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
Friday, July 03, 2009		 12VDC To 120VAC Inverter419
FM Transmitter265
Yesterday
Thursday, July 02, 2009		 12VDC To 120VAC Inverter529
FM Transmitter378
Of All Time 12VDC To 120VAC Inverter494,542
FM Transmitter366,607

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 76,326 47 *
Car Alarm Arming Horn Beep Canceller NEW! bob 33,170 4 *
Wireless Auto Tachometer 119,576 49

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 51,781 29 *
Parallel (Printer) Port Interface 105,006 66

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 140,391 53 *
3 Channel Spectrum Analyzer 45,742 11
40W Fluorescent Lamp Inverter Bart Milnes 104,224 54 *
Adjustable Strobe Light 91,521 22
Black Light 89,764 26
Colour (Sound) Organ 96,227 25
Fantastic Atom Expander 56,980 21
Flash Slave Trigger 73,046 15 *
Infa-Red Remote Control 211,733 197 *
IR Remote Jammer Carl 81,877 95 *
LASER Transmitter/Receiver 122,649 79
LED Chaser 125,264 71 *
LED Thermometer NEW! 60,760 14 *
Light/Dark Detector 94,571 81 *
Simple Colour Organ 40,482 7 *
Strobe Light 107,203 24 *
TRIAC Light Dimmer 155,299 50

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 135,769 119 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 261,344 179 *
AC Motor Speed Controller NEW! 51,990 12 *
Air Flow Detector 72,682 44 *
Digital Keypad Combination Lock NEW! 38,846 16
Low Voltage Alarm 60,214 45 *
Pine Racecar Victory Judge 23,989 0 *
Pulse Width Modulation DC Motor Control 228,694 83
Rain Detector 96,343 100 *
Simple Lie Detector 192,538 276
Simple Polarity Tester Dudley LeRoux 38,717 11 *
Simple Servo Controller NEW! 30,884 5 *
Simple Two Speed Contactor DC Motor Controller 68,335 18 *
Stepper Motor Controller 246,567 104 *
Time Delay Relay 140,539 59
Time Delay Relay II jawaharlal@excite.com 70,557 34 *
Touch Switch 103,851 46 *
Video Activated Relay 29,070 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 49,998 7 *
Water Detector With Sump/Bilge Pump Controller NEW! 33,925 14 *
Wire Loop Alarm Alex Meaden 63,970 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12VDC To 120VAC Inverter 494,542 611
6V to 12V Converter 137,769 98
Automatic 12V Lead Acid Battery Charger 181,736 162
Automatic Load Sensing Power Switch NEW! 40,197 11 *
Car Battery Charger 317,657 130 *
Dual Polarity Power Supply 101,446 71 *
Fixed Voltage Power Supply 97,146 41 *
High Current Power Supply 104,798 56 *
High Voltage High Current Power Supply 84,435 24 *
LASER Power Supply 86,565 27
Portable CD Player Adapter For Car 67,707 10 *
Power Supply 273,991 243 *
Solid State Tesla Coil/High Voltage Generator 124,075 40
Transformerless Power Supply 141,993 100 *
Voltage Inverter 114,330 45 *
Voltage Inverter II 66,196 16 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 179,377 157
3 Watt FM Transmitter Rae XL Tkacik 94,162 66 *
50 Watt Amplifier 177,517 67
8 Note Tune Player 42,561 10 *
8 Watt Audio Amp 118,691 54 *
Aircraft Radio Communications Receiver NEW! 62,459 33 *
Crystal Radio 48,850 45 *
Digital Volume Control 112,476 37 *
Electronic Stethoscope 80,305 125 *
FET Audio Mixer 91,310 26
FM Transmitter 366,607 350
Guitar Fuzz Effect 64,151 41 *
Microphone Mixer Anatoly I. Shikhatov 71,228 19 *
Mono To Stereo Synthesizer oRbEq 32,021 14 *
Op Amp Radio 109,895 63 *
Sound Level Meter 113,666 36 *
Stereo Tube Amplifier Weslee Kinsler 81,631 10 *
Tone Control 88,983 12
Transistor Organ 55,707 22

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 52,211 24 *
FM Telephone Bug 83,479 47
Phone Busy Indicator 52,580 19 *
Remote Telephone Ringer NEW! 31,749 2 *
Ringing Phone Light Flasher 62,177 24 *
Simple Phone Tap Derek Tombrello 150,264 86 *
Telephone Hold Button 31,388 7
Telephone Recorder 78,826 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.