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, April 19, 2014
12VDC To 120VAC Inverter53
Automatic 12V Lead Acid Battery Charger50
Yesterday
Friday, April 18, 2014
12VDC To 120VAC Inverter257
Automatic 12V Lead Acid Battery Charger238
Of All Time 12VDC To 120VAC Inverter1,204,511
FM Transmitter813,547

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 160,254 60 *
Car Alarm Arming Horn Beep Canceller bob 81,291 6 *
Wireless Auto Tachometer 247,507 57

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 106,496 29 *
Parallel (Printer) Port Interface 206,686 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 340,953 61 *
3 Channel Spectrum Analyzer 141,610 19
40W Fluorescent Lamp Inverter Bart Milnes 249,249 60 *
Adjustable Strobe Light 220,005 36
Black Light 187,427 29
Colour (Sound) Organ 210,015 34
Electronic Dice NEW! 115,658 8 *
Fantastic Atom Expander 126,824 24
Flash Slave Trigger 153,269 17 *
Infa-Red Remote Control 488,883 216 *
IR Remote Extender NEW! 61,420 2 *
IR Remote Jammer Carl 187,922 109 *
IR Remote Switch NEW! 89,917 9 *
LASER Transmitter/Receiver 309,310 91
LED Chaser 336,894 83 *
LED Metronome NEW! 58,163 3 *
LED Thermometer 146,573 22 *
Light/Dark Detector 227,795 89 *
Simple Colour Organ 88,300 10 *
Strobe Light 206,684 27 *
TRIAC Light Dimmer 379,980 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 273,629 122 *
Electromagnetic Levitator NEW! 80,928 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 707,862 212 *
AC Motor Speed Controller 267,470 28 *
Air Flow Detector 175,071 54 *
Digital Keypad Combination Lock 128,656 20
Low Voltage Alarm 154,857 58 *
Pine Racecar Victory Judge 57,087 1 *
Pulse Width Modulation DC Motor Control 531,694 92
Rain Detector 226,799 110 *
Simple Lie Detector 445,203 319
Simple Polarity Tester Dudley LeRoux 96,474 13 *
Simple Servo Controller 143,853 22 *
Simple Touch Switch NEW! 101,556 5 *
Simple Two Speed Contactor DC Motor Controller 144,334 21 *
Stepper Motor Controller 585,212 120 *
Time Delay Relay 426,684 85
Time Delay Relay II jawaharlal@excite.com 170,714 39 *
Touch Switch 219,901 51 *
Video Activated Relay 68,666 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 115,930 9 *
Water Detector With Sump/Bilge Pump Controller 95,631 18 *
Wire Loop Alarm Alex Meaden 148,242 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 190,801 23 *
12VDC To 120VAC Inverter 1,204,511 682
6V to 12V Converter 366,498 121
Automatic 12V Lead Acid Battery Charger 695,475 236
Automatic Load Sensing Power Switch 104,095 14 *
Car Battery Charger 728,644 158 *
Dual Polarity Power Supply 251,465 84 *
Fixed Voltage Power Supply 233,275 52 *
High Current Power Supply 241,153 64 *
High Voltage High Current Power Supply 186,834 34 *
LASER Power Supply 206,984 28
Portable CD Player Adapter For Car 145,756 12 *
Power Supply 592,531 258 *
Solid State Tesla Coil NEW! 82,809 2
Solid State Tesla Coil/High Voltage Generator 310,466 49
Transformerless Power Supply 358,354 116 *
Voltage Inverter 256,526 51 *
Voltage Inverter II 144,435 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 449,767 182
3 Watt FM Transmitter Rae XL Tkacik 244,614 77 *
50 Watt Amplifier 389,689 73
8 Note Tune Player 91,094 12 *
8 Watt Audio Amp 268,459 63 *
Aircraft Radio Communications Receiver 180,062 48 *
Crystal Radio 108,899 53 *
Digital Volume Control 255,606 46 *
Electronic Stethoscope 200,937 138 *
FET Audio Mixer 229,417 40
FM Transmitter 813,547 414
Guitar Fuzz Effect 162,833 51 *
Microphone Mixer Anatoly I. Shikhatov 172,951 25 *
Mono To Stereo Synthesizer oRbEq 69,272 16 *
One Tube Regenerative Radio NEW! 65,502 4 *
Op Amp Radio 273,965 80 *
Single Chip AM Radio NEW! 46,566 2 *
Single Chip FM Radio NEW! 83,294 0 *
Sound Level Meter 259,085 50 *
Stereo Tube Amplifier Weslee Kinsler 188,414 15 *
Tone Control 222,294 29
Transistor Organ 128,944 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 115,839 27 *
FM Telephone Bug 172,161 57
Phone Busy Indicator 128,786 22 *
Remote Telephone Ringer 74,453 3 *
Ringing Phone Light Flasher 145,426 32 *
Simple Phone Tap Derek Tombrello 292,365 98 *
Telephone Hold Button 72,255 9
Telephone Recorder 154,803 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.