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
Thursday, March 18, 2010		 12VDC To 120VAC Inverter115
7 Segment LED Counter94
Yesterday
Wednesday, March 17, 2010		 12VDC To 120VAC Inverter663
7 Segment LED Counter522
Of All Time 12VDC To 120VAC Inverter637,594
FM Transmitter463,364

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 95,110 51 *
Car Alarm Arming Horn Beep Canceller bob 43,825 6 *
Wireless Auto Tachometer 150,277 52

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 63,960 29 *
Parallel (Printer) Port Interface 129,825 69

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 185,128 55 *
3 Channel Spectrum Analyzer 61,365 11
40W Fluorescent Lamp Inverter Bart Milnes 136,187 57 *
Adjustable Strobe Light 116,241 26
Black Light 111,774 27
Colour (Sound) Organ 122,943 28
Electronic Dice NEW! 24,188 2 *
Fantastic Atom Expander 71,726 22
Flash Slave Trigger 92,386 15 *
Infa-Red Remote Control 271,446 206 *
IR Remote Extender NEW! 8,652 0 *
IR Remote Jammer Carl 102,958 98 *
IR Remote Switch NEW! 11,301 4 *
LASER Transmitter/Receiver 162,149 84
LED Chaser 167,715 78 *
LED Metronome NEW! 8,629 0 *
LED Thermometer 81,025 18 *
Light/Dark Detector 122,988 84 *
Simple Colour Organ 51,839 10 *
Strobe Light 131,314 26 *
TRIAC Light Dimmer 201,101 50

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 169,379 119 *
Electromagnetic Levitator NEW! 13,989 2 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 358,728 195 *
AC Motor Speed Controller 84,302 19 *
Air Flow Detector 93,734 49 *
Digital Keypad Combination Lock 55,663 18
Low Voltage Alarm 79,523 50 *
Pine Racecar Victory Judge 30,535 0 *
Pulse Width Modulation DC Motor Control 292,228 87
Rain Detector 125,272 102 *
Simple Lie Detector 245,891 293
Simple Polarity Tester Dudley LeRoux 49,947 11 *
Simple Servo Controller 46,945 10 *
Simple Touch Switch NEW! 13,547 0 *
Simple Two Speed Contactor DC Motor Controller 85,992 20 *
Stepper Motor Controller 324,367 107 *
Time Delay Relay 196,982 65
Time Delay Relay II jawaharlal@excite.com 93,014 34 *
Touch Switch 133,650 47 *
Video Activated Relay 36,951 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 63,103 7 *
Water Detector With Sump/Bilge Pump Controller 47,259 16 *
Wire Loop Alarm Alex Meaden 82,466 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 18,270 7 *
12VDC To 120VAC Inverter 637,594 647
6V to 12V Converter 182,657 107
Automatic 12V Lead Acid Battery Charger 254,262 182
Automatic Load Sensing Power Switch 53,812 12 *
Car Battery Charger 422,973 146 *
Dual Polarity Power Supply 132,343 75 *
Fixed Voltage Power Supply 123,873 43 *
High Current Power Supply 134,692 58 *
High Voltage High Current Power Supply 108,586 28 *
LASER Power Supply 111,763 27
Portable CD Player Adapter For Car 86,497 11 *
Power Supply 348,241 250 *
Solid State Tesla Coil NEW! 10,396 0
Solid State Tesla Coil/High Voltage Generator 161,318 43
Transformerless Power Supply 185,604 108 *
Voltage Inverter 145,131 48 *
Voltage Inverter II 83,782 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 232,511 170
3 Watt FM Transmitter Rae XL Tkacik 124,680 68 *
50 Watt Amplifier 225,868 71
8 Note Tune Player 53,444 10 *
8 Watt Audio Amp 150,117 57 *
Aircraft Radio Communications Receiver 88,502 40 *
Crystal Radio 62,167 50 *
Digital Volume Control 145,246 40 *
Electronic Stethoscope 102,126 132 *
FET Audio Mixer 118,125 30
FM Transmitter 463,364 366
Guitar Fuzz Effect 82,658 45 *
Microphone Mixer Anatoly I. Shikhatov 93,508 20 *
Mono To Stereo Synthesizer oRbEq 39,033 14 *
One Tube Regenerative Radio NEW! 7,898 1 *
Op Amp Radio 139,732 69 *
Single Chip AM Radio NEW! 6,690 0 *
Single Chip FM Radio NEW! 11,761 0 *
Sound Level Meter 142,263 42 *
Stereo Tube Amplifier Weslee Kinsler 101,359 13 *
Tone Control 117,060 21
Transistor Organ 72,092 23

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 65,797 26 *
FM Telephone Bug 103,818 49
Phone Busy Indicator 64,224 19 *
Remote Telephone Ringer 42,322 2 *
Ringing Phone Light Flasher 78,351 24 *
Simple Phone Tap Derek Tombrello 185,943 92 *
Telephone Hold Button 38,686 7
Telephone Recorder 96,439 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.