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_Errata, Corrections, Notes, Updates, etc

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_Errata, Corrections, Notes, Updates, etc New Files

_!!!! ATTENTION - CORRECTIONS, NOTES AND UPDATES - READ THIS FILE !!!!!

ATTENTION

If you are thinking of building any circuits from this site, before commencing, you need to look in the directory

"Errata, Notes, Updates, etc"

in order to see if there have been any corrections, notes or updates issued for the particular document. "Errata" means errors found. A more literary version of the term "Corrections".

As much as possible the files in this directory are named the same as the original article. Plus there will be the initials of the original document and the date of the article where it applies. In the case of a multi part series, the date will will refer to the date of Part 1 in most cases. 

A quick check there can save you a lot of time needlessly chasing down an error. 

The site manager cannot guarantee that all corrections, notes and updates have been found for each  file. Due to the random nature of discovery of old documents it is not possible that all such files have been found as the corrections, notes and updates are usually published until some time later. Usually monthe later. Sometimes years. 

As these circuits and articles are meant to be educational to assist in the design of new circuits, the operation of any circuit is not guaranteed. The same applies to maunals and schematics of commercial products. 

CHECK BEFORE YOU BUILD!

_Alphabetical Listing

10 Function Digital Clock Errata RE 1977-08.pdf
100W Inverter Errata EFY 1983-01.pdf
100W Power Amplifier Module Schematics & Application Notes.pdf
12-230V Inverter Update EA 1979-02.pdf
130 Receiver Errata EA 1972-04.jpg
1987-12 Macrovision Scrubber Errata RE 1987-12.pdf
1GHz Digital Frequency Meter Update ETI 140 1978-03.pdf
25W Stereo Booster Errata EA 1979-01.pdf
2650 Keyboard Errata.pdf
3 Input Mixer Notes EA 1972-06.jpg
3 Way Active Crossover Errata SC 2003-01.pdf
3.5MHz Solid STate Transmitter Errata EA 1976-09.jpg
300W Amp ETI-466 Notes ETI 1981-12.pdf
3W USB Stereo Audio Amplifier Errata EFY 2014-10.pdf
3X3 Alarm Errata PE 1991-02.pdf
4 Toys for the Holiday Season Errata.pdf
500 MHZ DFM Update EA1981-12.pdf
6 Digit Clock Errata EA 1979-03.pdf
60W Amp Module Notes ETI 1979.pdf
A Switch Multiplier Errata ME 1989-02.pdf
A-D Temperature Converter Errata.pdf
AC Outlet Checker Errata RE 1980-05.pdf
AC Regulator for Enlargers errata EA 1972-02.pdf
AC to DC Conversion Errata ME 1986-05.pdf
AC to DC Conversion Program Errata ME 1986-05.pdf
Acoustic Phase Notes.pdf
Active Antenna Errata 73 1993-03.pdf
Active Antennas Errata RE 1983-03.pdf
Active Subwooker Errata EK India 1986-05.pdf
Add Daytime Running Lights to your Car Errata EN 1998-10.pdf
Alarm Systems for the Home Class Notes - 1993.pdf
All About Calibration Errata RE 1988-06.pdf
Alpha Meditation Goggle Errata RE 1989-04.pdf
Alpha Meditation Goggle Errata.pdf
Alternator Regulator Update WW 1978-08.pdf
AM Broadcast Band Loop Antenna Errata ME 1987-09.pdf
AM Transmitter Errata EFY 1979-08.pdf
Answer Mate Errata ME 1988.pdf
Application Notes-Analog Optical Isolators.pdf
Arduino Based Gesture Controlled Robot Errata EFY 2015-07.pdf
Assistive Device for the Speech Impaired Errata EFT 2015-10.pdf
Audible Amplifier Distortion Notes WW 1978-01.pdf
Audible Amplifier Distortion Notes WW 1978-02.pdf
Audible Target Errata ME 1987-09 (2).pdf
Audible Target Errata ME 1987-09.pdf
Audio Delay Line Systems Part 4 Errata EAB 1997-04.pdf
Audio Equipment Repair Notes.PDF
Audio Panner Errata ME 1988-04.pdf
Audio Power Amplifier Design Notes.pdf
Audio Power Level Meter Errata.pdf
Audio Power Meter Errata PE 1979-10.pdf
Audio Power Meter Errata.pdf
Audio Signal Restoration Unit Errata.pdf
Audio Solid State Switching Notes.pdf
Audio Switch Notes.mht
Audio-Video Distribution Amplifier Errata ME 1987-03.pdf
Auto Dipper and Automatic Mast Light Switch Errata EFY 1985-09.pdf
Auto Lights Warning Buzzer Errata PE 1975-03.pdf
Auto Polarity DMM Errata PE 1974-12.pdf
Auto Rhythm Unit for Electronic Organs Errata EA 1976-10.jpg
Auto Rhythm Unit for Electronic Organs Errata EA 1976-11.jpg
Auto-Temp Notes HOE P84.pdf
Autochime Notes EA 1979-09.pdf
Autodim Errata EA 1971-07.pdf
Automatic Car Battery Charger Update EK 2008-07.pdf
Automatic Fan Control for Compact Cars Errata ME 1987-05.pdf
Automatic Hold Device Errata ME 1989-02.pdf
Automotive Alternator Notes.pdf
Bass Guitar Amp ETI 1410 Errata 1984-09.pdf
Battery backup for bike Errata EK 2005 12.pdf
Battery Butler Errata.pdf
Battery Charger Controller Errata ME 1987-11.pdf
Bed Vacancy Alarm System Errata EFY 2015-09.pdf
Better Bass for Electronic Organs Errata EA 1982-06.pdf
Bicycle Speedometer Errata PE 1977-03.pdf
Big Score Notes ME 1990-03.pdf
Binary Clock PE 1991-01 Notes.pdf
Bipolar Power Supply Errata RE 1986-05.pdf
Bipolar Train Controller Errata EA 1979-02.pdf
Boss DR-55 Service Notes.pdf
Brainwave Errata EN 1999-04.pdf
Build a Diode Temperature Probe Errata.pdf
Build an AM Transmitter Errata EN 1998-06.pdf
Build an Auto-Polarity, Auto Zero Digital Multimeter Errata.pdf
Build An Ion Meter Errata RE 1990 03.pdf
Build Charge Errata PE 1978-01.pdf
Built a Digital Camera Shutter Timer Errata.pdf
Calculator Music Errata ME 1898-03.pdf
Calculator Stopwatch Adapter Errata.pdf
Calculator Stopwatch Errata.pdf
Capacitor Esr Tester Errata PE.gif
Capacitors Types, Specs, notes on Use Capacitors A Field Guide to Types and Habitats - by Harry R_ Bissell Jr.mht
Car Alarm Update EA 1984-05.pdf
Car Alarm Update for ETI 184 project.pdf
Car Burglar Alarm Errata EA 1976-11.pdf
Car Thief Chaser Errata ME 1986-10.pdf
CFL-Flouro Driver Errata SC 2004-09.pdf
Choosing Op Amps for Specific Applications Errata ME 1987-11.pdf
Circuit Design from Scratch Errata ME 1984-11.pdf
Circular Insert Generator Errata.pdf
Class-D Amplifier Class Notes.pdf
CMOS FSK Modulator Errata EK Summer 1978.pdf
CoCo Test Lab Errata ME 1986-03.pdf
Coil Clinic Notes EK 2007-06.pdf
Commercial Editor Errata RE 1982 12.jpg
Comparative Study of Computer Languages Errata EFY 1986-02.pdf
Compressor Guard Errata.pdf
Computer Aided Logic Design Errata C&E 1983-05.pdf
Computer Control for Ramsey FTR-146 Errata 73 1993-03.pdf
Computer Control For The Ramsey FTR-146 Errata 73 1993-05.pdf
Computer Controlled Robotic Arm Errata ME 1988-10.pdf
Computer-Controlled AC Interface Errata ME 1990-11.pdf
Continuously variable turnover preamplifier Errata AU 1951-01.pdf
Control Centre for Amateurs Errata EA 1972-08.pdf
Controlling DC power with Pulse Width Modulation Errata.pdf
Controlling DC Power with Pulse Width Modulation ErrataPS 1979-06.pdf
Convert a Four Banger for Stopwatch Functions Errata.pdf
COSMAC Elf Errata 1976-08.pdf
Cosmac Elf Notes.pdf
Crossover Networks Errata EFY 1986-03.pdf
Cruisealert Errata PE 1979-02.pdf
Crystal Radio Errata ETI Hobby Electronics Project Book 1982.pdf
Current Clamp Adapter Notes SC 2003-09.pdf
Current Clamp Adapters for DMMs Errata SC 2003-09.pdf
Curve Tracer Errata PE 1976-03.pdf
Damn Fast Ni-Cad Charger ETI Project 274 Errata 1984-02.pdf
Databus Buffer Errata EK 1978-10.pdf
Daytime Running Lights 1988-10 Errata.pdf
Daytime Running Lights for your car errata EN 1998-10.pdf
DC Machines - Class Notes.pdf
Delayed Trigger Accessory for Oscilloscopes Errata ME 1988-01.pdf
Delta-Graph Octave-Band Equalizer Errata PE 1975-09.pdf
Deltahet Mark 2 Errata EA 1971-04.jpg
Design a 100A active load to test power supplies Notes EDN 2011-09-22.pdf
Design and Use of Mixing Networks Errata.pdf
Designing a Transistorized Preamp Errata Au 1961-01.pdf
DI Box Errata SC 2006-05.pdf
Digi Designer Errata.pdf
Digi-Compass Update.txt
DigiButler Notes EK 2008-05.pdf
DigiStart Lock Errata PE 1977-04.pdf
Digital 100W Audio Amplifier Notes ME 1986-12.pdf
Digital Alarm Clock Notes WW 1976-11.pdf
Digital Amplifier Update ME 1986-12.pdf
Digital Audio Oscillator Notes SC 2009-02.pdf
Digital Audio Signal Generator Errata SC 2010-03-05.pdf
Digital Barometer Errata ME 1989-01.pdf
Digital Clock Errata RE 1980-02.pdf
Digital Clock Notes EFY 1985-05.pdf
Digital Frequency Readout Errata PE 1977-02.pdf
Digital Humidity Controller Errata ME 1985-01.pdf
Digital Inspector Errata EK2007-09.pdf
Digital Measuring System Errata ME 1986-08.pdf
Digital Reverb Errata EK 1978-05.pdf
Digital Sinewave Generator Errata - Oct 1991.pdf
Digital Stereo Amplifier Errata ME 1987-12.pdf
Digital Stopwatch Errata PE 1976-02.pdf
DIgital Tachometer Notes RE 1987-06.pdf
Digital Thermometer Notes RE 1982-02.pdf
Digital Thermometer [1982] Errata.pdf
Digital-Analog Storage CRO Adapter Update EA 1980-11.pdf
Discover the Hidden World of FM Broadcasting Errata ME 1985-15.pdf
Display ETI Project 412 Errata 1983-10.pdf
Distortion in Low Noise Amplifiers Notes WW 1977-08.pdf
DMM Add On Errata RE 1992 10.pdf
Dr Video Negative Supply Notes SC 2002-02.pdf
Driveway Sentry Coil Notes SC 2010-03.pdf
Dual Video Amplifier Errata ME 1986-08.pdf
Dual- Application Telephone Security System Part 2 Errata  ME 1990-7.pdf
Dual-Polarity Power Supply Errata ME 1990-03.pdf
EA 160 Receiver Errata EA 1970-12.pdf
ECO-3 Electronic Crossover Notes.pdf
Economical Time Mark Generator Notes WW 1977-11.pdf
Economy Autopilot Design Notes.pdf
Effective Anti Burglary System Errata PE 1982-06.pdf
Egg Timer Errata ME 1978-02.pdf
EHT Probe Notes SC 2010-04.pdf
Electronic Compass Errata.pdf
Electronic Dice Notes EFY 1984-06.jpg
Electronic Door Lock Using Arduino Errata EFY 2015-07.pdf
Electronic Fuel Gauge from Electronics Now Errata.pdf
Electronic Keyer Update EA 1978-04.pdf
Electronic Knighthood Errata RE 1988-04.pdf
Electronic Music Box Update EA 1980-12.pdf
