Electronic Circuits


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Here are some neat circuits you might want to try. The schematics and printed circuit board patterns are GIF's, and may show up different on some browsers. You might want to save the images (especially the PC board patterns) to your hard drive, load them into a photo editor (Photoshop, Paint Shop Pro, The GIMP, etc.) and adjust the size before you transfer the pattern to a board. Printed circuit board patterns are available possible. This page is always under construction and there will be new additions from time to time. Some of these circuits were designed by me, most are not. Whenever possible I have tried to credit the author of a circuit but since many of these circuits are from my personal collection that I have gathered over a period of many years, this information is not always available.

You can rank circuits according to how much you like a circuit by clicking on the lightning bolt icons. These ranks can be based on how much you like a circuit, whether a circuit worked or didn't work for you, or how useful you found a circuit. Additionally you can add your own comments at the bottom of each circuit by filling out the form.

Circuit Catagories

Circuits are divided into categories as listed below.

Catagory Circuits
Auto 3
Computer 2
Light/Laser 21
Major Projects 2
Other 21
Power Supply 18
Sound/Radio 22
Telephone 8

Some circuits in this list have little astrisk (*) markers beside them which give a basic amount of information regarding whether the circuit has been designed, tested or modified by the webmaster.

Marker Description
* The circuit has not been tested by me. Therefore, I will offer no gaurantee that they will work.
* This circuit has been designed by me.
* This circuit was not designed by me, but was modified by me.

Most Popular Circuits

The most popular circuits of today, yesterday and all time can be found below.

When Circuit Views
Today
Saturday, September 22, 2018
Digital Keypad Combination Lock4
Stepper Motor Controller3
Yesterday
Friday, September 21, 2018
Dual Polarity Power Supply141
Stepper Motor Controller112
Of All Time 12VDC To 120VAC Inverter1,418,412
FM Transmitter938,496

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 191,615 61 *
Car Alarm Arming Horn Beep Canceller bob 103,290 6 *
Wireless Auto Tachometer 298,723 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 133,721 29 *
Parallel (Printer) Port Interface 237,355 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 394,607 63 *
3 Channel Spectrum Analyzer 187,839 20
40W Fluorescent Lamp Inverter Bart Milnes 291,304 60 *
Adjustable Strobe Light 265,513 36
Black Light 227,452 29
Colour (Sound) Organ 249,259 36
Electronic Dice NEW! 152,178 10 *
Fantastic Atom Expander 163,358 25
Flash Slave Trigger 183,654 18 *
Infa-Red Remote Control 584,574 216 *
IR Remote Extender NEW! 93,198 2 *
IR Remote Jammer Carl 227,337 110 *
IR Remote Switch NEW! 123,158 9 *
LASER Transmitter/Receiver 365,489 92
LED Chaser 408,851 83 *
LED Metronome NEW! 81,864 3 *
LED Thermometer 177,943 22 *
Light/Dark Detector 276,448 90 *
Simple Colour Organ 112,461 10 *
Strobe Light 244,546 27 *
TRIAC Light Dimmer 457,218 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 313,470 122 *
Electromagnetic Levitator NEW! 114,456 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 861,369 214 *
AC Motor Speed Controller 341,610 29 *
Air Flow Detector 221,563 54 *
Digital Keypad Combination Lock 164,913 20
Low Voltage Alarm 195,250 58 *
Pine Racecar Victory Judge 76,856 1 *
Pulse Width Modulation DC Motor Control 611,872 93
Rain Detector 274,409 112 *
Simple Lie Detector 520,176 323
Simple Polarity Tester Dudley LeRoux 129,944 13 *
Simple Servo Controller 185,635 22 *
Simple Touch Switch NEW! 140,681 5 *
Simple Two Speed Contactor DC Motor Controller 176,413 21 *
Stepper Motor Controller 687,361 120 *
Time Delay Relay 515,009 88
Time Delay Relay II jawaharlal@excite.com 207,249 39 *
Touch Switch 258,213 51 *
Video Activated Relay 95,780 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 147,276 10 *
Water Detector With Sump/Bilge Pump Controller 121,436 18 *
Wire Loop Alarm Alex Meaden 178,559 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 270,543 25 *
12VDC To 120VAC Inverter 1,418,412 688
6V to 12V Converter 452,969 121
Automatic 12V Lead Acid Battery Charger 875,495 246
Automatic Load Sensing Power Switch 134,664 16 *
Car Battery Charger 828,192 159 *
Dual Polarity Power Supply 328,815 84 *
Fixed Voltage Power Supply 278,591 52 *
High Current Power Supply 296,192 65 *
High Voltage High Current Power Supply 222,146 35 *
LASER Power Supply 253,942 28
Portable CD Player Adapter For Car 180,415 12 *
Power Supply 689,642 259 *
Solid State Tesla Coil NEW! 119,002 4
Solid State Tesla Coil/High Voltage Generator 389,763 50
Transformerless Power Supply 419,708 117 *
Voltage Inverter 305,073 51 *
Voltage Inverter II 173,544 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 547,190 182
3 Watt FM Transmitter Rae XL Tkacik 296,813 82 *
50 Watt Amplifier 464,076 74
8 Note Tune Player 115,809 12 *
8 Watt Audio Amp 329,621 67 *
Aircraft Radio Communications Receiver 233,781 49 *
Crystal Radio 136,893 53 *
Digital Volume Control 297,293 47 *
Electronic Stethoscope 274,474 141 *
FET Audio Mixer 306,187 41
FM Transmitter 938,496 419
Guitar Fuzz Effect 206,507 52 *
Microphone Mixer Anatoly I. Shikhatov 215,550 26 *
Mono To Stereo Synthesizer oRbEq 98,992 18 *
One Tube Regenerative Radio NEW! 105,292 4 *
Op Amp Radio 345,350 80 *
Single Chip AM Radio NEW! 80,713 2 *
Single Chip FM Radio NEW! 134,175 1 *
Sound Level Meter 305,055 51 *
Stereo Tube Amplifier Weslee Kinsler 232,967 15 *
Tone Control 269,114 31
Transistor Organ 163,777 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 137,674 27 *
FM Telephone Bug 202,789 57
Phone Busy Indicator 184,910 24 *
Remote Telephone Ringer 93,543 3 *
Ringing Phone Light Flasher 182,596 34 *
Simple Phone Tap Derek Tombrello 331,320 98 *
Telephone Hold Button 98,057 10
Telephone Recorder 183,586 54 *


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All material marked as mine is property of Aaron Cake. You may, however, distribute it as much as you want, with or without credit to me. Just don't claim credit for it yourself, and it would be nice if you included a link back to my page. All other material is property of its authors.