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, July 23, 2016
Automatic 12V Lead Acid Battery Charger58
12VDC To 120VAC Inverter48
Yesterday
Friday, July 22, 2016
12VDC To 120VAC Inverter92
Automatic 12V Lead Acid Battery Charger91
Of All Time 12VDC To 120VAC Inverter1,348,450
FM Transmitter901,475

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 178,991 61 *
Car Alarm Arming Horn Beep Canceller bob 92,900 6 *
Wireless Auto Tachometer 284,755 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 122,877 29 *
Parallel (Printer) Port Interface 224,893 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 375,250 62 *
3 Channel Spectrum Analyzer 169,721 20
40W Fluorescent Lamp Inverter Bart Milnes 276,447 60 *
Adjustable Strobe Light 247,515 36
Black Light 210,374 29
Colour (Sound) Organ 232,997 35
Electronic Dice NEW! 138,518 8 *
Fantastic Atom Expander 147,767 25
Flash Slave Trigger 170,360 17 *
Infa-Red Remote Control 562,441 216 *
IR Remote Extender NEW! 79,394 2 *
IR Remote Jammer Carl 210,819 110 *
IR Remote Switch NEW! 110,387 9 *
LASER Transmitter/Receiver 345,913 91
LED Chaser 389,905 83 *
LED Metronome NEW! 71,439 3 *
LED Thermometer 164,113 22 *
Light/Dark Detector 257,165 89 *
Simple Colour Organ 101,626 10 *
Strobe Light 231,385 27 *
TRIAC Light Dimmer 436,284 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 299,772 122 *
Electromagnetic Levitator NEW! 99,609 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 828,922 214 *
AC Motor Speed Controller 315,442 29 *
Air Flow Detector 205,734 54 *
Digital Keypad Combination Lock 151,718 20
Low Voltage Alarm 177,638 58 *
Pine Racecar Victory Judge 66,744 1 *
Pulse Width Modulation DC Motor Control 588,048 93
Rain Detector 258,898 112 *
Simple Lie Detector 497,501 323
Simple Polarity Tester Dudley LeRoux 115,706 13 *
Simple Servo Controller 171,584 22 *
Simple Touch Switch NEW! 126,910 5 *
Simple Two Speed Contactor DC Motor Controller 164,221 21 *
Stepper Motor Controller 647,317 120 *
Time Delay Relay 488,485 86
Time Delay Relay II jawaharlal@excite.com 191,823 39 *
Touch Switch 243,165 51 *
Video Activated Relay 83,504 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 134,296 10 *
Water Detector With Sump/Bilge Pump Controller 109,967 18 *
Wire Loop Alarm Alex Meaden 165,738 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 244,838 25 *
12VDC To 120VAC Inverter 1,348,450 686
6V to 12V Converter 421,588 121
Automatic 12V Lead Acid Battery Charger 828,398 243
Automatic Load Sensing Power Switch 120,661 15 *
Car Battery Charger 790,559 159 *
Dual Polarity Power Supply 283,588 84 *
Fixed Voltage Power Supply 263,032 52 *
High Current Power Supply 278,658 64 *
High Voltage High Current Power Supply 208,407 35 *
LASER Power Supply 235,503 28
Portable CD Player Adapter For Car 164,478 12 *
Power Supply 657,590 259 *
Solid State Tesla Coil NEW! 104,044 3
Solid State Tesla Coil/High Voltage Generator 360,757 49
Transformerless Power Supply 400,331 116 *
Voltage Inverter 286,899 51 *
Voltage Inverter II 163,767 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 522,376 182
3 Watt FM Transmitter Rae XL Tkacik 278,572 81 *
50 Watt Amplifier 438,061 74
8 Note Tune Player 104,935 12 *
8 Watt Audio Amp 308,447 67 *
Aircraft Radio Communications Receiver 214,564 49 *
Crystal Radio 125,317 53 *
Digital Volume Control 280,201 46 *
Electronic Stethoscope 253,507 141 *
FET Audio Mixer 283,874 40
FM Transmitter 901,475 418
Guitar Fuzz Effect 189,890 52 *
Microphone Mixer Anatoly I. Shikhatov 198,072 25 *
Mono To Stereo Synthesizer oRbEq 87,427 17 *
One Tube Regenerative Radio NEW! 89,680 4 *
Op Amp Radio 321,903 80 *
Single Chip AM Radio NEW! 69,995 2 *
Single Chip FM Radio NEW! 116,891 0 *
Sound Level Meter 289,182 51 *
Stereo Tube Amplifier Weslee Kinsler 219,453 15 *
Tone Control 250,551 31
Transistor Organ 149,933 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 128,155 27 *
FM Telephone Bug 191,127 57
Phone Busy Indicator 163,576 24 *
Remote Telephone Ringer 84,775 3 *
Ringing Phone Light Flasher 166,863 33 *
Simple Phone Tap Derek Tombrello 317,950 98 *
Telephone Hold Button 86,890 9
Telephone Recorder 171,354 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.