Electronic Organ Tuning Notes Audio 1961-12.pdf
Electronic Pedometer Errata - August 1979.pdf
Electronic Transformers Revealed and Explained Notes EK 2008-12.pdf
Electronic Tuning Fork Notes ETI 1985-06.pdf
Electronic Voltage Regulator for your car errata 1978-07.pdf
Electronic Water descalers-softeners notes EAB 1997-04.pdf
Electronic Wattmeter Errata EA 1983-07.pdf
Electronics Notebook Errata ME 1985-10.pdf
Emergency Electronic Ignition Errata ME 1988-10.pdf
Energy Miser Errata RE 1982-08.pdf
Energy Miser Errata RE 1982-10.pdf
Enhance TV Sound with Stereo Errata PE 1982-05.pdf
EPROM Promarrmer for C64 Errata ME 1986-11.pdf
ESR C Meter Errata EK 2005 12.pdf
Estimating Noise in Op Amp Stages Errata EA 1987-04.pdf
Ethermeter Errata EK 2007-03.pdf
ETI Project 662B Errata ETI 1984-04.pdf
ETI Project 677B Errata ETI 1985-01.pdf
ETI162 Power Supply update from 1982-12.pdf
Expanding the Elf 2 Errata.pdf
Expanding the ELF II Errata.pdf
Experimenter's Corner Errata PE 1978-07.pdf
Experimenter's Power Supply Errata 73 1993-05.pdf
Experimenting with Light Beam Communications Errata.pdf
Experimenting With PLLs Errata 1975-10.pdf
Experiments in Phase Audibility Notes WW 1977-10.pdf
Fan Delay Timer for Air Conditioners Notes ME 1986-07.pdf
Fax Mate Facts Errata RE 1989 10.pdf
FET Audio Amplifier Errata EK Summer 1978.pdf
Floppy Disk Drive Tester Errata ME 1987-10.pdf
Flourescent Camping Light Errata - Practical Electronics1968-03.pdf
Flourescent Light Starter Notes EA 1982-10.pdf
Flux Gate Compass Design Notes.pdf
FM Signal Generator Errata EFY 1985-8.pdf
FM Transceiver Notes WW 1977-11-12.pdf
FM Wirreless Microphone Errata ME 1988-01.pdf
Fraser Electronics R2-R2A Dimming Light Controller Full Notes.pdf
Fraser Electronics R3A & R7 Light Controller Prototype Notes.pdf
Frequency Counter Errata ME 1989-08.pdf
From Not Working to Networking Errata EN 1992-08.pdf
Fuel Miser Errata ME 1984-10.pdf
Fuel Miser Notes PE 1993-05.pdf
Full Range Speaker System Notes ME 1987-01.pdf
Function Generator Errata 73 1992-01.pdf
Function Generator Notes RE1988-05.pdf
Fuzz Box Errata.pdf
GaAsFET Preamp Sequencer Errata 73 1992-03.pdf
Geiger Counter Errata EK 2006-07.pdf
General Purpose Speech Synthesizer Errata 2 ME 1987-10.pdf
General Purpose Speech Synthesizer Errata ME 1987-10 (2).pdf
General Purpose Speech Synthesizer Errata ME 1987-10 (3).pdf
General Purpose Speech Synthesizer Errata ME 1987-10.pdf
Getting to Know LCDs Errata PE 1975-04.pdf
Giant Size Scoreboard Errata PE 1975-08.pdf
Graphic Equaliser Errata EFY 1983-01.pdf
Graphic Equalizer Errata EFY 1983-01.pdf
GSM Based Messaging Using Arduino Errata EFY 2016-06.pdf
Guitar Practice Oscillator Errata EFY 1978 Annual.pdf
Headlight Modulator Notes PE 1981-06.pdf
Heart Rate Monitor Notes - EA 1983.pdf
Heatsinking Notes.pdf
Hex-ASCII-Decimal Conversion Errata C&E 1983-10.pdf
HF Op Amp Errata ME 1986-06.pdf
HF Transceiver Errata EQ 1985-10.pdf
Hidden World of FM Broadcasting Errata ME 1985-12.pdf
High Frequency Differentiators Update WW 1978-08.pdf
High Performance Train Controller Errata EA 1978-10.pdf
High Performance Train Controller Errata EA1978-10.pdf
High Power Audio Amplifier Errata RE 1984-12.pdf
High Quality Dual Channel Amplifier Errata Audio 1956-01.pdf
High Voltage Power Supply Errata EA 1971-09.pdf
High-End Power Amp Notes EK 2005-03.pdf
High-voltage Regulator for Valve Amps T-Reg Update EK 2009-03.pdf
Hijack Alarm Update.jpg
Hobby Corner Sept 1977 Errata.pdf
Home Brew Phono Pre-Amp Design Errata.pdf
Home Temperature Controller Errata EAB 1997-04.pdf
Hourly Chime Errata EFY 1985-05.pdf
Hourly Chime for Digital Clock Errata EFY 1985-05.pdf
How To Design Ultra Long Delay Timers Errata ME 1987-01.pdf
How to Design Your Own Speakers Errata PE 1991-03.pdf
How to Make Kirlian Photographs Notes RE 1986-05.pdf
How to Use Transconductance Operational Amplifiers Errata.pdf
Ibm Brand Monitor Repair Notes.pdf
Importance of Power-Handling Capacity Errata PE 1979-03, The.pdf
Improved Stereo Amp Errata EFY 1977-07.pdf
Improved Version of Parlour Game Errata EA 1969-08 P109.pdf
Indicator for Weller Soldering Stations Update EK 2008-07.pdf
Inexpensive Multitester Errata EFY 1985-12.pdf
Inexpensive Wireless Headphones Errata ME 1987-02.pdf
Insulation Meter Notes SC 2009-10.pdf
Introdudtion to Thyristors Errata ME 1987-04.pdf
Intruder Alarm Errata EFY 1978 Annual.pdf
Ion Meter Errata RE 1990-03.pdf
IR Remote Extender Errata 1989 05.pdf
Javascript Based Canvas Pendulum Clock Notes EFY 2015-02.pdf
Laser Experiments Errata.pdf
LDO Regulators Errata EK 2007 2.pdf
Learning 16 Bit Microcomputer Technology Part 3 Errata PE 1983-05.pdf
Learning Electronic Theory with Hand Calculators Errata PE 1976-07.pdf
LED Chaser Errata ETI 1980-12.pdf
LED Control Circuit Fault Indicator Errata EFY 1983-01.pdf
LED Driver Errata SC 2004-04.pdf
LED Racing Game Errata PE 1977-03.pdf
LED Torch Notes SC 2000-12.pdf
Lightning Detector Notes SC 2011-12.pdf
Limiting Engine RPM errata.pdf
Linsley-Hood Class A Power Amp Update.pdf
Linsley-Hood Class-A Update.pdf
Little Leakage Detector Errata RE 1986-05.pdf
LM Frequency Meter Errata 73 1971-05.pdf
LM49710 Based Audio Amplifier Errata EFY 2016-06.pdf
LM723 Derived power supply Errata ETI 1972-11.pdf
Logic Analyzer Errata EN 1998-03.pdf
Logic Design - 04 Notes WW 1977-05.pdf
Logic Notes.pdf
Low Cost Function Generator Errata ME 1988-01.pdf
Low Cost Function Generator Notes ME 1988-01.pdf
Low Cost Stereo System Errata EA 1972-01 (2).pdf
Low Cost Stereo System Errata EA 1972-01.pdf
Low Cost Temperature Probe Errata EA 1988-01.jpg
Low Cost Transistor-FET-Zaner Tester Notes EA 1988-02.jpg
Low Distortion Oscillator Errata EA 1987-11.pdf
Low Distortion Oscillator Notes EA 1986-12 1987-01.pdf
Low Frequency Filter Errata.pdf
Low Frequency Muscle Stimulaor Errata EFY 2015-07.pdf
Low Noise Preamplifier Notes EA 1971-09.pdf
LTC3406 Design Notes.pdf
Magnetometer Update Article.pdf
Manual AC Mains Regulator Errata EFY 1979-07.pdf
Maplin Magazine Issues 1-4 from1982 Errata.pdf
Marine Speedometer Errata PRE 1975-02.pdf
Master Tone Generator Errata EK 1978-09.pdf
Masthead Amplifier Update EA 1979-08.pdf
Matchbox Capacitor Tester Errata EFY 2014-10.pdf
Matinee Organ Update Maplin 1981-2.pdf
Matinee Organ Update Maplin Magazine.pdf
Metal Detector Notes ETI-1500 ETI 1980-12.pdf
Metronome Errata EFY 1979-09.pdf
MICRO CONTROLLER PRINTED CIRCUIT BOARD DESIGN NOTES.pdf
Microprocessor Control With Basic Errata ME 1989-04.pdf
Microprocessor Microcourse Part 2 Errata PE 1978-04.pdf
Midi DMX Circuit Errata EK 2001-09.pdf
Milliohm Adapter Errata SC 2010-02.pdf
Mini Preamplifier Errata EK 2009-10.pdf
Miniature LED Beacon Errata ME 1988-02.pdf
Mobile CB Power Supply Errata PE 1975-04.pdf
Mobile Ham Repeater Errata 73 2002-09.pdf
Mobius Circuit Errata EN 1988-11.pdf
Morse A Word Errata PE 1979-03.pdf
Movie Mixer Errata EA 1978-09.pdf
Movie Mixer Errata EA1978-09.pdf
MP3 Preamp Errata EK 2007 02.pdf
Mugen Hybrid Amplifier Errata EK2007-10.pdf
Multi Colour Flashing LED Errata EK 2006-07.pdf
Multi-Voltage Power Supply Errata ME 1985-05.pdf
Multiple Choice Digital Multimeter Errata 1979-02.pdf
Multiple Choice Digital Multimeter Errata.pdf
Multiprogrammer on USB Errata EK 2001-06.pdf
Muscle Feedback Monitor Errata PE 1975-05.pdf
Music Box Peripheral Add On For Random Notes from PE 1978-04.pdf
Music Synthesizer ICs Errata RE 1983 5.pdf
Music Synthesizer ICs Errata.pdf
Musical Instrument Phase Shifter Errata ME 1988-10.pdf
Negative Ion Generator Notes RE 1981-07.pdf
Negistor Errata PE 1975-12.png
New Life For Old Car Radios Errata RE 1987-06.pdf
New_Files_-_Alphabetical 2023-12-15 1000+ FIle Update.txt
Ni-Cd Battery Charger Update ETI519.pdf
No Keyboard Project Notes SC 2002-02.pdf
Noise Remover Errata 73 1992-11.pdf
Notes From An Inexperienced Chili Taster Named Frank.mht
Notes on reading Elektor schematics.pdf
Notes On Vga To Rgb Conversion.txt
Notes On Winding Coils For A Flux Gate Compass Based On The Cetrek 577 Compass.pdf
Notes_on_VGA_to_RGB_conversion.txt
NRZ Recording Errata EA 1977-04.pdf
O'Brien's Article Errata AU 1951-11.pdf
Op-Amp Power Supply 251 Errata ETI 1985-08.pdf
Optical Triangulation Errata EK 2009-02.pdf
Opto Coupled Magnet Driver Errata EA 1979-06.pdf
Orion Errata PRE 1975.02.pdf
Over-Current Protection Notes EFY 1984-07.pdf
PA Amplifier Errata EA 1970-12.jpg
PA Amplifier Errata EA 1970-12.pdf
Packet Mac Modem Errata 73 1992-10.pdf
PacketMac Modem Errata 73 1992-10.pdf
Parallel Port PIC Programmer Notes SC 2001-03.pdf
PaX Amplifier Stability Notes EK 2008-04.pdf
PC IR Port Transceiver Notes SC 2001-12.pdf
PC Volume Control Errata ME 1989-08.pdf
Performance Electronics For Cars - Digital Fuel Adjuster Notes SC 2009-12.pdf
Peripheral Driver Errata EFY 2014-12.pdf
Personal Intrusion Detector Errata ME 1989-01.pdf
Personal Microwave Communications System Notes PE 1978-10.pdf
PFC Notes.pdf
PGA Prototyping Board Errata EK 2006-03.pdf
Phone Line 'Busy' Indicator Errata ME 1988-10.pdf
Phono Splitter Errata EK 2006-0708.pdf
Photoflash Slave Unit Notes PrE 1967-03.pdf
Pianomatic Errata RE 1983-10.pdf
Pink Ticket Beater Errata ME 1978-02.pdf
Playmaster 118 Stereo Amplifier Errata EA 1967-07.pdf
Playmaster 125 Guitar Amplifier Errata EA 1969-07.pdf
Playmaster 129 Errata EA 19702-10.pdf
Playmaster 131 IC Tuner Errata EA 1971-02.pdf
Playmaster 131 Tuner Errata EA 1971-01.jpg
Playmaster 132 Amplifier Errata EA 1971-06.pdf
Playmaster 135 PA Amplifier Errata EA 1972-09.pdf
Playmaster 300W Amplifier Errata from EA1980-06.pdf
Playmaster 300W Loudspeaker Protection Notes EA 1980-05.pdf
Playmaster 60-60 Amplifier Notes EA 1986-05.jpg
Playmaster 60-60 Amplifier Notes from EA.pdf
Playmaster Guitar Amplifier Vibrato Errata EA 1971.pdf
Playmaster MOSFET Amplifier Notes EA.pdf
