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 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, November 07, 2009		 12VDC To 120VAC Inverter412
Car Battery Charger332
Yesterday
Friday, November 06, 2009		 12VDC To 120VAC Inverter577
Car Battery Charger416
Of All Time 12VDC To 120VAC Inverter559,825
FM Transmitter411,326

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 85,214 48 *
Car Alarm Arming Horn Beep Canceller bob 38,672 5 *
Wireless Auto Tachometer 134,875 52

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 57,870 29 *
Parallel (Printer) Port Interface 116,579 68

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 161,150 55 *
3 Channel Spectrum Analyzer 52,610 11
40W Fluorescent Lamp Inverter Bart Milnes 119,486 56 *
Adjustable Strobe Light 103,328 25
Black Light 100,679 27
Colour (Sound) Organ 108,002 26
Electronic Dice NEW! 3,643 1 *
Fantastic Atom Expander 64,220 22
Flash Slave Trigger 82,152 15 *
Infa-Red Remote Control 239,386 203 *
IR Remote Extender NEW! 2,179 0 *
IR Remote Jammer Carl 92,186 97 *
IR Remote Switch NEW! 2,735 0 *
LASER Transmitter/Receiver 138,452 83
LED Chaser 144,349 77 *
LED Metronome NEW! 2,254 0 *
LED Thermometer 71,461 14 *
Light/Dark Detector 108,105 82 *
Simple Colour Organ 46,235 7 *
Strobe Light 119,264 26 *
TRIAC Light Dimmer 176,475 50

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 152,291 119 *
Electromagnetic Levitator NEW! 3,535 0 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 302,958 188 *
AC Motor Speed Controller 66,777 17 *
Air Flow Detector 82,418 45 *
Digital Keypad Combination Lock 46,942 18
Low Voltage Alarm 69,202 48 *
Pine Racecar Victory Judge 27,178 0 *
Pulse Width Modulation DC Motor Control 260,444 87
Rain Detector 110,480 101 *
Simple Lie Detector 217,894 282
Simple Polarity Tester Dudley LeRoux 44,038 11 *
Simple Servo Controller 38,070 8 *
Simple Touch Switch NEW! 3,263 0 *
Simple Two Speed Contactor DC Motor Controller 76,822 19 *
Stepper Motor Controller 279,493 104 *
Time Delay Relay 165,419 65
Time Delay Relay II jawaharlal@excite.com 80,922 34 *
Touch Switch 118,123 47 *
Video Activated Relay 32,819 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 55,734 7 *
Water Detector With Sump/Bilge Pump Controller 40,640 16 *
Wire Loop Alarm Alex Meaden 72,772 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 4,072 0 *
12VDC To 120VAC Inverter 559,825 634
6V to 12V Converter 158,570 106
Automatic 12V Lead Acid Battery Charger 213,182 174
Automatic Load Sensing Power Switch 47,147 11 *
Car Battery Charger 364,549 140 *
Dual Polarity Power Supply 115,474 74 *
Fixed Voltage Power Supply 108,867 42 *
High Current Power Supply 118,414 58 *
High Voltage High Current Power Supply 95,875 25 *
LASER Power Supply 98,066 27
Portable CD Player Adapter For Car 76,896 11 *
Power Supply 307,936 249 *
Solid State Tesla Coil NEW! 2,422 (Not Yet Ranked) 0
Solid State Tesla Coil/High Voltage Generator 141,851 42
Transformerless Power Supply 162,132 107 *
Voltage Inverter 128,423 47 *
Voltage Inverter II 74,567 18 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 206,497 166
3 Watt FM Transmitter Rae XL Tkacik 107,654 68 *
50 Watt Amplifier 199,651 68
8 Note Tune Player 47,757 10 *
8 Watt Audio Amp 133,294 55 *
Aircraft Radio Communications Receiver 74,926 39 *
Crystal Radio 54,916 48 *
Digital Volume Control 127,645 40 *
Electronic Stethoscope 90,535 131 *
FET Audio Mixer 103,751 29
FM Transmitter 411,326 359
Guitar Fuzz Effect 72,105 44 *
Microphone Mixer Anatoly I. Shikhatov 81,405 20 *
Mono To Stereo Synthesizer oRbEq 35,376 14 *
One Tube Regenerative Radio NEW! 1,783 1 *
Op Amp Radio 123,352 65 *
Single Chip AM Radio NEW! 1,693 (Not Yet Ranked) 0 *
Single Chip FM Radio NEW! 2,832 0 *
Sound Level Meter 126,779 40 *
Stereo Tube Amplifier Weslee Kinsler 90,660 12 *
Tone Control 101,678 16
Transistor Organ 63,264 23

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 58,837 26 *
FM Telephone Bug 93,186 48
Phone Busy Indicator 58,049 19 *
Remote Telephone Ringer 37,523 2 *
Ringing Phone Light Flasher 69,641 24 *
Simple Phone Tap Derek Tombrello 167,383 92 *
Telephone Hold Button 35,114 7
Telephone Recorder 87,327 51 *

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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.