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
Tuesday, May 17, 2022
AC Motor Speed Controller9
Stereo Tube Amplifier9
Yesterday
Monday, May 16, 2022
12VDC To 120VAC Inverter37
Stepper Motor Controller34
Of All Time 12VDC To 120VAC Inverter1,501,036
FM Transmitter991,429

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 221,200 61 *
Car Alarm Arming Horn Beep Canceller bob 131,408 6 *
Wireless Auto Tachometer 336,164 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 154,977 29 *
Parallel (Printer) Port Interface 277,641 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 439,616 63 *
3 Channel Spectrum Analyzer 214,486 20
40W Fluorescent Lamp Inverter Bart Milnes 323,835 60 *
Adjustable Strobe Light 301,383 36
Black Light 269,370 29
Colour (Sound) Organ 283,035 36
Electronic Dice NEW! 182,870 10 *
Fantastic Atom Expander 197,506 25
Flash Slave Trigger 214,272 18 *
Infa-Red Remote Control 626,255 216 *
IR Remote Extender NEW! 125,993 2 *
IR Remote Jammer Carl 258,172 110 *
IR Remote Switch NEW! 152,381 9 *
LASER Transmitter/Receiver 405,263 92
LED Chaser 437,698 83 *
LED Metronome NEW! 94,684 3 *
LED Thermometer 201,385 22 *
Light/Dark Detector 300,684 90 *
Simple Colour Organ 132,727 10 *
Strobe Light 268,937 27 *
TRIAC Light Dimmer 543,116 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 352,686 122 *
Electromagnetic Levitator NEW! 138,659 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 913,032 214 *
AC Motor Speed Controller 380,007 29 *
Air Flow Detector 246,011 54 *
Digital Keypad Combination Lock 191,288 20
Low Voltage Alarm 223,464 58 *
Pine Racecar Victory Judge 98,344 1 *
Pulse Width Modulation DC Motor Control 641,134 94
Rain Detector 298,906 112 *
Simple Lie Detector 553,547 323
Simple Polarity Tester Dudley LeRoux 159,695 13 *
Simple Servo Controller 215,371 22 *
Simple Touch Switch NEW! 163,927 5 *
Simple Two Speed Contactor DC Motor Controller 199,236 21 *
Stepper Motor Controller 735,095 120 *
Time Delay Relay 548,733 88
Time Delay Relay II jawaharlal@excite.com 239,210 39 *
Touch Switch 283,647 51 *
Video Activated Relay 116,684 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 174,091 10 *
Water Detector With Sump/Bilge Pump Controller 147,296 18 *
Wire Loop Alarm Alex Meaden 200,427 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 305,990 25 *
12VDC To 120VAC Inverter 1,501,036 689
6V to 12V Converter 517,524 121
Automatic 12V Lead Acid Battery Charger 925,937 248
Automatic Load Sensing Power Switch 161,140 16 *
Car Battery Charger 873,204 159 *
Dual Polarity Power Supply 363,748 84 *
Fixed Voltage Power Supply 304,106 52 *
High Current Power Supply 329,444 66 *
High Voltage High Current Power Supply 246,518 35 *
LASER Power Supply 288,260 28
Portable CD Player Adapter For Car 205,932 12 *
Power Supply 729,024 259 *
Solid State Tesla Coil NEW! 139,121 4
Solid State Tesla Coil/High Voltage Generator 433,850 51
Transformerless Power Supply 455,836 117 *
Voltage Inverter 330,078 51 *
Voltage Inverter II 195,496 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 577,937 182
3 Watt FM Transmitter Rae XL Tkacik 326,403 83 *
50 Watt Amplifier 499,425 74
8 Note Tune Player 135,816 12 *
8 Watt Audio Amp 364,293 67 *
Aircraft Radio Communications Receiver 269,337 49 *
Crystal Radio 153,748 53 *
Digital Volume Control 325,975 47 *
Electronic Stethoscope 306,839 142 *
FET Audio Mixer 336,126 41
FM Transmitter 991,429 420
Guitar Fuzz Effect 239,208 54 *
Microphone Mixer Anatoly I. Shikhatov 243,953 26 *
Mono To Stereo Synthesizer oRbEq 127,061 18 *
One Tube Regenerative Radio NEW! 129,829 4 *
Op Amp Radio 378,493 80 *
Single Chip AM Radio NEW! 94,566 2 *
Single Chip FM Radio NEW! 164,786 1 *
Sound Level Meter 334,573 51 *
Stereo Tube Amplifier Weslee Kinsler 261,398 15 *
Tone Control 302,517 31
Transistor Organ 192,404 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 158,729 27 *
FM Telephone Bug 230,838 57
Phone Busy Indicator 208,920 24 *
Remote Telephone Ringer 113,736 3 *
Ringing Phone Light Flasher 209,892 35 *
Simple Phone Tap Derek Tombrello 378,315 98 *
Telephone Hold Button 123,829 10
Telephone Recorder 211,242 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.