Playmaster Series 200 MOSFET Amplifier Errata EA 1985-01 to 1985-05.jpg
Pocket Calibrator Notes RE.pdf
Pocket Stereo Amp Errata EN 1992-08.pdf
Pools-Lotto Selector Update EA 1981-07.pdf
Poorman's Servant Errata PE 1979-07.pdf
Portable Gas Detector Errata ME 1985-07.pdf
Portmaster Home Automation System Errata PE 1991-02.pdf
Power Amplifier Bridging Notes ETI480.pdf
Power Amplifier Design Notes-Misc.pdf
Power Controller Update from Radio Electronics 1992-11.pdf
Power Down Timer ETI-265 Notes.pdf
Power Failure Detector Notes ME 1978-03.pdf
Power Monitor Errata ETI 1981-03.pdf
Power On-Off IR Remote Control Errata ME 1990-10.pdf
Power Supply Active Load Notes.PDF
Power Supply for IC Experimenting Notes ME 1991-01.pdf
Power Transformer Program Notes EFY 1986-03.pdf
Powered Speaker Notes RE 1988-09.pdf
Powerline Transient Suppressor Notes 1983-09.pdf
Practical Printed Circuit Boards Errata ME 1989-10.pdf
Practical Transistor Circuits Errata - Practical Electronics1968-04.pdf
Profiler Errata EK 2007-1.pdf
Profiler Milling Machine Updates.pdf
Programmable Appliance Timer Errata ME 1989-02.pdf
Programmable Frequency Audio Generator Update 73 1993-01.pdf
Programmable Logic Part 1 Errata ServO 2006 1.pdf
Programmable Ni-Cd Recycler Errata ME 1986-10.pdf
Programmable Power Supply with TL431 Errata EFY 2016-06.pdf
Programmable Volume Control Errata EFY 1985-11 (2).pdf
Programmable Volume Control Errata EFY 1985-11 (3).pdf
Programmable Volume Control Errata EFY 1985-11.pdf
Programmer for PICs Errata SC 2008-05.pdf
Propagation Delay-The Logic Gremlin Errata.pdf
Proportional Termperature Controller Errata ME 1987-10.pdf
Prospector Metal Locator Notes EA 1979-11.pdf
Pseudo CW Filter Errata 73 1991-06.pdf
Put Your Telephone On Hold Errata ME 1989-05.pdf
Pyrometers Without Tears Errata EA 1987-10.pdf
Quag-V Antenna Errata 73 1991-12.pdf
Radar Burglar Alarm Update EA 1977-07.pdf
Radar Detector Notes RE 1890-05.pdf
Radar Detector Notes RE 1981-09.pdf
Radiation Counter Errata PrE 1967-03.pdf
Radio Controlled Doorbell Errata ME 1987-02.pdf
Radio Shack CTS256A-AL2 Speech Processor Errata ME 1987-10.pdf
Rapid Attenuator Calculations Using the Vector Slide Rule Errata Audio 1950-12.pdf
Rapid Fire Errata HOE 1988-09.pdf
RASER HF Dipole Antenna Update.pdf
RC Aircraft Crash Saver Errata ME 1987-12.pdf
Reactions In Aqueous Solutions Class Notes.pdf
Regenerative Receiver Errata.pdf
Relax with a Brain Wave Synchronizer Notes EN 1999-04.pdf
Remote Switch For Car Alarm Errata SC 1988-03.pdf
Repair Notes on Cassette Recorders.pdf
Resistive RF Attenuator Errata 73 1994-07.pdf
Retriggerable Monostable Errata RE 1989-06.pdf
Rewinding Transformers Notes RE 1983-05.pdf
RF Circuit Design  2 Errata EK India 1986-04.pdf
RF Sniffer Errata HOE 88-08.pdf
RF Wattmeter Errata EK 2002 10.pdf
RFI Free Solid State Thermostat Errata.pdf
Ring Flash Errata Elektor 2008-02.pdf
Ring the Bell and Win a prize Game Errata EK 1978-11.pdf
Roland AP-7 Jet Phaser Service Notes.pdf
Roland CSQ-100 Digital Sequencer Service Notes.pdf
Roland D-110 Multi Timbral Sound Module - Reverb SERVICE_NOTES.pdf
Roland DPX-3300 Drafting Plotter Service Notes.pdf
Roland JX-8P PG-800 Keyboard Service Notes.pdf
Roland JX8P?PG800 Service Notes (1-6)_text.pdf
Roland JX8P?PG800 Service Notes (11-17)_text.pdf
Roland JX8P?PG800 Service Notes (7-8)_text.pdf
Roland MC-303 Groovebox Service Notes.pdf
Roland MC-505 Groovebox Service Notes.pdf
Roland RA-50 Real Time Arranger Service Notes.pdf
Roland SH101 Synthesizer Service Notes.pdf
Roland TD-12 Percussion Sound Module Service Notes.pdf
Roland TD-6V Percussion Sound Module Service Notes.pdf
Roland TR-808 Rhythm Composer Service Notes.pdf
Roland TR-909 Rhythm Composer Service Notes.pdf
Roland V-8 Video Mixer Service Notes.pdf
RS-232C Breakout Box Errata ME 1986-08.pdf
RS232-Current Converter Errata SC 2009-04.pdf
Rudder Reference Design Notes.pdf
Safe-T-Plug Errata EA 1972-09.pdf
Santa Claus Machine Updates.pdf
Satellite Set Top Box Stereo Synthrsizer Errata.pdf
Satellite TV Descrambler Errata.pdf
Sawtooth Generator Notes EFY 1984-04.pdf
SC Analyser Errata EK 2005 04.pdf
SCA Receiver Errata RE 1987-08.pdf
Screecher Car Alarm Notes EA 1986-08.pdf
Screen Printing Techniques for the Electronics Industry Errata EFY 1979-01.pdf
Selectacall Errata ETI-723 1982-02.pdf
Selectacall ETI-723 ETI 1982-02 Errata.pdf
Selectalott errata EA 1981.pdf
Sentry Strobe Alert System Errata PE 1991-02.pdf
Series 5000 Preamp ETI 1981-10 notes.pdf
Severe Weather Warning Alerter Errata.pdf
Shorted Turns Tester Errata EA 1972-07.jpg
Shortwave Capture Errata EK 2006-12.pdf
Should Hi-Fi Amplifiers be Grounded Notes EA 1988-02.pdf
Simple DC Power Supply Errata SC 2004-03.pdf
Simple Laser Power Supply Errata PE 1991-09.pdf
Simple Rechargeable AA Cell Characteriser Errata EK 2006-04.pdf
Simple Sitar Errata PRE 1967-03.pdf
Simple Solar Charger Errata EK 2007-04.pdf
Single Channel Triac Board Notes.pdf
Single Tone Paging for Wilson HTs Errata 73 1980-12.pdf
Six Bit DAC with 10 Bit Precision Errata ETI 1982-02.pdf
Slave Flash Errata EK 2005 07.pdf
Slide Syncer Notes PE 1976-11.pdf
Slot Loading Cassette Player Notes.pdf
Smart Probe Errata EN 1999-03.pdf
SMPS Controller Notes on the NE5561.pdf
Solar Cell Converter Errata ME 1986-08.pdf
Solid State Relay Update.JPG
Solid State Tesla Coil Errata HOE 1988-10.pdf
Sound Effects Errata - Practical Electronics1968-04.pdf
Space War Game Errata PE 1976-04.pdf
Space Wars Game Errata PE 1976-04.pdf
Speech Processor Errata HOE 1988-10.pdf
Speed Control for DC Motors Notes EFY 1986-03.pdf
Sputnik Time Machine Errata EK 2007-01.pdf
Stand Alone EPROM Programmer Notes ME 1987-03.pdf
State of the Art of Doing Nothing Errata.pdf
Step Attenuator Errata EN 1999-04.pdf
Stepping Motors Notes ME 1990-01.pdf
Stereo DAC Errata SC 2009-09-10.pdf
Stereo Digital-to-Analog Converter Errata SC 2009-09-11.pdf
Stereo Dynamic Noise FIlter Errata EZ 1976-01.jpg
Storm Warning Lightning Monitor Errata EN 1998-10.pdf
Storm Warning-Lightning Monitor 1998-10 Errata.pdf
Strobe Errata ETI574.pdf
Super Metal Detector ETI 1500 Errata.pdf
Super Simple Shortwave Receiver Errata.pdf
Surplus Meters Errata 73 1992-01.pdf
Switching Amp April 1996 Errata.pdf
Synchronous Motor Programmable Control Errata PE 1981-04.pdf
Synthesized Pulse Generator Errata RE 1980-10.pdf
Table Tennis Game Errata PE 1976-04.pdf
Tag Game Errata EK 1978-11.pdf
Tank Game Errata RE 1978-12.pdf
Techno Whizzy 1 Errata 73 1992-12.pdf
Telephone In Use Monitor Errata.pdf
Telephone Tester Errata ME 1988-10.pdf
Tempmaster MK2 Notes SC 2009-02.pdf
Tempo 2020 Restoration Notes.pdf
Testing Potentiometers Notes RE 1982 11.pdf
Texas Instruments-Stellaris-LM3S1110-Learning Centre MCU-Application Notes-Texas_Instruments.Application_Notes_7.pdf
The Flyback Converter Lecture Notes.pdf
The Lost Art of Regeneration Errata.pdf
The Versatile 555 Notes ME 1984-11.pdf
Thermally Machine Project Boxes Errata ME 1990-11.pdf
Three Element Bass Control Update Au 1953-10.pdf
Tips & Techniques Errata PE 1976-06.pdf
Tone Control Amplifier Notes from EA 1971-11.pdf
TOSLINK~SPDIF Converter Errata SC 2010-10.pdf
Toth Article Errata AU 1951-02.pdf
Traffic Lights Errata.ETI 1982-11.pdf
Traffic Signals Errata EFY 1982-08.pdf
Transistor Curve Tracer Errata EK 2009-02.pdf
Transistor Curve Tracer Errata PrE 1968-05.pdf
Transistor Test Set Errata EA 1968-08.pdf
Transistor Tips Errata Audio 1956-02.pdf
Trim Tab Position Sensor Notes.pdf
Troubleshooting With a dc Voltmeter Errata ME 1988-10.pdf
True RMS Adapter Errata ME 1985-08.pdf
True RMS Converter for your DMM Errata.pdf
TTL Circuit Design Notes.pdf
Tucker Tin SSB Transmitter Errata EA 1972-02 to 04.pdf
Tunable Aerial Amplifier Errata EK 1.pdf
Tune Up Tachometer Notes EA 1975-10.pdf
Turtle Robot Update ETI 1982-05.pdf
TV Adjustments Class Notes.pdf
TV Alignment Class Notes.pdf
TV Game  Errata EFY 1978 Annual.pdf
TV Surround Light Errata EK 2008-02.pdf
Two Meter Portable Quad Errata 73 1990-06.pdf
Two-Line Telephone Answering Machine Interface Errata ME 1990-02.pdf
UHF Converter Errata EA 1987-10.pdf
UHF Preamplifier Errata RS 1982-05.pdf
UHF Remote Controlled Key Errata EA 1987-01.pdf
Ultra Low Distortion Oscillator Notes EA 1987-11.pdf
Ultrasonic Burglar Alarm Errata EA 1987-04.pdf
Ultrasonic Radar Model Using ATmega128 Notes EFY 2015-02.pdf
Understanding Time Code Synchronization Notes DB 1990.pdf
Unicorn Robot Errata RE 1980-10.pdf
Universal Digital Probe Errata PE 1975-02.pdf
Update Your Digital Clock With Add Ons.pdf
Update Your Digital Clocks Errata PE 1795-02.pdf
Updated Operating Information for Registration Control Jig (TVP0305).pdf
Upgrading the ETI-668 EPROM Programmer Errata 1984-01.pdf
USB Data Acquisition Board Errata EK 2007-11.pdf
Using Op Amps to Generate Signals Errata ME 1987-05.pdf
Using Voltage Compators Errata ME 1985-05.pdf
Valve Phase Splitter Notes.pdf
VCR Modulator Errata ME 1989-04.pdf
Versatile 723 Errata ME 1987-02.pdf
Versatile Low-Cost Power Supply Errata EFY 2015-05.pdf
Versatile Ni-Cd Battery Charger Errata.pdf
Versatile Tester Simplified Further Update EFY 1986-01.pdf
Video Optical Isolator Errata EAB 1997-04.pdf
Video Pallette Video Effects Generator Errata RE 1988-02.pdf
Voice Operated Relay Errata EA 1987-10.pdf
Voltage & Continuity Checker Errata EA 1987-11.jpg
Voltage Regulator Errata RE 1983-07.pdf
Waddington DVM Errata.pdf
Water Descaler Notes EAB 1996 or 1997.pdf
Weather Satellite Receiver Errata SC 2003-12.pdf
Weather-Forecast Monitoring System Errata EFY 2014-10.pdf
What to do when the fuse blows Notes EA 1986-03.pdf
Whistle Filter Notes EA.pdf
Wimshurst Machine Notes PE 1990-12.pdf
Wireless Baby Monitor Errata EFY 2016-06.pdf
Wireless USB Errata EK 2007-03.pdf
_!!!! ATTENTION - CORRECTIONS, NOTES AND UPDATES - READ THIS FILE !!!!!.txt

