Electronic Circuits

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 17
Major Projects 1
Other 20
Power Supply 16
Sound/Radio 19
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
Sunday, September 07, 2008		 12VDC To 120VAC Inverter113
7 Segment LED Counter67
Yesterday
Saturday, September 06, 2008		 12VDC To 120VAC Inverter558
Car Battery Charger286
Of All Time 12VDC To 120VAC Inverter328,848
FM Transmitter256,623

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 55,205 43 *
Car Alarm Arming Horn Beep Canceller NEW! bob 17,458 3 *
Wireless Auto Tachometer 81,486 45

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 35,891 25 *
Parallel (Printer) Port Interface 72,063 61

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 90,556 44 *
3 Channel Spectrum Analyzer 29,853 10
40W Fluorescent Lamp Inverter Bart Milnes 66,949 41 *
Adjustable Strobe Light 61,910 18
Black Light 61,791 24
Colour (Sound) Organ 64,104 21
Fantastic Atom Expander 37,607 16
Flash Slave Trigger 48,115 11 *
Infa-Red Remote Control 144,513 183 *
IR Remote Jammer Carl 54,140 81 *
LASER Transmitter/Receiver 81,689 77
LED Chaser 80,002 65 *
LED Thermometer NEW! 31,309 8 *
Light/Dark Detector 61,260 73 *
Simple Colour Organ 21,872 6 *
Strobe Light 74,950 19 *
TRIAC Light Dimmer 101,660 46

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 94,748 112 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 159,910 160 *
AC Motor Speed Controller NEW! 21,853 6 *
Air Flow Detector 48,220 39 *
Digital Keypad Combination Lock NEW! 18,595 10
Low Voltage Alarm 38,286 41 *
Pine Racecar Victory Judge 15,554 0 *
Pulse Width Modulation DC Motor Control 147,731 74
Rain Detector 62,858 84 *
Simple Lie Detector 124,706 245
Simple Polarity Tester Dudley LeRoux 25,176 11 *
Simple Servo Controller NEW! 14,470 2 *
Simple Two Speed Contactor DC Motor Controller 46,027 17 *
Stepper Motor Controller 159,153 89 *
Time Delay Relay 87,252 44
Time Delay Relay II jawaharlal@excite.com 45,416 27 *
Touch Switch 66,405 38 *
Video Activated Relay 19,373 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 33,176 4 *
Water Detector With Sump/Bilge Pump Controller NEW! 16,654 10 *
Wire Loop Alarm Alex Meaden 41,807 24 *

Power Supply

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Circuit Author Views Rank Comments Marker
12VDC To 120VAC Inverter 328,848 563
6V to 12V Converter 89,825 86
Automatic 12V Lead Acid Battery Charger 109,558 132
Automatic Load Sensing Power Switch NEW! 20,100 8 *
Car Battery Charger 208,885 114 *
Dual Polarity Power Supply 63,724 65 *
Fixed Voltage Power Supply 53,417 38 *
High Current Power Supply 69,467 49 *
High Voltage High Current Power Supply 55,508 18 *
LASER Power Supply 56,578 23
Portable CD Player Adapter For Car 45,391 8 *
Power Supply 181,727 228 *
Solid State Tesla Coil/High Voltage Generator 81,350 32
Transformerless Power Supply 93,733 91 *
Voltage Inverter 77,995 42 *
Voltage Inverter II 43,927 13 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 117,479 136
3 Watt FM Transmitter Rae XL Tkacik 61,044 62 *
50 Watt Amplifier 118,385 64
8 Note Tune Player 27,897 8 *
8 Watt Audio Amp 78,046 51 *
Aircraft Radio Communications Receiver NEW! 30,180 22 *
Crystal Radio 32,200 41 *
Digital Volume Control 73,718 35 *
Electronic Stethoscope 53,533 115 *
FET Audio Mixer 59,997 21
FM Transmitter 256,623 326
Guitar Fuzz Effect 42,141 32 *
Microphone Mixer Anatoly I. Shikhatov 45,319 18 *
Mono To Stereo Synthesizer oRbEq 22,053 12 *
Op Amp Radio 73,115 50 *
Sound Level Meter 75,146 31 *
Stereo Tube Amplifier Weslee Kinsler 52,418 9 *
Tone Control 56,966 10
Transistor Organ 34,805 15

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 34,603 22 *
FM Telephone Bug 56,336 41
Phone Busy Indicator 37,712 14 *
Remote Telephone Ringer NEW! 15,603 1 *
Ringing Phone Light Flasher 41,921 20 *
Simple Phone Tap Derek Tombrello 100,153 72 *
Telephone Hold Button 20,702 7
Telephone Recorder 55,919 49 *

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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.