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
Saturday, July 04, 2009		 12VDC To 120VAC Inverter343
FM Transmitter215
Yesterday
Friday, July 03, 2009		 12VDC To 120VAC Inverter503
FM Transmitter319
Of All Time 12VDC To 120VAC Inverter494,969
FM Transmitter366,876

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 76,373 47 *
Car Alarm Arming Horn Beep Canceller NEW! bob 33,203 4 *
Wireless Auto Tachometer 119,664 49

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 51,808 29 *
Parallel (Printer) Port Interface 105,077 66

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 140,503 53 *
3 Channel Spectrum Analyzer 45,787 11
40W Fluorescent Lamp Inverter Bart Milnes 104,314 54 *
Adjustable Strobe Light 91,584 22
Black Light 89,840 26
Colour (Sound) Organ 96,280 25
Fantastic Atom Expander 57,029 21
Flash Slave Trigger 73,113 15 *
Infa-Red Remote Control 211,923 197 *
IR Remote Jammer Carl 81,937 95 *
LASER Transmitter/Receiver 122,757 79
LED Chaser 125,366 71 *
LED Thermometer NEW! 60,839 14 *
Light/Dark Detector 94,636 81 *
Simple Colour Organ 40,519 7 *
Strobe Light 107,276 24 *
TRIAC Light Dimmer 155,412 50

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 135,847 119 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 261,526 179 *
AC Motor Speed Controller NEW! 52,059 12 *
Air Flow Detector 72,731 44 *
Digital Keypad Combination Lock NEW! 38,882 16
Low Voltage Alarm 60,300 45 *
Pine Racecar Victory Judge 24,004 0 *
Pulse Width Modulation DC Motor Control 228,883 83
Rain Detector 96,423 100 *
Simple Lie Detector 192,668 276
Simple Polarity Tester Dudley LeRoux 38,755 11 *
Simple Servo Controller NEW! 30,913 5 *
Simple Two Speed Contactor DC Motor Controller 68,379 18 *
Stepper Motor Controller 246,748 104 *
Time Delay Relay 140,658 59
Time Delay Relay II jawaharlal@excite.com 70,620 34 *
Touch Switch 103,929 46 *
Video Activated Relay 29,089 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 50,033 7 *
Water Detector With Sump/Bilge Pump Controller NEW! 33,960 14 *
Wire Loop Alarm Alex Meaden 64,008 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12VDC To 120VAC Inverter 494,969 611
6V to 12V Converter 137,902 98
Automatic 12V Lead Acid Battery Charger 181,951 162
Automatic Load Sensing Power Switch NEW! 40,240 11 *
Car Battery Charger 317,887 130 *
Dual Polarity Power Supply 101,535 71 *
Fixed Voltage Power Supply 97,212 41 *
High Current Power Supply 104,879 56 *
High Voltage High Current Power Supply 84,495 24 *
LASER Power Supply 86,636 27
Portable CD Player Adapter For Car 67,757 10 *
Power Supply 274,149 243 *
Solid State Tesla Coil/High Voltage Generator 124,168 40
Transformerless Power Supply 142,095 100 *
Voltage Inverter 114,403 45 *
Voltage Inverter II 66,247 16 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 179,540 157
3 Watt FM Transmitter Rae XL Tkacik 94,240 66 *
50 Watt Amplifier 177,688 67
8 Note Tune Player 42,599 10 *
8 Watt Audio Amp 118,790 54 *
Aircraft Radio Communications Receiver NEW! 62,536 33 *
Crystal Radio 48,884 45 *
Digital Volume Control 112,577 37 *
Electronic Stethoscope 80,373 125 *
FET Audio Mixer 91,395 26
FM Transmitter 366,876 350
Guitar Fuzz Effect 64,210 41 *
Microphone Mixer Anatoly I. Shikhatov 71,300 19 *
Mono To Stereo Synthesizer oRbEq 32,040 14 *
Op Amp Radio 109,981 63 *
Sound Level Meter 113,744 36 *
Stereo Tube Amplifier Weslee Kinsler 81,706 10 *
Tone Control 89,067 12
Transistor Organ 55,743 22

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 52,255 24 *
FM Telephone Bug 83,539 47
Phone Busy Indicator 52,612 19 *
Remote Telephone Ringer NEW! 31,784 2 *
Ringing Phone Light Flasher 62,216 24 *
Simple Phone Tap Derek Tombrello 150,357 86 *
Telephone Hold Button 31,417 7
Telephone Recorder 78,887 50 *

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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.