Digi-Compass Update

Oct 28, 1989



ATTENTION DIGI-COMPASS BUILDERS:



DIGI-COMPASS Corrections/Update

Nov 89 Radio Electronics



Please make the following corrections to your Digi-Compass

Text:



Schematic, Pg 45:



      VCC (5.0V) should be shown at IC4 (LM7805) output

      and VDD (6.8V) should be shown at "C5+".  If con-

      nected as shown IC3 may be damaged.  



      VDD should be labeled "6.8V" and not "6.5V".  This

      voltage should be +/-.4V on your circuit for best

      operation.



      IC3, the TLC548, has pins 2 and 3 swapped.  Pin 2

      is "INP" and Pin 3 is "REF -".  Weird but harmless 

      operation will occur if connected as shown.



Text, Pg 51:



      The number of data acquisition averages is changed 

      by pushing the Greater-Than (>) or Less-Than (<) keys,

      not the Open or Closed Quote Keys.



Text, Pg 82:



      The standard command line syntax example for TEXTCOMP

      is misleading.  Spaces must be included between 

      arguments.  Therefore, the example should read:

                        TEXTCOMP LPTn 10







I understand that Radio Shack has dropped the TLC548 ADC IC 

used in my Digi-Compass project.  When I designed the inter-

face I deliberatly used this part because I wanted to use 

readily available IC's (did you know that every piece of 

hardware except the optocouplers came from Radio Shack?).

The project was designed in DEC '88 and Radio Shack had no 

plans to drop any of the parts at that time.



I suggest you try all of the Radio Shacks in your area to see

if the ADC is in their junk-box stock (part #276-1796).  If 

this route fails, I will supply the part for $6.95.  



Also, for those who do not want to download the software file

may purchase it from me for $6.00.  This may be cheaper than 

downloading the 100K file at 1200 baud from RE BBS.  It will

be supplied on a 360K PC data diskette.



Please follow this ordering procedure:



      Send check or money order only (CA Residents add TAX 6.5%) 

      plus $1.75 shipping and handling to -



                  Digital Products Company

                  Thomas E. Black

                  134 Windstar Circle

                  Folsom, Ca 95630



I will try to send your parts out within 48 hours via standard US

mail.  If the response is too tremendous this time may be much

longer.  If I run out of parts then I will return your payment 

as received.  This offer is subject to change and is for a short

time only.



If you have other Digi-Compass parts needs please write me!  I 

may be able to help.  Perhaps you lack software experience and

need some specialized code for your application.  For a reason-

able fee I may be able to supply custom software.  Please include

a Stamped and Self-Addressed Envelope with your correspondence.



Please avoid calling, but if you have to then expect any return

call to be collect (I'm a very small business with limited 

resources).  You will most likely have to leave a message on an

answering machine - expect a weekday return call around 7-8PM PST,

or much earlier if on the weekends.



Believe me, this project is worth the frustration!  It works well

and has unlimited applications.  Please write if you have any

software or applications to share.

                                       

