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
Monday, February 27, 2017
Automatic 12V Lead Acid Battery Charger56
12VDC To 120VAC Inverter51
Yesterday
Sunday, February 26, 2017
12VDC To 120VAC Inverter78
Automatic 12V Lead Acid Battery Charger54
Of All Time 12VDC To 120VAC Inverter1,369,998
FM Transmitter913,434

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 182,033 61 *
Car Alarm Arming Horn Beep Canceller bob 95,094 6 *
Wireless Auto Tachometer 288,704 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 125,939 29 *
Parallel (Printer) Port Interface 228,136 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 381,426 62 *
3 Channel Spectrum Analyzer 174,976 20
40W Fluorescent Lamp Inverter Bart Milnes 280,974 60 *
Adjustable Strobe Light 252,610 36
Black Light 214,987 29
Colour (Sound) Organ 237,621 36
Electronic Dice NEW! 143,319 9 *
Fantastic Atom Expander 152,378 25
Flash Slave Trigger 173,879 17 *
Infa-Red Remote Control 568,950 216 *
IR Remote Extender NEW! 82,946 2 *
IR Remote Jammer Carl 215,456 110 *
IR Remote Switch NEW! 113,639 9 *
LASER Transmitter/Receiver 352,599 92
LED Chaser 395,343 83 *
LED Metronome NEW! 74,293 3 *
LED Thermometer 167,468 22 *
Light/Dark Detector 265,032 89 *
Simple Colour Organ 104,347 10 *
Strobe Light 234,954 27 *
TRIAC Light Dimmer 442,612 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 303,575 122 *
Electromagnetic Levitator NEW! 103,782 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 839,615 214 *
AC Motor Speed Controller 323,772 29 *
Air Flow Detector 210,646 54 *
Digital Keypad Combination Lock 155,397 20
Low Voltage Alarm 182,730 58 *
Pine Racecar Victory Judge 69,131 1 *
Pulse Width Modulation DC Motor Control 596,434 93
Rain Detector 263,261 112 *
Simple Lie Detector 504,689 323
Simple Polarity Tester Dudley LeRoux 119,736 13 *
Simple Servo Controller 175,633 22 *
Simple Touch Switch NEW! 130,901 5 *
Simple Two Speed Contactor DC Motor Controller 167,818 21 *
Stepper Motor Controller 657,425 120 *
Time Delay Relay 496,907 88
Time Delay Relay II jawaharlal@excite.com 195,669 39 *
Touch Switch 246,988 51 *
Video Activated Relay 86,599 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 138,030 10 *
Water Detector With Sump/Bilge Pump Controller 112,380 18 *
Wire Loop Alarm Alex Meaden 169,399 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 253,745 25 *
12VDC To 120VAC Inverter 1,369,998 687
6V to 12V Converter 430,820 121
Automatic 12V Lead Acid Battery Charger 845,489 246
Automatic Load Sensing Power Switch 124,620 15 *
Car Battery Charger 801,790 159 *
Dual Polarity Power Supply 289,654 84 *
Fixed Voltage Power Supply 268,416 52 *
High Current Power Supply 284,472 64 *
High Voltage High Current Power Supply 212,898 35 *
LASER Power Supply 241,575 28
Portable CD Player Adapter For Car 169,305 12 *
Power Supply 668,352 259 *
Solid State Tesla Coil NEW! 108,013 3
Solid State Tesla Coil/High Voltage Generator 370,324 50
Transformerless Power Supply 407,111 117 *
Voltage Inverter 292,858 51 *
Voltage Inverter II 166,561 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 530,225 182
3 Watt FM Transmitter Rae XL Tkacik 284,415 81 *
50 Watt Amplifier 446,046 74
8 Note Tune Player 108,174 12 *
8 Watt Audio Amp 315,437 67 *
Aircraft Radio Communications Receiver 220,073 49 *
Crystal Radio 128,844 53 *
Digital Volume Control 285,335 47 *
Electronic Stethoscope 259,720 141 *
FET Audio Mixer 289,875 40
FM Transmitter 913,434 418
Guitar Fuzz Effect 194,846 52 *
Microphone Mixer Anatoly I. Shikhatov 203,207 26 *
Mono To Stereo Synthesizer oRbEq 90,699 18 *
One Tube Regenerative Radio NEW! 94,441 4 *
Op Amp Radio 328,764 80 *
Single Chip AM Radio NEW! 72,905 2 *
Single Chip FM Radio NEW! 122,051 1 *
Sound Level Meter 293,902 51 *
Stereo Tube Amplifier Weslee Kinsler 223,133 15 *
Tone Control 255,814 31
Transistor Organ 153,845 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 130,685 27 *
FM Telephone Bug 194,176 57
Phone Busy Indicator 170,745 24 *
Remote Telephone Ringer 87,119 3 *
Ringing Phone Light Flasher 171,336 33 *
Simple Phone Tap Derek Tombrello 321,826 98 *
Telephone Hold Button 90,412 9
Telephone Recorder 174,523 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.