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 Inverter492
FM Transmitter316
Yesterday
Thursday, July 02, 2009		 12VDC To 120VAC Inverter529
FM Transmitter378
Of All Time 12VDC To 120VAC Inverter494,615
FM Transmitter366,658

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 76,329 47 *
Car Alarm Arming Horn Beep Canceller NEW! bob 33,174 4 *
Wireless Auto Tachometer 119,591 49

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 51,787 29 *
Parallel (Printer) Port Interface 105,018 66

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 140,404 53 *
3 Channel Spectrum Analyzer 45,748 11
40W Fluorescent Lamp Inverter Bart Milnes 104,235 54 *
Adjustable Strobe Light 91,533 22
Black Light 89,770 26
Colour (Sound) Organ 96,237 25
Fantastic Atom Expander 56,990 21
Flash Slave Trigger 73,047 15 *
Infa-Red Remote Control 211,754 197 *
IR Remote Jammer Carl 81,887 95 *
LASER Transmitter/Receiver 122,671 79
LED Chaser 125,281 71 *
LED Thermometer NEW! 60,771 14 *
Light/Dark Detector 94,581 81 *
Simple Colour Organ 40,490 7 *
Strobe Light 107,215 24 *
TRIAC Light Dimmer 155,311 50

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 135,788 119 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 261,370 179 *
AC Motor Speed Controller NEW! 52,003 12 *
Air Flow Detector 72,690 44 *
Digital Keypad Combination Lock NEW! 38,852 16
Low Voltage Alarm 60,219 45 *
Pine Racecar Victory Judge 23,992 0 *
Pulse Width Modulation DC Motor Control 228,733 83
Rain Detector 96,355 100 *
Simple Lie Detector 192,552 276
Simple Polarity Tester Dudley LeRoux 38,724 11 *
Simple Servo Controller NEW! 30,885 5 *
Simple Two Speed Contactor DC Motor Controller 68,345 18 *
Stepper Motor Controller 246,599 104 *
Time Delay Relay 140,554 59
Time Delay Relay II jawaharlal@excite.com 70,568 34 *
Touch Switch 103,863 46 *
Video Activated Relay 29,076 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 50,005 7 *
Water Detector With Sump/Bilge Pump Controller NEW! 33,932 14 *
Wire Loop Alarm Alex Meaden 63,977 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12VDC To 120VAC Inverter 494,615 611
6V to 12V Converter 137,787 98
Automatic 12V Lead Acid Battery Charger 181,767 162
Automatic Load Sensing Power Switch NEW! 40,201 11 *
Car Battery Charger 317,693 130 *
Dual Polarity Power Supply 101,465 71 *
Fixed Voltage Power Supply 97,155 41 *
High Current Power Supply 104,810 56 *
High Voltage High Current Power Supply 84,439 24 *
LASER Power Supply 86,581 27
Portable CD Player Adapter For Car 67,710 10 *
Power Supply 274,018 243 *
Solid State Tesla Coil/High Voltage Generator 124,090 40
Transformerless Power Supply 142,006 100 *
Voltage Inverter 114,343 45 *
Voltage Inverter II 66,204 16 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 179,404 157
3 Watt FM Transmitter Rae XL Tkacik 94,177 66 *
50 Watt Amplifier 177,544 67
8 Note Tune Player 42,565 10 *
8 Watt Audio Amp 118,713 54 *
Aircraft Radio Communications Receiver NEW! 62,475 33 *
Crystal Radio 48,856 45 *
Digital Volume Control 112,489 37 *
Electronic Stethoscope 80,319 125 *
FET Audio Mixer 91,324 26
FM Transmitter 366,658 350
Guitar Fuzz Effect 64,157 41 *
Microphone Mixer Anatoly I. Shikhatov 71,237 19 *
Mono To Stereo Synthesizer oRbEq 32,026 14 *
Op Amp Radio 109,909 63 *
Sound Level Meter 113,673 36 *
Stereo Tube Amplifier Weslee Kinsler 81,644 10 *
Tone Control 88,993 12
Transistor Organ 55,714 22

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 52,221 24 *
FM Telephone Bug 83,485 47
Phone Busy Indicator 52,587 19 *
Remote Telephone Ringer NEW! 31,753 2 *
Ringing Phone Light Flasher 62,184 24 *
Simple Phone Tap Derek Tombrello 150,280 86 *
Telephone Hold Button 31,396 7
Telephone Recorder 78,835 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.