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
Wednesday, March 20, 2019
12VDC Fluorescent Lamp Driver28
AC Motor Speed Controller23
Yesterday
Tuesday, March 19, 2019
12VDC To 120VAC Inverter86
FM Transmitter70
Of All Time 12VDC To 120VAC Inverter1,431,701
FM Transmitter947,430

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 196,733 61 *
Car Alarm Arming Horn Beep Canceller bob 107,905 6 *
Wireless Auto Tachometer 305,216 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 136,931 29 *
Parallel (Printer) Port Interface 244,663 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 401,425 63 *
3 Channel Spectrum Analyzer 192,008 20
40W Fluorescent Lamp Inverter Bart Milnes 296,627 60 *
Adjustable Strobe Light 271,678 36
Black Light 233,233 29
Colour (Sound) Organ 254,440 36
Electronic Dice NEW! 157,036 10 *
Fantastic Atom Expander 168,924 25
Flash Slave Trigger 188,084 18 *
Infa-Red Remote Control 592,727 216 *
IR Remote Extender NEW! 97,921 2 *
IR Remote Jammer Carl 231,615 110 *
IR Remote Switch NEW! 127,850 9 *
LASER Transmitter/Receiver 371,602 92
LED Chaser 413,865 83 *
LED Metronome NEW! 83,688 3 *
LED Thermometer 181,585 22 *
Light/Dark Detector 279,602 90 *
Simple Colour Organ 115,940 10 *
Strobe Light 248,678 27 *
TRIAC Light Dimmer 462,502 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 319,532 122 *
Electromagnetic Levitator NEW! 118,742 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 870,990 214 *
AC Motor Speed Controller 349,429 29 *
Air Flow Detector 225,847 54 *
Digital Keypad Combination Lock 169,902 20
Low Voltage Alarm 199,773 58 *
Pine Racecar Victory Judge 80,511 1 *
Pulse Width Modulation DC Motor Control 616,540 93
Rain Detector 279,346 112 *
Simple Lie Detector 527,153 323
Simple Polarity Tester Dudley LeRoux 134,386 13 *
Simple Servo Controller 192,002 22 *
Simple Touch Switch NEW! 145,029 5 *
Simple Two Speed Contactor DC Motor Controller 179,554 21 *
Stepper Motor Controller 700,779 120 *
Time Delay Relay 521,229 88
Time Delay Relay II jawaharlal@excite.com 211,794 39 *
Touch Switch 262,354 51 *
Video Activated Relay 99,447 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 152,393 10 *
Water Detector With Sump/Bilge Pump Controller 125,001 18 *
Wire Loop Alarm Alex Meaden 181,875 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 277,904 25 *
12VDC To 120VAC Inverter 1,431,701 688
6V to 12V Converter 460,381 121
Automatic 12V Lead Acid Battery Charger 884,451 246
Automatic Load Sensing Power Switch 138,430 16 *
Car Battery Charger 837,842 159 *
Dual Polarity Power Supply 345,141 84 *
Fixed Voltage Power Supply 282,572 52 *
High Current Power Supply 301,757 65 *
High Voltage High Current Power Supply 226,079 35 *
LASER Power Supply 261,255 28
Portable CD Player Adapter For Car 184,314 12 *
Power Supply 697,436 259 *
Solid State Tesla Coil NEW! 122,706 4
Solid State Tesla Coil/High Voltage Generator 398,336 50
Transformerless Power Supply 424,869 117 *
Voltage Inverter 307,973 51 *
Voltage Inverter II 176,633 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 552,258 182
3 Watt FM Transmitter Rae XL Tkacik 301,375 82 *
50 Watt Amplifier 471,825 74
8 Note Tune Player 118,703 12 *
8 Watt Audio Amp 336,266 67 *
Aircraft Radio Communications Receiver 239,874 49 *
Crystal Radio 140,414 53 *
Digital Volume Control 301,934 47 *
Electronic Stethoscope 279,580 141 *
FET Audio Mixer 311,032 41
FM Transmitter 947,430 419
Guitar Fuzz Effect 213,186 52 *
Microphone Mixer Anatoly I. Shikhatov 220,270 26 *
Mono To Stereo Synthesizer oRbEq 104,362 18 *
One Tube Regenerative Radio NEW! 109,699 4 *
Op Amp Radio 350,346 80 *
Single Chip AM Radio NEW! 82,903 2 *
Single Chip FM Radio NEW! 140,061 1 *
Sound Level Meter 310,508 51 *
Stereo Tube Amplifier Weslee Kinsler 238,226 15 *
Tone Control 274,921 31
Transistor Organ 168,274 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 140,651 27 *
FM Telephone Bug 209,626 57
Phone Busy Indicator 189,424 24 *
Remote Telephone Ringer 96,354 3 *
Ringing Phone Light Flasher 186,268 34 *
Simple Phone Tap Derek Tombrello 335,624 98 *
Telephone Hold Button 103,293 10
Telephone Recorder 187,338 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.