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
Wednesday, September 08, 2010		 12VDC To 120VAC Inverter60
Transformerless Power Supply29
Yesterday
Tuesday, September 07, 2010		 12VDC To 120VAC Inverter476
7 Segment LED Counter325
Of All Time 12VDC To 120VAC Inverter727,420
FM Transmitter519,808

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 104,814 53 *
Car Alarm Arming Horn Beep Canceller bob 49,338 6 *
Wireless Auto Tachometer 166,050 54

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 69,896 29 *
Parallel (Printer) Port Interface 142,123 69

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 209,452 57 *
3 Channel Spectrum Analyzer 70,700 12
40W Fluorescent Lamp Inverter Bart Milnes 153,119 58 *
Adjustable Strobe Light 129,682 30
Black Light 122,736 28
Colour (Sound) Organ 135,883 31
Electronic Dice NEW! 34,440 3 *
Fantastic Atom Expander 79,134 22
Flash Slave Trigger 101,666 15 *
Infa-Red Remote Control 306,088 211 *
IR Remote Extender NEW! 15,128 0 *
IR Remote Jammer Carl 114,846 101 *
IR Remote Switch NEW! 21,417 5 *
LASER Transmitter/Receiver 186,382 86
LED Chaser 193,514 80 *
LED Metronome NEW! 15,185 2 *
LED Thermometer 90,588 18 *
Light/Dark Detector 138,832 86 *
Simple Colour Organ 57,230 10 *
Strobe Light 143,064 26 *
TRIAC Light Dimmer 224,678 51

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 187,843 121 *
Electromagnetic Levitator NEW! 24,124 6 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 412,021 200 *
AC Motor Speed Controller 104,629 21 *
Air Flow Detector 104,911 51 *
Digital Keypad Combination Lock 65,118 18
Low Voltage Alarm 89,748 52 *
Pine Racecar Victory Judge 33,825 0 *
Pulse Width Modulation DC Motor Control 329,515 88
Rain Detector 141,526 105 *
Simple Lie Detector 272,993 299
Simple Polarity Tester Dudley LeRoux 56,086 11 *
Simple Servo Controller 56,438 13 *
Simple Touch Switch NEW! 24,726 1 *
Simple Two Speed Contactor DC Motor Controller 95,433 20 *
Stepper Motor Controller 367,798 111 *
Time Delay Relay 231,857 69
Time Delay Relay II jawaharlal@excite.com 105,802 35 *
Touch Switch 148,120 49 *
Video Activated Relay 41,439 7 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 70,901 9 *
Water Detector With Sump/Bilge Pump Controller 54,016 17 *
Wire Loop Alarm Alex Meaden 92,177 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 35,430 10 *
12VDC To 120VAC Inverter 727,420 651
6V to 12V Converter 212,977 110
Automatic 12V Lead Acid Battery Charger 306,337 195
Automatic Load Sensing Power Switch 60,762 12 *
Car Battery Charger 474,605 152 *
Dual Polarity Power Supply 150,256 78 *
Fixed Voltage Power Supply 139,098 45 *
High Current Power Supply 150,873 59 *
High Voltage High Current Power Supply 121,102 28 *
LASER Power Supply 125,099 27
Portable CD Player Adapter For Car 96,380 11 *
Power Supply 386,603 252 *
Solid State Tesla Coil NEW! 19,330 2
Solid State Tesla Coil/High Voltage Generator 181,679 46
Transformerless Power Supply 210,887 110 *
Voltage Inverter 162,878 50 *
Voltage Inverter II 93,088 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 260,454 172
3 Watt FM Transmitter Rae XL Tkacik 144,775 71 *
50 Watt Amplifier 251,600 72
8 Note Tune Player 58,975 10 *
8 Watt Audio Amp 166,967 58 *
Aircraft Radio Communications Receiver 102,973 42 *
Crystal Radio 69,059 51 *
Digital Volume Control 162,602 43 *
Electronic Stethoscope 114,434 134 *
FET Audio Mixer 133,144 32
FM Transmitter 519,808 379
Guitar Fuzz Effect 94,023 45 *
Microphone Mixer Anatoly I. Shikhatov 105,240 22 *
Mono To Stereo Synthesizer oRbEq 42,973 14 *
One Tube Regenerative Radio NEW! 14,060 1 *
Op Amp Radio 154,864 71 *
Single Chip AM Radio NEW! 11,834 0 *
Single Chip FM Radio NEW! 20,796 0 *
Sound Level Meter 158,334 45 *
Stereo Tube Amplifier Weslee Kinsler 111,677 13 *
Tone Control 133,062 24
Transistor Organ 80,433 26

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 73,096 26 *
FM Telephone Bug 115,087 56
Phone Busy Indicator 70,884 20 *
Remote Telephone Ringer 47,171 3 *
Ringing Phone Light Flasher 87,771 24 *
Simple Phone Tap Derek Tombrello 204,433 92 *
Telephone Hold Button 42,904 7
Telephone Recorder 105,566 52 *

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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.