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 Inverter236
7 Segment LED Counter213
Yesterday
Monday, February 08, 2010		 12VDC To 120VAC Inverter696
Car Battery Charger569
Of All Time 12VDC To 120VAC Inverter613,035
FM Transmitter447,817

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 92,366 51 *
Car Alarm Arming Horn Beep Canceller bob 42,287 6 *
Wireless Auto Tachometer 145,795 52

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 62,200 29 *
Parallel (Printer) Port Interface 125,859 69

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 178,099 55 *
3 Channel Spectrum Analyzer 58,813 11
40W Fluorescent Lamp Inverter Bart Milnes 131,419 57 *
Adjustable Strobe Light 112,593 26
Black Light 108,659 27
Colour (Sound) Organ 118,928 28
Electronic Dice NEW! 21,205 2 *
Fantastic Atom Expander 69,587 22
Flash Slave Trigger 89,499 15 *
Infa-Red Remote Control 261,653 206 *
IR Remote Extender NEW! 6,710 0 *
IR Remote Jammer Carl 99,858 98 *
IR Remote Switch NEW! 8,743 4 *
LASER Transmitter/Receiver 154,843 84
LED Chaser 161,089 78 *
LED Metronome NEW! 6,714 0 *
LED Thermometer 78,394 18 *
Light/Dark Detector 118,407 84 *
Simple Colour Organ 50,334 10 *
Strobe Light 128,035 26 *
TRIAC Light Dimmer 193,823 50

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 164,349 119 *
Electromagnetic Levitator NEW! 10,842 2 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 339,583 195 *
AC Motor Speed Controller 79,247 19 *
Air Flow Detector 90,444 49 *
Digital Keypad Combination Lock 52,964 18
Low Voltage Alarm 76,384 50 *
Pine Racecar Victory Judge 29,597 0 *
Pulse Width Modulation DC Motor Control 280,748 87
Rain Detector 120,709 102 *
Simple Lie Detector 237,748 293
Simple Polarity Tester Dudley LeRoux 48,225 11 *
Simple Servo Controller 44,399 10 *
Simple Touch Switch NEW! 10,572 0 *
Simple Two Speed Contactor DC Motor Controller 83,386 20 *
Stepper Motor Controller 310,038 107 *
Time Delay Relay 187,138 65
Time Delay Relay II jawaharlal@excite.com 89,332 34 *
Touch Switch 129,173 47 *
Video Activated Relay 35,778 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 61,179 7 *
Water Detector With Sump/Bilge Pump Controller 45,366 16 *
Wire Loop Alarm Alex Meaden 79,760 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 13,955 7 *
12VDC To 120VAC Inverter 613,035 647
6V to 12V Converter 175,542 107
Automatic 12V Lead Acid Battery Charger 241,783 182
Automatic Load Sensing Power Switch 51,938 12 *
Car Battery Charger 406,711 146 *
Dual Polarity Power Supply 127,172 75 *
Fixed Voltage Power Supply 119,263 43 *
High Current Power Supply 129,931 58 *
High Voltage High Current Power Supply 104,954 28 *
LASER Power Supply 107,619 27
Portable CD Player Adapter For Car 83,756 11 *
Power Supply 335,618 250 *
Solid State Tesla Coil NEW! 8,023 0
Solid State Tesla Coil/High Voltage Generator 155,673 43
Transformerless Power Supply 178,653 108 *
Voltage Inverter 140,087 48 *
Voltage Inverter II 81,060 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 224,746 170
3 Watt FM Transmitter Rae XL Tkacik 119,617 68 *
50 Watt Amplifier 217,641 71
8 Note Tune Player 51,827 10 *
8 Watt Audio Amp 145,154 57 *
Aircraft Radio Communications Receiver 84,498 40 *
Crystal Radio 60,205 50 *
Digital Volume Control 140,146 40 *
Electronic Stethoscope 98,636 132 *
FET Audio Mixer 113,933 30
FM Transmitter 447,817 366
Guitar Fuzz Effect 79,305 45 *
Microphone Mixer Anatoly I. Shikhatov 90,181 20 *
Mono To Stereo Synthesizer oRbEq 37,919 14 *
One Tube Regenerative Radio NEW! 6,172 1 *
Op Amp Radio 134,780 69 *
Single Chip AM Radio NEW! 5,291 0 *
Single Chip FM Radio NEW! 9,082 0 *
Sound Level Meter 137,694 42 *
Stereo Tube Amplifier Weslee Kinsler 98,153 13 *
Tone Control 112,378 21
Transistor Organ 69,368 23

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 63,793 26 *
FM Telephone Bug 100,731 49
Phone Busy Indicator 62,545 19 *
Remote Telephone Ringer 40,978 2 *
Ringing Phone Light Flasher 75,800 24 *
Simple Phone Tap Derek Tombrello 180,471 92 *
Telephone Hold Button 37,650 7
Telephone Recorder 93,676 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.