New_Files_-_Alphabetical 2023-12-15 1000+ FIle Update

0-18 MHz Receiver.pdf
1.3-22V Adjustable Regulator.pdf
10-kHz VFC uses charge-pump variation.pdf
100 Amplifiers Part 1.pdf
100 amplifiers part 2.pdf
100W Inverter Errata EFY 1983-01.pdf
101 Spy Gadgets For The Evil Genius.pdf
110 Op-Amp Projects.pdf
110V Detector.pdf
12V AC Dimmer.pdf
13.8V 25A Regulated Power Supply.pdf
150W 1MHz Resonant Converter Design Review.pdf
16 Channel UHF Remote Control Part 2 EA 1988-12.pdf
1GHz Digital Frequency Meter Update ETI 140 1978-03.pdf
2 AA Cells Replace 9V Battery to Extend Operating Life.pdf
2 Way CW Trainer.pdf
200kHz 15W PUSH PULL DC-DC CONVERTER.pdf
20W per Ch Stereo Amplifier.pdf
22 Radio and Receiver Projects for the Evil Genius.pdf
25-kV generator tests insulation.pdf
3 LED Logic Probe.pdf
3.3V converter delivers 3W from Li-ion battery.pdf
30 Solderless Breadboard Projects Book 1.pdf
3D CAD modelling for beginners.pdf
3V Operation of Op Amps.pdf
4 Cell Ni-Cd Cell Charger-Regulator.pdf
400V 50W DC-DC Inverter.pdf
556 Dual Timer Applications.pdf
5V from single cell battery.pdf
5V High Current Step-Down Switch.pdf
6 Digit Clock Errata EA 1979-03.pdf
60-Hz modulator records process variables.pdf
650MHz Amplifying Prescaler Probe.pdf
7x5 LED Matrix Using Arduino.zip
8 Bit Logic Analyzer.pdf
8 Bit Synths with Arduino.pdf
807 Amplifiers.pdf
A Higher Note Control for the Nostalgic Tube Sound Circuit.pdf
A New Approach to Loudspeaker Dampening.pdf
A new distortion measurement.pdf
A Practical Gain Set.pdf
A simple 6m beam.pdf
A simple desk microphone.pdf
A TRANSISTOR FOR 100 kHz CONVERTERS.pdf
About Electronic Transformers.pdf
AC & DC Lamp Dimming.pdf
AC Circuit Breaker.pdf
AC Line Carrier Modems.pdf
Accurate Sine Waves.pdf
Acoustic Distress Beacon.pdf
Acoustic Finder for Model Aircraft.pdf
Acoustical Balance in Recording.pdf
Acoustical Matching of Sound Systems & Auditoriums.pdf
Active-filtering circuit for audio DACs 2019.pdf
Adapting Electronic Keyers to Older Transmitters.pdf
Add Arduino power to your projects.pdf
Add More Speakers.pdf
Add-on Oscilloscope Waveform Store Part 2 WW 1978-11.pdf
Adding an automatic shutoff to an alarm system.pdf
Adjustable Electronic Load for Power Supply Testing.pdf
Adjustable Voltage Power Supply Using LM317.pdf
akai-service-manuals.zip
All About Capacitors Part 2 EFY 1984-10.pdf
All Purpose Amateur Radio Metering Circuit.pdf
Allied 2600 AM-FM Radio.pdf
Allied 2691 AM-FM Radio.pdf
Alternating LED blinker uses four parts.pdf
Alternator Noise Information.pdf
Alternator Regultor Update WW 1978-08.pdf
AM Radio Power Amplifier - Abt 1W.pdf
AM Transmitter Errata EFY 1979-08.pdf
Amateur Radio Applications for an Active Filter.pdf
Amateur Radio Assorted Circuits.pdf
Amateur Sound Film Equipment 1958.pdf
Amplifier and Pre-Amplifier Assortment.pdf
An Artificial Reverberation System.pdf
An audio booster for yourhandheld.pdf
An Improved Loudness Control.pdf
An In-Circuit Transistor Tester.pdf
An Infrared Detector.pdf
Analog Frequency Meter.pdf
Analogue Frequency Meter.pdf
Android Based RC Charging and Discharging.zip
ANE015 Inrush current for connectors.pdf
ANP062 LC Filter Design with MLCCs.pdf
ANP071 Aluminum Electrolyticvs.Aluminum Polymer Capacitor and how its benefits are used properly.pdf
ANP109 Impedance Spectra of Different Capacitor Technologies.pdf
Antennas Basic Theory.pdf
Antique Radio Replacement drive belts made easy.pdf
Appliance Off Reminder.pdf
Arduino based gesture controlled robot code.rar
Arduino Based Gesture-Controlled Robot.pdf
Arduino Piggyback on Raspberry Pi.pdf
ARP Sequencer 1601 Service Manual.pdf
Art + DIY Electroniics.pdf
Assembling Coax Plugs.pdf
Assorted A-D Converters.pdf
Assorted Alarm, Sensor and Triggerring Circuits.pdf
Atari Video Game Controller.pdf
Attenuation vs Frequency of Single Constant K Section Low or High Pass FIlters.pdf
Audible Tuning Aid for Blind Hams.pdf
Audio Amplifier and Pre-Amplifier Assortment.pdf
Audio Demonstration Technoques.pdf
Audio Frequency-Response Measurements in Broadcasting.pdf
Audio Impedance Meter Part 2 EA 1979-01.pdf
Audio Induction Coil.pdf
Audio prediction from 1956 that came true.pdf
Audio Processing Circuit Assortment.pdf
Audio Source Enhancer.pdf
Audio Switch that is TTL Logic compatible.pdf
Audio Test Accessory isolates and matches loads.pdf
Audio Test Generator.pdf
Audio-Visual Continuity Tester.pdf
Audio_Precision--System_One_SYS-11--service--ID9312.pdf
Audio_Precision--System_One_SYS-20--service--ID9312.pdf
Audio_Precision--System_One_SYS-22--service--ID9312.pdf
Audio_Precision--System_One_SYS-302--service--ID9312.pdf
Australian Economy Five AM Radio Receiver.pdf
Auto Battery Tester.pdf
Auto-Polarity Circuit.pdf
Automatic Battery Charger-Maintainer Owners Manual.pdf
Automatic Bicycle Light.pdf
Automatic Curtain Opener.pdf
AUTOMATIC LINE VOLTAGE SWITCHING CIRCUIT.pdf
Automatic Mast Light Switch and an Auto Dipper for Cars.pdf
Automotive Circuit Assortment mainly for classic cars.pdf
Automotive Voltage Indicator.pdf
Auxiliary circuits for high-performance audio 2019.pdf
Avoiding Passive Component Pitfalls.pdf
AWA R7077 Beat Frequency Oscillator.pdf
Back Door Alarm.pdf
Backlight Delay.pdf
BASCOM AVR Course Part 4 EK 2008-12.pdf
BASCOM AVR Course Part 6 EK 2009-02.pdf
Basic Antenna Tuner Box.pdf
Basic Car Alarm.pdf
Basic stamp computer eases prototyping hassles.pdf
Basic Techniques of Fault Finding.pdf
Basic Test Setup for Digital Circuits.pdf
Basically BASIC Part 14 ME 1982-12.pdf
Basics of Radio Transmission and Reception Part 6 EA 1986-12.pdf
Bat Detector.pdf
Bathroom Fan Controller.pdf
Battery Solutions for Old Multimeter.pdf
Before you dig in BC.pdf
Beginners Guide to Vintage Radio.pdf
Bell-Gong Sound Effect.pdf
Below 50 Cycles in 1949.pdf
Beryllium Danger.pdf
Bi-Quad Audio Notch Filter.pdf
Biasing FETs.pdf
Big Ben 95 Sound Effect.pdf
Bike Light Saver.pdf
Bipolar Train Controller Errata EA 1979-02.pdf
Blinker Controller.pdf
Blown Fuse Indicator.pdf
Boost converter generates three analog rails (2).pdf
Boost converter generates three analog rails.pdf
Bootstrapped boost converter operates at 1.8V.pdf
Boss DR-110 Service Manual.pdf
Boss DR-55 Service Notes.pdf
Bracket Problem from APRIL 1972.pdf
Brake Light Warning System.pdf
Breadboard Survey Part 1 WW 1978-11.pdf
Breadboard Survey Part 2 WW 1978-12.pdf
Breadboard-Perfboard Combo.pdf
Brociner Mark 10 Integrated Audio Amplifier.pdf
Brushless DC Motor Controller.pdf
Build A Cold Smoker.pdf
Build a Diode Temperature Probe.pdf
Build A Smart Switch.pdf
Build A Surface Mount Shortwave Radio.pdf
Build Panoply.pdf
Building Projects - How to buy and substitute parts.pdf
Building Solar Powered Repeaters.pdf
Bulb Protector.pdf
Buying Your First 3D Printer.pdf
Calculator Charts for Hex Displacements.pdf
Camper DC Power - A better way.pdf
Can You Hear the Difference.pdf
Capacitance Measurement by Frequency Shift.pdf
Capacitance Meter.pdf
Capacitive Discharge Ignition Issues EA 1979.pdf
Capacitive Liquid Level Measurement.pdf
Capacitive Sensor that handles parasitics.pdf
Capacitor Discharge Ignition System for positive or negative ground classic cars.pdf
Capacitor Survey.pdf
Capacitors for SCR Commutation.pdf
Capricious Blinking Light.pdf
Car Alarm Update for ETI 184 project.pdf
Car Battery Charger-Maintainer.pdf
Car Burglar Alarm Errata EA 1976-11.pdf
Cascading Regulators to get Odd Voltages.pdf
Central Heating Controller.pdf
Ceramic Resonators as IF filters and Oscillators.pdf
Changeover Switch WIth Built In Priority.pdf
Charge Li-ion batteries from ac line voltage.pdf
Choetech T550-F Wireless Phone Charger.pdf
Choosing Capacitors.pdf
Choosing The Right LED COB.pdf
Circuit for differential output from a single-ended precision DAC.pdf
Circuit for offset adjustment of input signals for Measurement systems.pdf
Circuit optimizes phototransistor bandwidth.pdf
Circuit protects against ac-line disturbances.pdf
Circuit protects FPGAs from killer spikes.pdf
Circuit showing overstress protection on ADC with integrated analog front end.pdf
Circuit Translates from A law to  law.pdf
Circuits provide 4- to 20-mA PWM control.pdf
Circular Connectors, Their proper useage and reliability.pdf
Circular slide rule provides quick results.pdf
Classe CA-150-151 Power Amplifier.pdf
Classe CA-200 CA-201 Power Amplifier.pdf
Classe CA-401 Power Amplifier.pdf
Classe CAM-350 Power Amplifier.pdf
Classe CAP-80 CAP-101 Service Manual.pdf
Classe CAV-150 Power Smplifier.pdf
Classe CAV-180 Power Amplifier.pdf
Classe CAV-75 Power Amplifier.pdf
Classe CP-65 Preamplifier.pdf
Clipping Indicator.pdf
Clock-Tunable, Monolithic 5-Pole Lowpass Filter.pdf
CMOS Guardian Alarm.pdf
CMOS Logic Part 3 EFY 1984-10.pdf
Cobol Programming Part 4.pdf
Cobol Programming Part 5 EFY.pdf
Cobol Programming Part 5.pdf
Code Lock with only 6 Components.pdf
Code Lock.pdf
Commercial Killer for Clock Radio.pdf
Common Mode Chokes.pdf
Compact Amplifier for Residence Audio Systems Part 2 AU 1949-04.pdf
Comparative Study of Computer Languages Part 2 EFY 1985-08.pdf
Comparative Study of Computer Languages Part 3 EFY 1985-09.pdf
Comparative Study of Computer Languages Part 7 EFY 1986-01.pdf
Comparative Study of Computer Langyages Part 13 EFY 1986-07.pdf
Consider the Turntable System.pdf
Constant Current NiCd Charger with Automatic Shut Off.pdf
Constant Resistance Dividing Networks.pdf
Continuously Variable Equalization Amplifier.pdf
Controller for Daytime Running Lights.pdf
Controlling Voltage Switched Power Supplies.pdf
Conversion techniques adapt voltages to your needs.pdf
Converting DAC output from single-ended to differential mode.pdf
Corner Speaker Design for Television Etc.pdf
Counter Circuits.pdf
Counter Valve c1959.pdf
Craig T620 Automotive Head Unit Service Manual.pdf
Crystal Checker.pdf
Crystal Clock Drive Unit.pdf
Crystal Oscillators (2).pdf
Crystal Oscillators.pdf
Crystal Radio Errata ETI Hobby Electronics Project Book 1982.pdf
Current Feedback Opamps.pdf
Current Mode Controlled Quasi-Resonant Zero Voltage Switching Power Conversion.pdf
Current-to-voltage converter circuit for audio DACs 2019.pdf
Curses, They've Done the impossible - Electronic Echo 1972.pdf
Cut-Rate Motorbike Alarm.pdf
CW ID Generator.pdf
CW QRP transmitter for 80 metres.pdf
CW transmitter for 160 to 20 metres.pdf
Cybernetic Beetle & Moth.pdf
DAC force and sense reference drive circuit.pdf
Data Analytics Applications.pdf
Daylight Switch.pdf
Daytime Running Lights for your car errata EN 1998-10.pdf
DC Controlled Volume Control.pdf
DC Motor Modelling for Dynamic Stabability Analysis.pdf
DC Network Analysis Program in BASIC.pdf
DC-DC converter operates from phone line.pdf
DC-DC Converter with Fast 75S Response.pdf
DC-DC Converters for Portable Computers.pdf
DC-DC Doen Converter with 3.3V & 5V Output.pdf
De-Thump Circuit for Audio Amplifiers and a Multi-meter Impedance Booster.pdf
Dekatron decimal counter valve.pdf
Denon-TU-1500-Service-Manual.pdf
Design and Use of Mixing Networks Errata.pdf
Design of Loaded and TRAP dipoles using a computer program.pdf
Design Tips for 15-40 Dipole Antennas.pdf
Designing Circuits for Worst Case Information.pdf
Designing DC Power Supplies - Some ICs mentioned may no longer be available.pdf
Desulphater for Car Batteries.pdf
Detecting acceleration and magnetic fields..pdf
Develop Your Own Custom Arduino.pdf
Digital Clock with a Dial Display.pdf
Digital Electronics Projects 1983 - Hawkins.pdf
Digital potentiometer autonulls op amp.pdf
Digital Stop Clock.pdf
Digital Stylus Timer (2).pdf
Dimmable LED Light.pdf
Direct Reading Capacitance Meter.pdf
Disc Recording for Broadcast Stations.pdf
Disco Light Controller.pdf
Disco Strobe Light ETI 574.pdf
Do It Yourself Logic Chips.pdf
Doorbell Battery Saver for ETI 044 and similar.pdf
Doorbell for the Deaf.pdf
Driving Three-Phase Brushless DC Motors.pdf
DSP Primer.pdf
Dual 5V rails from a 9V Battery.pdf
Dual comparators stabilize proximity detector.pdf
Dual flip-flop forms simple delayed-pulse Generator.pdf
Dual In Line LED Probe.pdf
Dynacord Add One - Service Manual.pdf
Dynamic Noise Filter.pdf
Dynamic Noise Limiter for tapes, etc.pdf
Echo Effects with a Tape Recorder.pdf
Economic Considerations in Industrial Ultrasonics.pdf
Economical White Noise Source.pdf
Effective Length of Ferrite Rod Aerials.pdf
Efficieicy Of Direct Radiator Loudspeakers.pdf
Efficient DC Dimmer.pdf
Electric Guitar Sustain Circuit.pdf
Electrical Engineer's Handbook 1950.pdf
Electrochune 23 Note Mini Organ.pdf
Electromatic Interferences on Power Lines.pdf
Electronic Camera Shutters - How they worked in the 1970s.pdf
Electronic Cat's Eye.pdf
Electronic circuit breaker protects to 26V.pdf
Electronic Circuits for the Evil Genius, 2nd Ed - 64 Lessons with Projects.pdf
Electronic Dice Notes EFY 1984-06.jpg
Electronic Door Lock using Arduino code.rar
Electronic Door Lock Using Arduino.pdf
Electronic Light Flasher.pdf
Electronic Organ Tone System Part 2 WW 1978-11.pdf
Electronic Safety Flare.pdf
Electronic Scoreboard.pdf
Electronic Sensor Circuits & Projects.pdf
Electronic Techniques for Automatic Process Control Part 1 EFY 1985-08.pdf
Electronic Techniques for Automatic Process Control Part 2 EFY 1985-09.pdf
Electronic temperature comparitor for solar energy systems or attic fans.pdf
Electronic Thermostat.pdf
Electronic Voting Machine Part 2 EFY 1986-01.pdf
Electronics DiY tools.pdf
