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
Tuesday, February 09, 2010		 12VDC To 120VAC Inverter148
7 Segment LED Counter125
Yesterday
Monday, February 08, 2010		 12VDC To 120VAC Inverter696
Car Battery Charger569
Of All Time 12VDC To 120VAC Inverter612,947
FM Transmitter447,783

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 92,357 51 *
Car Alarm Arming Horn Beep Canceller bob 42,283 6 *
Wireless Auto Tachometer 145,777 52

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 62,198 29 *
Parallel (Printer) Port Interface 125,851 69

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 178,084 55 *
3 Channel Spectrum Analyzer 58,807 11
40W Fluorescent Lamp Inverter Bart Milnes 131,404 57 *
Adjustable Strobe Light 112,580 26
Black Light 108,646 27
Colour (Sound) Organ 118,917 28
Electronic Dice NEW! 21,193 2 *
Fantastic Atom Expander 69,580 22
Flash Slave Trigger 89,488 15 *
Infa-Red Remote Control 261,615 206 *
IR Remote Extender NEW! 6,704 0 *
IR Remote Jammer Carl 99,849 98 *
IR Remote Switch NEW! 8,737 4 *
LASER Transmitter/Receiver 154,829 84
LED Chaser 161,066 78 *
LED Metronome NEW! 6,708 0 *
LED Thermometer 78,385 18 *
Light/Dark Detector 118,380 84 *
Simple Colour Organ 50,327 10 *
Strobe Light 128,024 26 *
TRIAC Light Dimmer 193,807 50

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 164,332 119 *
Electromagnetic Levitator NEW! 10,832 2 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 339,495 195 *
AC Motor Speed Controller 79,226 19 *
Air Flow Detector 90,431 49 *
Digital Keypad Combination Lock 52,947 18
Low Voltage Alarm 76,374 50 *
Pine Racecar Victory Judge 29,591 0 *
Pulse Width Modulation DC Motor Control 280,722 87
Rain Detector 120,690 102 *
Simple Lie Detector 237,719 293
Simple Polarity Tester Dudley LeRoux 48,224 11 *
Simple Servo Controller 44,391 10 *
Simple Touch Switch NEW! 10,561 0 *
Simple Two Speed Contactor DC Motor Controller 83,375 20 *
Stepper Motor Controller 309,978 107 *
Time Delay Relay 187,100 65
Time Delay Relay II jawaharlal@excite.com 89,319 34 *
Touch Switch 129,153 47 *
Video Activated Relay 35,773 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 61,175 7 *
Water Detector With Sump/Bilge Pump Controller 45,359 16 *
Wire Loop Alarm Alex Meaden 79,747 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 13,934 7 *
12VDC To 120VAC Inverter 612,947 647
6V to 12V Converter 175,520 107
Automatic 12V Lead Acid Battery Charger 241,740 182
Automatic Load Sensing Power Switch 51,932 12 *
Car Battery Charger 406,647 146 *
Dual Polarity Power Supply 127,160 75 *
Fixed Voltage Power Supply 119,249 43 *
High Current Power Supply 129,908 58 *
High Voltage High Current Power Supply 104,940 28 *
LASER Power Supply 107,607 27
Portable CD Player Adapter For Car 83,750 11 *
Power Supply 335,568 250 *
Solid State Tesla Coil NEW! 8,016 0
Solid State Tesla Coil/High Voltage Generator 155,659 43
Transformerless Power Supply 178,628 108 *
Voltage Inverter 140,078 48 *
Voltage Inverter II 81,051 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 224,715 170
3 Watt FM Transmitter Rae XL Tkacik 119,606 68 *
50 Watt Amplifier 217,617 71
8 Note Tune Player 51,820 10 *
8 Watt Audio Amp 145,138 57 *
Aircraft Radio Communications Receiver 84,485 40 *
Crystal Radio 60,202 50 *
Digital Volume Control 140,128 40 *
Electronic Stethoscope 98,624 132 *
FET Audio Mixer 113,924 30
FM Transmitter 447,783 366
Guitar Fuzz Effect 79,295 45 *
Microphone Mixer Anatoly I. Shikhatov 90,172 20 *
Mono To Stereo Synthesizer oRbEq 37,917 14 *
One Tube Regenerative Radio NEW! 6,169 1 *
Op Amp Radio 134,765 69 *
Single Chip AM Radio NEW! 5,289 0 *
Single Chip FM Radio NEW! 9,072 0 *
Sound Level Meter 137,683 42 *
Stereo Tube Amplifier Weslee Kinsler 98,149 13 *
Tone Control 112,368 21
Transistor Organ 69,359 23

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 63,791 26 *
FM Telephone Bug 100,724 49
Phone Busy Indicator 62,539 19 *
Remote Telephone Ringer 40,974 2 *
Ringing Phone Light Flasher 75,794 24 *
Simple Phone Tap Derek Tombrello 180,457 92 *
Telephone Hold Button 37,649 7
Telephone Recorder 93,657 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.