Electronics For Kids.pdf
Electronics For You Vol 10-1979.pdf
Electronics Projects for Your Car.pdf
Electronics What Everyone Should Know 1947.pdf
Electrosmog Detector Recycling an old Walkman.pdf
Elektor Magazine Shorthand.pdf
Elektor Wheel Part 1 EK 2009-08.pdf
Eliminator 200W Mobile Inverter Owners Manual.pdf
Embrace Failure.pdf
EMC Directive for Home-Made Electronics.pdf
Emergency Broadcast System Monitor.pdf
Emergency Light and Power Failure Alarm.pdf
Emergency Tone Alert System.pdf
Emerson 31L65, 31L66 AM-FM Radio.pdf
Emerson 31P67 AM-FM Radio.pdf
Emerson 31P75 AM-FM AC-DC Radio.pdf
Emissions killers trap common-mode currents.pdf
Enhance Power Supply Performance with Very Loe Dropout Regulators.pdf
Envelope Follower for Guitars and Organs.pdf
Etch Your Own PC Boards Part 3 RE 1983-02.pdf
Ethernet 10BaseT simulator jig yields zero emissions.pdf
European Style Blee-Bloop Siren.pdf
Evolution of Electric Railways.pdf
Excursions Into Excel Part 4 EAB 2001-02.pdf
Expanded Scale AC Voltmeter.pdf
Experimental Noise Suppressor.pdf
Experimental Untrasonics Part 2 AE 1949-04.pdf
Experimenting with an Infrared Receiver Module.pdf
Exploit D-A converters in unusual controller designs.pdf
Exponential expansion provides an a-octave audio sweep signal.pdf
External Horn Programmable Timer.pdf
Factors Affecting Frequency Response and Distortion in Magnetic Recording.pdf
Factory Finish Labels.pdf
Fast Peak Detectors.pdf
Fast-settling synchronous-PWM-DAC filter has almost no ripple.pdf
Feedback Part  3 Phase to Phase EFY 1985-08.pdf
Feedback Phase to Face Part 4 EFY 1985-09.pdf
Feedline Primer.pdf
Fender American Vintage II 1966 Jazz Bass Parts Layout.pdf
Ferroelectric ceramics in electronics.pdf
Filter Assortment.pdf
Filter Tuner One Valve Receiver.pdf
Finding Clock Glitches.pdf
First Base A Beginner's Guide to Logic Design Part 3 Maplin 1983-09.pdf
First Mass Production Tape Reproduction 1949.pdf
Five One Transistor Projects.pdf
Flash Memory Vpp Generator.pdf
Flexible Decade Amplifier.pdf
Flip Flops Exposed.pdf
FM Signal Generator Errata EFY 1985-8.pdf
FM Signal Generator.pdf
FM Signals and FM Antennas.pdf
FM Square & triangllar wave generator.pdf
Fog Lamp Sensor.pdf
Forget the Power Leads. Check your testing.pdf
Four-Band Mobile Antenna.pdf
Freezer Trick.pdf
Frequency dithering enhances high-performance ADCs.pdf
Frequency Divider with 50% Duty Cycle.pdf
Frequency Foldback Technique Protects SMPS devices.pdf
Frequency Meter ETI 118 Overflow Indicator.pdf
From C to Hardware using FPGAs.pdf
Function Generator Errata 73 1992-01.pdf
Fundamentals Of Solid State Chapter 2 EA 1969-06.pdf
Fundamentals of Solid State Chapter 5 EA 1969-09.pdf
Further Thoughts About Oxygen Free Copper Audio Cables.pdf
Fuzz Unit.pdf
Garage Door Extender Antenna.pdf
Geiger Counter.pdf
Generate an analog signal with a uC eith Code.pdf
Get more than three colors from a dot-matrix LED.pdf
Graphic Equalizer Errata EFY 1983-01.pdf
Ground Fault Interrupter (2).pdf
Ground Fault Interrupter.pdf
Grundig RR740 RR770 Portable.pdf
Guitar Pickup Tone Extender.pdf
Guitar Practice Amplifier.pdf
Gyrator Audio Notch Filter.pdf
Gyrator Theory.pdf
Halogen Lamp Dimmer.pdf
Handbook of Sound Reproduction Chapter 15 Part 1.pdf
Handbook of Sound Reproduction Chapter 5 Audio 1952-10.pdf
Handy Aid to Fine Soldering.jpg
Happy Halloween.jpg
Hassle-free Placement of SMD Components.pdf
Head Alignment with Visible Magnetic Tracks.pdf
Headset Amplifier.pdf
Hearing, the Determining Factor for High-Fidelity Transmission by Harvey Fletcher Part 1 Ausui 1928-07.pdf
Heat Transfer Physics.pdf
Heathkit IB-1101 Counter Upgrade.pdf
Heathkit W-6M 70W Power Amplifier with Variable Damping.pdf
Hee Haw Siren for Toys.jpg
HF Broadband Balun.pdf
HF-VHF Receiver.pdf
HH Scott 311 FM Tuner Schematic.pdf
High Bandwidth AM Modulator.pdf
High Current LED Pulser.pdf
High Frequency Differentiators Update WW 1978-08.pdf
HIGH FREQUENCY HIGH CURRENT TRANSISTOR CHOPPER.pdf
High Power Amplifier Design Issues.pdf
High Quality Dual Channel Amplifier Errata Audio 1956-01.pdf
High Quality Omnidirectional Condensor Microphone 1949.pdf
High Voltage Meter.pdf
HIGH VOLTAGE TRANSISTORS WITH POWER MOS EMITTER SWITCHING.pdf
High-compliance current source.pdf
High-current voltage output circuit using a precision DAC.pdf
History or Electronics Philbrick K2-W the mother of all op amps.pdf
Home Study Course in Electronics Part 2 EA 1972-03.pdf
Home Study Course in Electronics Part 9 Radio Transmission EA 1972-01.pdf
Horn Loaded Loudspeaker System.pdf
Horn Type Loudspeakers.pdf
Hourly Chime for Digital Clock Errata EFY 1985-05.pdf
How Adders Work.pdf
How Batteries Work.pdf
How Keyboards Work.pdf
How Loud Is SIlence.pdf
How to buy a hi-fi system in 1972.pdf
How to Correct Turntable Bounce.pdf
How to detect ultraviolet, visible light and infrared Radiation.pdf
How to Solder Quick Guide.pdf
Hum Filter for Hi-Fi systems- 50 Hz - ETI 451.pdf
Humidity Control.pdf
ICs for Test Instriments.pdf
Image Sensor Theory.pdf
Implement a 9 bit UART on a PC.pdf
Improved 7 segment display.pdf
Improved Hybrid HeadPhone Amplifier.pdf
Improved Version of Parlour Game Errata EA 1969-08 P109.pdf
Improved VHF-UHF masthead amp.pdf
In Circuit Ohmmeter.pdf
Increasing voltage output of 3 terminal regulators.pdf
Inexpensive Electric Eye.pdf
Inexpensive logic controls stepper motor.pdf
Inexpensive Multitester Errata EFY 1985-12.pdf
Inexpensive peak detector requires few components.pdf
Inproving a Tube Tape Amplifier.pdf
Instant Circuits.pdf
Intercom with only 6 components.pdf
Interface nonstandard sensors using standard circuit methods.pdf
Interfacing R-C Servos.pdf
International Reply Coupons,.pdf
Introducing BASIC.pdf
Introduction to solar water heating.pdf
Isolated 5V 100mA power supply for ADC circuits.pdf
Isolated Drive Circuit for PWM Drives requiring 0% to 100% Duty Cycle.pdf
Isolated driver forms solid-state circuit breaker.pdf
Isolated indicator signals telephone line's status.pdf
Jamet with this big pointy thing in Paris 2023-10-27.jpg
JBL A6000GTI Car Audio Power Amplifier Service Manual.pdf
JFET Preamplifier for Tired Receivers.pdf
JVC PC-X103BK service manual.pdf
Key Bounce Eliminator.pdf
LCD Monitor Bias Supply and White LED Driver.pdf
Lead Acid Battery Protector.pdf
Leading Zero Blanking with 74C926 Display Driver.pdf
LED Bargraph Display Chips.pdf
LED Bicycle Lights.pdf
LED Blinker.pdf
LED Control Circuit Fault Indicator Errata EFY 1983-01.pdf
LED flasher and triac pulser work off ac line.pdf
LED Flasher.pdf
LED Indicator draws only 20mW.pdf
LED Night Light.pdf
LED Snowboarding Goggles.pdf
LED Tester.pdf
Light Beam Relay.pdf
Light Bulbs as RF Power Indicators.pdf
Light Minder for the Blind.pdf
Lighting Up Model Aircraft.pdf
Lightning Control Unit Errara PW 1973-07.pdf
Lightning Detector Notes SC 2011-12.pdf
Limiting amplifier is digitally programmable.pdf
Line Radiator Speakers.pdf
Line-powered driver lights up high-power LEDs.pdf
Linear Regulator with Switchmode Overcurrent Protection using UC3832.pdf
Links - FREE ELECTRONICS TEXT BOOKS.pdf
Links - Software for Electronics.pdf
LiPo Monitor.pdf
Listen to Your Lawn.pdf
Listening Bug.pdf
Lloyd's 9J41-100A AM-FM Radio.pdf
Load Protection for Audio Amplifiers.pdf
Logic Probe with Readout.pdf
Logic Probe.pdf
Look and Listen.pdf
Loop-powered 4- to 20-mA transmitter circuit.pdf
Loudness Control for Reproducing Systems.pdf
Loudness, Its Definition, Measurement and Calculation Part 1 Audio 1958-01.pdf
Loudspeaker Measurement System - Software link is still good in 2023-11.pdf
Loudspeaker System Design Follow up WW 1978-06.pdf
Low Battery Detector Circuit.jpg
Low Battery Detector.pdf
Low Cost 4 Channel Power Amplifier.pdf
Low Cost Power Supplies from Recycled AC Adapters.pdf
Low Cost Startup and Fault Protection for SMPS.pdf
Low Cost Video Amplifiers.pdf
Low Current Timer.pdf
Low Current Touch Switch.pdf
Low Frequency Electronic Muscle Stimulator.pdf
Low Noise Mic Pre-amp.pdf
Low-battery voltage cutoff consumes just 1 mA.pdf
Low-cost Loop Antenna Extends AM Radio Reception.pdf
Low-cost switcher converts 5 to 24V.pdf
Low-cost, linear A-D conversion using single-slope technowues.pdf
Low-Drop Series regulator Using a TL431.pdf
Low-dropout linear regulators double as voltage supervisor circuits.pdf
Low-power converter has galvanic isolation.pdf
Low-voltage interface circuits translate 1.8 to 5V.pdf
Low-voltage reset operates below 2.7V.pdf
Magnetic Recording Theory in 1948.pdf
Magnetic Stirrer.pdf
Mail Box Monitor.pdf
Make a low-cost benchtop power meter.pdf
Make your computer work as a Control Center.pdf
Making Magnetic Recordings Visible 1949.pdf
Making Use of Audio Indicators.pdf
Manual AC Mains Regulator Errata EFY 1979-07.pdf
Maplin Magazine Issues 1-4 from1982 Errata.pdf
Marine Speedometer Errata PRE 1975-02.pdf
Masthead Amplifier for TV and FM.pdf
Masthead Amplifier Update EA 1979-08.pdf
Matching the end-fed random-wire antenna.pdf
Maxi LED Display.pdf
MCS-51 endows MicroLan-like protocol to UARTs.pdf
Measurement of Inductance - Problems and Solutions.pdf
Measuring Large Currents with a DMM.pdf
Measuring Milliohms with a Multimeter.pdf
Measuring RF Power.pdf
Meltdown Alarm.pdf
Memory-termination IC balances charges on series capacitors.pdf
Metal Locator.pdf
Metronome Errata EFY 1979-09.pdf
Micro Squeaker with Fruit Battery.pdf
Micro Theremin for MW or AM Radio.pdf
Micronta 22-203 Multimeter Service Manual.pdf
Microphone Preamp with Adjustable Bass Response.pdf
Micropower 8 Bit DACs.pdf
Microprocessor Control with BASIC Conclusion ME 1989-05.pdf
Milliohm Adapter Errata SC 2010-02.pdf
Mini Radio.pdf
Minilab Multiple Voltage Lab Power SUpply.pdf
Minimalistic Time Switch.pdf
Minisonic Part 3 Errara PRE 1975-01.pdf
Minisonic Part 5 PrE 1975-03.pdf
Misc Elecronics Tips.pdf
Mixed Double Configuration and a DC Millivoltmeter.pdf
Mobile 3W LED Lamp.pdf
Model Train Projects.pdf
Modulation Systems.pdf
Momentary Action with a Wireless Switch.pdf
Monitor Deflection Circuits.pdf
Monitor Dual Supply Batteries.pdf
Morse oscillator.pdf
Morse-A-Word Parts 1 & 2.pdf
MOS-Clock Part 2 EK 1975-06.pdf
Motion Picture Film Sound Reproducers.pdf
Motor Speed Control.pdf
Motorcycle Headlight Flasher.pdf
Movie Mixer Power Supply for EA 1978-09.pdf
Moving Coil Alarm Sensor.pdf
Multi Channel Audio Mixer Preamplifier from 1958.pdf
Multi Channel Oscilloscope Display.pdf
Multimeters and how they are used.pdf
Munson 12W Amplifier-Preamplifier Schematic.pdf
Museum Watchdog.pdf
Musicolour II Conclusion EA 1972-01.pdf
Network Analysis - Superposition Theorem.pdf
New Driver ICs Optimize High Speed Power Mosfet Switching haracteristics.pdf
Noise and Its Amateur Implications.pdf
Non-inverting microphone pre-amplifier circuit.pdf
Nostalgic Tube Sound From an IC.pdf
Novice aerial tuning unit.pdf
NRZ Recording Errata EA 1977-04.pdf
Null Indicator.pdf
Obtaining frequency-locked triangle waves.pdf
Oddball Offsets for the KDK-201R 73 Pre 1981.pdf
On Guard Loop Alarm Part 2 Maplin 1997-01.pdf
One Button Digital Timer.pdf
One Button On-Off with SCRs.pdf
One oscillator drives multiple solid-state relays.pdf
One Wire RS-232 Half Duplex.pdf
One-touch diode tester.pdf
Onkyo TX-800 Tuner-Amplifier ServiceManual.pdf
Op-Amp Booster Circuits.pdf
Opacity Measurement.pdf
Open Window Timer.pdf
Operating LEDs on 1.5V Battery.pdf
Optical Communications System Basics.pdf
Optical encoder controls range switch.pdf
OPTIMISED POWER STAGES FOR HIGH FREQUENCY 380-440VAC MEDIUM POWER SWITCH MODE SUPPLIES.pdf
OptoMOS Solid State Relays.pdf
Organizing an Electronic Unit for Mass Production Part 1 EFY 1985-08.pdf
Organizing an Electronic Unit for Mass Production Part 2 EFY 1985-09.pdf
Orion Errata PRE 1975.02.pdf
Over Heat Detector.pdf
Over-Current Protection Notes EFY 1984-07.pdf
Pages from Electronic-Experimenters-Handbook-1984-4.pdf
Panasonic 7878 AM-FM Portable Radio.pdf
Panasonic D6260 Cassette Recorder.pdf
Panasonic SA-VK880PU DVD Stereo System.pdf
Passive Crossover Networks for Bi-Amplifier Systems.pdf
PC Power Saver.pdf
PCB Artwork for ETI 144, ETI 148, ETI 451 & ETI 724.pdf
PCB Artwork for ETI 254 & ETI 472.pdf
PCB Drilling Guide.pdf
PCB ETI 576.pdf
PCB ETI 731.pdf
Penncrest 1145 AM Portable Radio.pdf
Personal Intrusion Detector.pdf
Phase Locked Loop Decoder.pdf
Phase Sequence Detector.pdf
Phono Cartridge Capacitive Loading.pdf
Phono Pickup Design Considerations.pdf
Phono Recording Stylus Technology.pdf
Photo-flash charger with minimal parts count.pdf
Photodiode amplifier circuit.pdf
Photovoltaic Battery Charge Controller (EFY 2011).pdf
Pi Coupler.pdf
Picture Tube Tester Rejuvenator.pdf
Piezo device generates buzz, beep, or chime.pdf
Piezoceramics plus fiber optics boost isolation voltages.pdf
Piezoelectric Experiments.pdf
Pink Noise Generator for Audio Testing.pdf
Pinpoint your relay needs by writing complete specifications.pdf
Playmaster 10 Band Stereo Graphic Equalizer.pdf
Playmaster 10W Amplifier Part 1 EA 1979-05.pdf
Playmaster 300W Loudspeaker Protection Notes EA 1980-05.pdf
Poltergeist.pdf
Poor man's metal detector.pdf
Port Expander.pdf
Portable Crystal Controlled 60Hz Clock Oscillator.pdf
Portable Crystal Tester.pdf
Potted Plant Battery.pdf
Power Cut Alert.pdf
Power Factor Correction Circuits.pdf
Power for Microcontrollers.pdf
Power On Indicator.pdf
Power over Ethernet.pdf
Power Plus for the Omni - Improving in Ten-Tec's Power Supply 73 pre 1981.pdf
Power Saving Relay Driver.pdf
POWER SEMICONDUCTORS FOR HIGH FREQUENCY AC-DC CONVERTERS SUPPLIED ON THE 380-440V MAINS.pdf
POWER STAGE FOR A 20kHz 10kW SWITCHED MODE POWER SUPPLY FOR INDUSTRIAL 380-440V MAINS.pdf
Power Supplies for Op Amps.pdf
Power Supply Design Basics.pdf
Power Supply Sequencer.pdf
Power Up-Down Sequencer.pdf
Power-supply margining circuit for LDOs using a orecision DAC.pdf
Power-supply margining circuit for SMPS using a precision DAC.pdf
Powering Additional Internal Hard Drives.pdf
Practical Electronics - Tagstrips, Circuit Boards and Breadboards.pdf
Pre-Primary Tutor Using Arduino.pdf
Precise DC floating-current source.pdf
Precision current sink costs less than $20.pdf
Precision References for Current And Voltage.pdf
Predicting Third Order Intermodulation.pdf
Prevent Emitter Follower Oscillation.pdf
Program provides integer-to-binary conversion.pdf
Programmable charger fills capacitor banks.pdf
Programmable Digital Data Display - Arduino Based.pdf
Programmable Electronic Circuit Breaker.pdf
Programmable fairy lights.pdf
Programmable low-side current sink circuit.pdf
Programmable voltage output with sense connections.pdf
Programmable Volume Control Errata EFY 1985-11.pdf
Programmable, two-stage, high-side current source circuit.pdf
Programmer for PICs Essara SC 2008-05.pdf
Proper Analog Signal Handling for Data Converters.pdf
Pseudo CW Filter Errata 73 1991-06.pdf
Psuedo Fan.pdf
Psychedelic Lights.pdf
Psycho-Acoustic Aspects of Higher Quality Reproduction.pdf
Pulse Amplitude Reference.pdf
Pulse Generator.pdf
Pulsing charge pump drives capacitive loads.pdf
Pump Your Shoes.pdf
Pyroelectric IR Sensors.pdf
Q-Meter.pdf
Quadrophonic Decoders - Various Schematics.pdf
Quag-V Antenna Errata 73 1991-12.pdf
Quartz Crystal Tester.pdf
Quick and Dirty Line Noise Suppressors.pdf
Quick Primer on Resistors.pdf
Quiz-Master.pdf
R-C Substitution Box.pdf
Radio-Craft_1938_11.pdf
RCA RCG 111, 120 AM Portable Radio.pdf
RCA RZG 107 AM Portable Radio.pdf
Reaction Testing Game.pdf
Reading Capacitor Codes.pdf
Reading Digital Data On the Arduino platform.pdf
Recording Characteristics Part 1 Audio 1949-12.pdf
Recording Perspective.pdf
Rectifier tracks both positive and negative peaks.pdf
Reducing gain and drift effects on ADCs with integrated analog front ends.pdf
Relative humidity gauge.pdf
Relay Control Tutorial.pdf
Relay Power Supply Protector.pdf
Relay Terminology.pdf
Relays In Action - Assorted Relay Applications.pdf
Remote Control Channel Splitter for R-C Systems.pdf
Remote Control Extender.pdf
Remote Control for Network Devices.pdf
Remote Switch For Car Alarm Errata SC 1988-03.pdf
Remote Washing Machine Alert.pdf
Repeater Keying Line Control.pdf
Resonant Mode Power Converter Control Circuits.pdf
Reverse RIAA Adapter for Phono Preamp Testing.pdf
Rewiring you house to British Standard.pdf
RF Bridge.pdf
RGB LED Driver.pdf
Robotalk from an ATtiny Microcontroller.pdf
Roland MC-505 Groovebox Service Notes.pdf
RS232 Monitor-Control System.pdf
RS232 Serial Interface Troubleshooter.pdf
RS232 Wiring Tester.pdf
RS232Transceivers that withstand 10kV ESD.pdf
S-Video Converter.pdf
Safety for the Travelling Ham.pdf
Sawtooth Generator Notes EFY 1984-04.pdf
Scarecrow.pdf
Schrodinger's Egg.pdf
Screen Printing Techniques for the Electronics Industry Errata EFY 1979-01.pdf
Secrets of Transmission Lines Part 6 The Smith Chart 73 2000-01.pdf
See and Speak Using Raspberry Pi code.rar
See and Speak Using Raspberry Pi.pdf
Self on Audio (2nd Ed.).pdf
Semi-Automatic Remote Control of Diesel Generator.pdf
Send Color Video 1000 Feet Over Low Cost Twisted-Pair.pdf
Sensing PLL Locked State with D-Flip-flops.pdf
Sensitive Audio Power Meter.pdf
Sensitive Micro Meter.pdf
Serial or Parallel Port Interface for PCs.pdf
Series-Pass Regulators.pdf
Servicing Classic Audio Troubles.pdf
Servo Driver.pdf
Servo Scales.pdf
Shock Sensor Amplifier - Accelerometer.pdf
Short Circuit Detector.pdf
Short Circuit Finder.pdf
Shunt regulator provides overvoltage protection.pdf
Signal Mixer with 10 Input Channels.pdf
Simple Bounce Free Switch.pdf
Simple CMOS Touch Switch.pdf
Simple Effective Car Burglar Alarm for Classic Cars.pdf
Simple Electronic Keyer.pdf
Simple Emergency Stop System.pdf
Simple Intruder Alarm.pdf
Simple Isolation Amplifier.pdf
Simple Light and Sound Indicator for Mains Power Supply.pdf
Simple logic probe uses bicolor LED.pdf
Simple NiCd Charger.pdf
Simple Noise Generator.pdf
Simple Precision Workbench Power Supply.pdf
Simple Symmetrical Power Supply.pdf
Simple Touch Control Switch.pdf
Simple VHF Preamplifier.pdf
Simple Wire Link Bender.pdf
Simplified Car Lights Reminder.pdf
Simplified Guide to Programming in BASIC - Really super simplified.pdf
Sine Wave and Square Wave Oscillators.pdf
Sine-wove-generotor design.pdf
Sineophone Music Maker.pdf
Single IC biases LCD and GaAsFET amplifier.pdf
Single Lithium Cell Charger.pdf
Single Tone Paging for Wilson HTs Errata 73 1980-12.pdf
Single wire connects microcontrollers with code.pdf
Six Bit DAC with 10 Bit Precision Errata ETI 1982-02.pdf
Six-digit Display with SPI Port.pdf
Slave Flash Trigger.pdf
Slot Car Sniff Racing Control System.pdf
Slow Glow.pdf
Small Audio Power Amplifier.pdf
Smart Chocolate Block.pdf
Smart Power Relay for Cars.pdf
Smart switch cuts transformer turn-on current.pdf
SMD Repair.pdf
SMD Transistor Tester.pdf
Smooth LED Flasher.pdf
Smoothing Filter for Motorola Piezo Tweters.pdf
SN008 Expected Lifetime of Aluminum Electrolytic and Aluminum Polymer Capacitor.pdf
Snail Mail Detector.pdf
Soil Moisture Tester.pdf
Solar Energy Projects for the Evil Genius.pdf
Solar heating temperature controller.pdf
Solar-driven Moisture Detector.pdf
Soldering Techniques Part 1 EFY 1979-04.pdf
Soldering Techniques Part 2 EFY 1979-05.pdf
Solid state grid dip oscillator.pdf
Solid State Night Light.pdf
Solid State Theremin.pdf
Solid State Voltage Regulators for Classic Cars.pdf
Solving the Microgroove Problem 1949.pdf
Some Considerations for Designers of Tape Recorders.pdf
Some puzzles in radio engineering fundamentals.pdf
Sonant Electronic Loudspeaker System.pdf
Sonic pulse generator.pdf
Sony BT4100E-BT4150U Automotive Head Unit.pdf
Sony CCD-TR330E Camvorder.pdf
Sony DCR-TRV255E series Camcorder.pdf
Sony MEX-XB100BT Automotive Head Unit.pdf
Sony TFM-9450W FM-AM Table Radio Service Manual.pdf
Sound and Voice Magnifiers.pdf
Sound Chapter 05 Audio 1956-02.pdf
Sound Chapter 6 Preamplifiers and Control Units Audio 56-03.pdf
Sound Shaping in Audio.pdf
Sound Triggerred Photo Flash.pdf
Speaker Protection Circuit.pdf
Specifications applicable to relays.pdf
Speech Bandwidth Compression Circuit.pdf
Speech Filter.pdf
Speed Alarm for Classic Cars with Points.pdf
Speed Sentry.pdf
Square Wave Oscillator.pdf
SRPP Headphone Amplifier.pdf
Stable Current Source with Bipolar Transistors.pdf
Start Up Aid For PCs.pdf
Step up - step down converter takes 2 to 16V inputs.pdf
Stereo DAC Errata SC 2009-09-10.pdf
Stereo FM Tuner - Mk II WW 1978-11.pdf
Stereo Image Widening.pdf
Stereo Roto-Blender.pdf
Storm Warning Lightning Monitor Errata EN 1998-10.pdf
Stress-o-Meter.pdf
Strip Chart Recorder for $1.pdf
Strobe Sequencer.pdf
Strobing Displays.pdf
Studio 200 Stereo Control Unit Pt. 2 SC 1988-07.pdf
Studio Control Room Design.pdf
Sub-Marine Sonics.pdf
Sun Powered Alarm.pdf
Super Simple Missing Pulse Detector.pdf
Super Timer.pdf
Supervisory circuit monitors modem connection.pdf
Surface Acoustic Wave Devices.pdf
Surplus Meters Errata 73 1992-01.pdf
Swapping a Button Cell for a Gold Cap.pdf
Switch Multiplier.pdf
Switched-capacitor regulator provides current gain.pdf
Switched-gain op amp serves as phase detector or mixer.pdf
Switching Amplifier.pdf
Switching Delay.pdf
Switching Power Supply Syncrhronizer.pdf
Switching Power Supply Theory.pdf
Switching with Relays.pdf
Switchmode Power Supplies that operate in the MHz range.pdf
Synchronous Oscillator FM-Stereo Adapter.pdf
Synchronous Stepdown Switching Regulators with up to 95% Efficiency.pdf
Tape Recorder Level Indicator.pdf
Tape Recorders, Tape & Equipment - 1950s.pdf
Tape Transport Maintenance Part 3 Audio1969-11.pdf
Technics SL-1700 Turntable Service Manual.pdf
Technique increases low-cost DAC's resolution.pdf
Telephone Hold Fearure for Land-Lines.pdf
Telephone Quality Assessments.pdf
Temperature Based Fan Speed Control with Arduino.pdf
Temperature Control for Crystal Oscillators.pdf
Temperature Controller.pdf
Temperature Dependent Power Controller.pdf
Temperature Measurement Guide.pdf
Temperature Sensing Part 1 EDN.pdf
Test Bench Tips.pdf
Tester for Inductive Sensors.pdf
The 88-50 Low Distortion 50W Amplifier.pdf
The Cutting Stylus Problem in Microgroove Recording.pdf
The Myth of Scratch Filters for Vinyl Records.pdf
The Tempered Musical Scale to 11 signifigant figures.pdf
Thermistor Education.pdf
Thinking About Your Display.pdf
Three Band Tone Control Part 2 EK 2009-10.pdf
Three Band Tone Control.pdf
Three Eyed Bandit Game.pdf
Three Function RS Latch.pdf
TIME -FREQUENCY MEASURING SYSTEM Part 2 73 1973-02.pdf
Time Switch From an Old Alarm Clock.pdf
Timer, Op Amp & Optoelectronic Circuits & Projects_text.pdf
Tiny Step Down Regulators with Wide Input Range.pdf
To Phase or Not to Phase.pdf
Tone Burst Source for Audio Amplifier Testing.pdf
Tone Control Amplifier Notes from EA 1971-11.pdf
Tone Lock.pdf
Tono 5000e Service manual NO OCR.pdf
Toroidal Quadrature Antenna.pdf
TOSLINK~SPDIF Converter Errata SC 2010-10.pdf
Touch Activater Programmer.pdf
Touch Switch with Latching Action.pdf
Touch Switch with Momentary Closing.pdf
Touchless Switch.pdf
Toward A More Realistic Audio.pdf
Traffic Light Control System using EPROM.pdf
Traffic Signals Errata EFY 1982-08.pdf
Trans-Impedance Microphone Preamplifier.pdf
Transfer data frames over asynchronous RS-232C lines.pdf
Transformer Design for Zero Impedance Amplifiers.pdf
Transformer Theory.pdf
Transformers and Optocouplers Implement Isolation Techniques.pdf
Transistor Beta Tester with Linear Scale.pdf
Transistor Damage from Stray Voltages from a Soldering Iron.pdf
Transistor quickly wakes sleeping LDO.pdf
Transistor RF Power Amplifiers.pdf
Transistor Tales Part 1 EAB 2001-02.pdf
Transistor Tester.pdf
Transistor Testing Aid for Ohmmeter.pdf
Transistor Tips Errata Audio 1956-02.pdf
Transmitter Test Keyer.pdf
Tricks you can do with a calculator.pdf
True Shutdown for Boost Converter.pdf
Tube style circuit provides linear tuning.pdf
Tucker Tin Mark 2 SSB Transceiver Part 3 EA 1972-04.pdf
Tucker Tin Mk2 SSB Transmitter Part 2 EA 1972-03.pdf
Tunable Aerial Amplifier Errata EK 1.pdf
Tunable Audio Frequency Meter.pdf
Turtle Robot Update ETI 1982-05.pdf
TV Antenna Switching.pdf
TV Sound Adapter Note EK2 P236.pdf
Two DAC Circuit Adds and Subtracts.pdf
Two Tap Bass and Treble Compensated Volume Control.pdf
Two Tone Electronic Doorbell.pdf
Two Wire Intercom.pdf
uC controls digital potentiometer.pdf
Ultra-LD Mk3 Stereo Amplifier Part 2 SC 2011-12.pdf
Ultrasonic Burglar Alarm Errata EA 1987-04.pdf
Ultrasonic Burglar Alarm.pdf
Ultrasonic Detector.pdf
Undersampling extends utility of digital scopes.pdf
Understanding BASIC Part 1 EA 1979-10.pdf
Understanding Ohm's Law.pdf
Unipolar negative voltage source from unipolar DAC circuit.pdf
Unipolar voltage output DAC to bipolar voltage output circuit.pdf
USB Powered FM Audio Transmitter.pdf
USB Powered Pre-emphasis for FM Transmitter.pdf
USB Switch.pdf
Use a simple LED for near-IR light.pdf
Using 3 Pin Fans on PCs with 4 pin fan connectors.pdf
Using a Schottky diode as a Varicap Diode.pdf
Using FET Op-Amps to implement complex functions.pdf
Using SPICE to Spice generate PSK and FSK signals.pdf
Using the 4060 As A Timer.pdf
Using Thermocouples.pdf
Utlilty Amplifier-Supply for the experimenter's bench.pdf
V & I Calibrator.pdf
Variabe Capacitors in Tuned Circuits.pdf
Variable Current Limiter for Power Supplies.pdf
Variable Speed Drives and Power Electronics.pdf
Varmint Zapper.pdf
Vented Loudspeaker Enclosures.pdf
Versatile Speech Synthesizer Part 1 ETI 647 - For educational Purposes Only.pdf
Versatile Tester with Audio Indication.pdf
VGA Background Lighting.pdf
Video Circuits Collection.pdf
Video equalizer sharpens VCR images.pdf
Video Isolator.pdf
Video-Writer Part 4 PW 1976-11.PDF
Vintage Radio Cabinet Restoration.pdf
Vocal Adapter for Bass Guitar Amplifier.pdf
Voltage monitor prevents deep discharge of battery.pdf
Voltage Radio vs Percentage Distortion.pdf
Voltage Regulator for Older Cars with an external regulator.pdf
VTVMs and FETVMs.pdf
Wah-Wah Foot Pedal.pdf
Watt - Watt-Hour Meter.pdf
Webcam View Illuminator.pdf
What are Liberals.pdf
What is a decibel.pdf
What is a Real Conservative.pdf
What is Negative Feedback.pdf
Which relay is right for you.pdf
White 2220-01-02 Swwing Machine Service Manual.pdf
Wide Range Touch Switch.pdf
Wideband Amplifiers (2).pdf
Wideband Amplifiers.pdf
Wind Generator Design Problems EA 1978-07.pdf
Windshield Wiper Controller for Classic Cars.pdf
Wire Wrapping Tools and Techniques.pdf
Wireless Ad-Zap.pdf
Wireless Hotel Ordering System.pdf
Wireless of Yesteryear.pdf
Wires and Cables.pdf
Women in the Engineering Industry.pdf
Woodworking 101 - Raspberry Pi Case.pdf
WWV to 80 Meter Convertor.pdf
XOR Frequency Multiplier.pdf
Zener Principles Part 1 EFY 1983-4.pdf
Zonal time computer.pdf

Notes On Vga To Rgb Conversion

Notes on VGA->RGB conversion:

Be warned some monitors (older SUNs in particular) use RGB+CSYNC i.e. 4 connections and not "sync on green" RGB. There may be a jumper inside the monitor to change this but you should seek assistance to make any changes of this nature. Alternatively you can just take the CSYNC signal from below and use it.

I have not blown up any monitors in my testing but it is possible to blow up a monitors input stage. If you are in any doubt get someone who knows what they are doing to do these alterations.

-------------------------------------------------
IF the video card you are using is a standard VGA output: (Im using a Diamond stealth 64 VRAM but I have also tested this on my wifes Tseng Labs SVGA card)
1: RED video
2: Green video
3: blue video
4: monitor id bit 2
5: Ground
6: red return
7: green return
8: blue return
9: NC
10: sync return
11: monitor id bit 0
12: monitor id bit 1
13: H sync
14: V sync
15: NC

I join all the "returns" together with the ground on the small PCB and use that as a common ground for the RGB cable to the monitor. You can use separate if you want to but you should join the green return and sync returns together. I did find some small shadowing if I didn't group them all together.

Just a note, when you set up your video card in Windows OS/2 or whatever, set it to whatever is closest to the monitor's resolution as a first approximation.  My Diamond gives me a lot of freedom for adjustment but some cards don't. As a general rule Workstation monitors are not interlaced.

I use a DEC VR260 (1024x864@60Hz) at 1027x768@70Hz or a VR319/320 (1280x1024@72) exactly as per the setup menu.

Dont forget you CANNOT do 1280x1024 with a 1M RAM video card!!!

Note: Your standard VGA monitor may not like this frequency so either disconnect it *VERY* quickly or before you actually set the video card to the new mode (i.e. put the OK as the active control in Windows and then connect the "big" monitor and hit return). My Diamond setup gives me 10 seconds to do adjustments.

When you exit you will probably have to select the new mode with your old VGA connected again but from then on every time you start Windows you will be able to view it in "big" mode. Note the workstation monitors are not multisync monitors so all you see  when you boot up DOS is garbage until Windows starts,  I put "win" in my autoexec.bat file.

If all else fails you can set the video card to the closest resolution i.e. 1024x768 for a 1024x864 monitor and adjust the Hsync and Vsync frequencies on the monitor. These may be accessible from the outside either as dials or by ***PLASTIC*** screwdriver access. DO NOT ***REPEAT*** DO NOT use a metal screwdriver for accessing these recessed sync controls. Alternatively they  may be inside the monitors case.

****************WARNING***************
If you have to open up a monitor to do this adjustment be warned: monitors have very *LETHAL* voltages inside. You will not get a second chance!!! Unless you know exactly what you are doing get someone else who does to do this adjustment.
****************WARNING****************

Note there is a danger here: During testing I had set up the monitor and for some reason it did not work so I couldn't see what was going on: My old VGA wouldn't work either either so I had to find the cards .ini files and edit by hand to get back to useable video !! Make a backup of the video/system .ini files just in case this happens.

For FreeBSD/XF86 setup is trivial, the lines for a DEC VR260 and a DEC VR320/319 using an XOR (or an OR) gate are:

Modeline "1280x1024" 130.81 1280 1312 1472 1696 1024 1027 1030 1063 +hsync +vsync Modeline "1024x864"  69.2   1024 1040 1168 1272 864  864  867  904  +hsync +vsync

For a NAND gate change the syncs tp -hsync and -vsync

See your monitor manual for the frequency, porch and blanking details

-------------------------------------------------------
The circuit to do this is as follows:
Note. 1: you may be dealing with 135MHz sqaure waves so there are lots of high frequency stuff around; use good RF practices.

2: the coupling capacitors are a safeguard to start with I dont use them cause they caused shadowing around sharp colour changes (the ol RC effect).

3: Use the XOR gate first as a test but you may need other gates to actually get it working

4: A CRO will be handy (necessary!) for final adjustment.

5: Make the device is as close as possible to the video outlet on the VGA card.

6: Take the 5V from the PC power supply inside the box. I just hooked one of the spare connectors which I also use for an external fan (5V pentiums being the heaters they are!). Make sure (check it again!!) (and again!!!) you dont get 12V else say "goodbye" to your monitor!!!

7: You must use a VN10KM or other SMALL SIGNAL N CHANNEL ENHANCEMENT MODE MOSFET. Others will not work !!!!!!!!

                        +5.0V
                        |
                        /
                        \ VR1 (1k carbon mini pot)
        33uF tantalum   |   ~0.3V DC in porch area
 GREEN------|----||-----|--------------------|-----GREEN to monitor|
            |----||-----|                    |                       
        .1-.01uF ceramic                     |                              
                                             |
        gnd                                  |
         |                                   |
         /                                   |
         \ 47k                               |                                
         /                                  _|
 HSYNC---|----|-------\                     |
              | GATE   |------CSYNC----|----||    VN10KM or similar small
 VSYNC---|----|-------/                /    |_   N channel enhancement MOSFET
         /    |                        \      |
         \                             /     gnd
         / 47k                         \ 47k
         |                             |
        gnd                           gnd

 HSYNC, VSYNC and CSYNC are grounded with 47k carbon resisitors
 GATE=LS or HC types, HC preferred.
 OR:   logic is: when both syncs 0 the gate output is 0 and the FET is off. When either or both syncs go +ve the gate drives the FET on which pulls the green to ground.
 NAND: logic is: when both syncs are logic 1 the gate output is 0 and the FET is off. When either sync goes to 0 the gate output drives the FET on and pulls the green output low. This is the most common form of sync output from PC SVGA cards hi res mode.
 XOR:  for -ve or +ve logic sync and hysnc during vsync logic is: when both syncs are 1/0 the gate output is 0 and the FET is off. When the Hsync changes state the FET turns on pulls green to ground. When the Vsync changes state the output is gated by the Hsync and if your video card produces Hsync during Vsync (most do) then the green signal will be a square wave with a non 50% duty cycle. Some monitors require this Hsync action during Vsync otherwise the horiz PLL loses lock.

Capacitors are optional, I dont use them now but I used them during testing. They will cause a shadow effect due to the 75ohm resistances at either end of the circuit causing a DC bias buildup on the green signal.

Get a CRO and adjust the variable resistor so that the green levels to 0.3V during video and 0.0V during sync pulses.

I used standard 74HC 14pin DIP gates and 14pin DIP sockets originally so that I could change gate types (OR/XOR/NAND) easily. 

Good luck

Notes_on_VGA_to_RGB_conversion

Notes on VGA->RGB conversion:

Be warned some monitors (older SUNs in particular) use RGB+CSYNC i.e. 4 connections and not "sync on green" RGB. There may be a jumper inside the monitor to change this but you should seek assistance to make any changes of this nature. Alternatively you can just take the CSYNC signal from below and use it.

I have not blown up any monitors in my testing but it is possible to blow up a monitors input stage. If you are in any doubt get someone who knows what they are doing to do these alterations.

-------------------------------------------------
IF the video card you are using is a standard VGA output: (Im using a Diamond stealth 64 VRAM but I have also tested this on my wifes Tseng Labs SVGA card)
1: RED video
2: Green video
3: blue video
4: monitor id bit 2
5: Ground
6: red return
7: green return
8: blue return
9: NC
10: sync return
11: monitor id bit 0
12: monitor id bit 1
13: H sync
14: V sync
15: NC

I join all the "returns" together with the ground on the small PCB and use that as a common ground for the RGB cable to the monitor. You can use separate if you want to but you should join the green return and sync returns together. I did find some small shadowing if I didn't group them all together.

Just a note, when you set up your video card in Windows OS/2 or whatever, set it to whatever is closest to the monitor's resolution as a first approximation.  My Diamond gives me a lot of freedom for adjustment but some cards don't. As a general rule Workstation monitors are not interlaced.

I use a DEC VR260 (1024x864@60Hz) at 1027x768@70Hz or a VR319/320 (1280x1024@72) exactly as per the setup menu.

Dont forget you CANNOT do 1280x1024 with a 1M RAM video card!!!

Note: Your standard VGA monitor may not like this frequency so either disconnect it *VERY* quickly or before you actually set the video card to the new mode (i.e. put the OK as the active control in Windows and then connect the "big" monitor and hit return). My Diamond setup gives me 10 seconds to do adjustments.

When you exit you will probably have to select the new mode with your old VGA connected again but from then on every time you start Windows you will be able to view it in "big" mode. Note the workstation monitors are not multisync monitors so all you see  when you boot up DOS is garbage until Windows starts,  I put "win" in my autoexec.bat file.

If all else fails you can set the video card to the closest resolution i.e. 1024x768 for a 1024x864 monitor and adjust the Hsync and Vsync frequencies on the monitor. These may be accessible from the outside either as dials or by ***PLASTIC*** screwdriver access. DO NOT ***REPEAT*** DO NOT use a metal screwdriver for accessing these recessed sync controls. Alternatively they  may be inside the monitors case.

****************WARNING***************
If you have to open up a monitor to do this adjustment be warned: monitors have very *LETHAL* voltages inside. You will not get a second chance!!! Unless you know exactly what you are doing get someone else who does to do this adjustment.
****************WARNING****************

Note there is a danger here: During testing I had set up the monitor and for some reason it did not work so I couldn't see what was going on: My old VGA wouldn't work either either so I had to find the cards .ini files and edit by hand to get back to useable video !! Make a backup of the video/system .ini files just in case this happens.

For FreeBSD/XF86 setup is trivial, the lines for a DEC VR260 and a DEC VR320/319 using an XOR (or an OR) gate are:

Modeline "1280x1024" 130.81 1280 1312 1472 1696 1024 1027 1030 1063 +hsync +vsync Modeline "1024x864"  69.2   1024 1040 1168 1272 864  864  867  904  +hsync +vsync

For a NAND gate change the syncs tp -hsync and -vsync

See your monitor manual for the frequency, porch and blanking details

-------------------------------------------------------
The circuit to do this is as follows:
Note. 1: you may be dealing with 135MHz sqaure waves so there are lots of high frequency stuff around; use good RF practices.

2: the coupling capacitors are a safeguard to start with I dont use them cause they caused shadowing around sharp colour changes (the ol RC effect).

3: Use the XOR gate first as a test but you may need other gates to actually get it working

4: A CRO will be handy (necessary!) for final adjustment.

5: Make the device is as close as possible to the video outlet on the VGA card.

6: Take the 5V from the PC power supply inside the box. I just hooked one of the spare connectors which I also use for an external fan (5V pentiums being the heaters they are!). Make sure (check it again!!) (and again!!!) you dont get 12V else say "goodbye" to your monitor!!!

7: You must use a VN10KM or other SMALL SIGNAL N CHANNEL ENHANCEMENT MODE MOSFET. Others will not work !!!!!!!!

                        +5.0V
                        |
                        /
                        \ VR1 (1k carbon mini pot)
        33uF tantalum   |   ~0.3V DC in porch area
 GREEN------|----||-----|--------------------|-----GREEN to monitor|
            |----||-----|                    |                       
        .1-.01uF ceramic                     |                              
                                             |
        gnd                                  |
         |                                   |
         /                                   |
         \ 47k                               |                                
         /                                  _|
 HSYNC---|----|-------\                     |
              | GATE   |------CSYNC----|----||    VN10KM or similar small
 VSYNC---|----|-------/                /    |_   N channel enhancement MOSFET
         /    |                        \      |
         \                             /     gnd
         / 47k                         \ 47k
         |                             |
        gnd                           gnd

 HSYNC, VSYNC and CSYNC are grounded with 47k carbon resisitors
 GATE=LS or HC types, HC preferred.
 OR:   logic is: when both syncs 0 the gate output is 0 and the FET is off. When either or both syncs go +ve the gate drives the FET on which pulls the green to ground.
 NAND: logic is: when both syncs are logic 1 the gate output is 0 and the FET is off. When either sync goes to 0 the gate output drives the FET on and pulls the green output low. This is the most common form of sync output from PC SVGA cards hi res mode.
 XOR:  for -ve or +ve logic sync and hysnc during vsync logic is: when both syncs are 1/0 the gate output is 0 and the FET is off. When the Hsync changes state the FET turns on pulls green to ground. When the Vsync changes state the output is gated by the Hsync and if your video card produces Hsync during Vsync (most do) then the green signal will be a square wave with a non 50% duty cycle. Some monitors require this Hsync action during Vsync otherwise the horiz PLL loses lock.

Capacitors are optional, I dont use them now but I used them during testing. They will cause a shadow effect due to the 75ohm resistances at either end of the circuit causing a DC bias buildup on the green signal.

Get a CRO and adjust the variable resistor so that the green levels to 0.3V during video and 0.0V during sync pulses.

I used standard 74HC 14pin DIP gates and 14pin DIP sockets originally so that I could change gate types (OR/XOR/NAND) easily. 

Good luck

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