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, December 09, 2009		 12VDC To 120VAC Inverter145
7 Segment LED Counter142
Yesterday
Tuesday, December 08, 2009		 12VDC To 120VAC Inverter651
7 Segment LED Counter555
Of All Time 12VDC To 120VAC Inverter577,204
FM Transmitter422,627

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 87,445 49 *
Car Alarm Arming Horn Beep Canceller bob 39,871 5 *
Wireless Auto Tachometer 138,449 52

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 59,351 29 *
Parallel (Printer) Port Interface 119,712 69

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 166,631 55 *
3 Channel Spectrum Analyzer 54,679 11
40W Fluorescent Lamp Inverter Bart Milnes 123,283 57 *
Adjustable Strobe Light 106,666 26
Black Light 103,308 27
Colour (Sound) Organ 111,772 27
Electronic Dice NEW! 5,977 1 *
Fantastic Atom Expander 66,039 22
Flash Slave Trigger 84,525 15 *
Infa-Red Remote Control 246,334 206 *
IR Remote Extender NEW! 3,728 0 *
IR Remote Jammer Carl 94,818 98 *
IR Remote Switch NEW! 4,671 2 *
LASER Transmitter/Receiver 143,239 83
LED Chaser 150,216 77 *
LED Metronome NEW! 3,686 0 *
LED Thermometer 73,736 16 *
Light/Dark Detector 111,632 83 *
Simple Colour Organ 47,565 9 *
Strobe Light 122,299 26 *
TRIAC Light Dimmer 182,729 50

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 156,262 119 *
Electromagnetic Levitator NEW! 5,634 1 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 316,848 190 *
AC Motor Speed Controller 70,979 18 *
Air Flow Detector 85,111 48 *
Digital Keypad Combination Lock 48,919 18
Low Voltage Alarm 71,427 48 *
Pine Racecar Victory Judge 27,969 0 *
Pulse Width Modulation DC Motor Control 269,574 87
Rain Detector 113,750 102 *
Simple Lie Detector 224,087 283
Simple Polarity Tester Dudley LeRoux 45,468 11 *
Simple Servo Controller 40,132 8 *
Simple Touch Switch NEW! 5,582 0 *
Simple Two Speed Contactor DC Motor Controller 78,950 19 *
Stepper Motor Controller 289,470 106 *
Time Delay Relay 172,808 65
Time Delay Relay II jawaharlal@excite.com 83,825 34 *
Touch Switch 121,921 47 *
Video Activated Relay 33,818 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 57,545 7 *
Water Detector With Sump/Bilge Pump Controller 42,195 16 *
Wire Loop Alarm Alex Meaden 75,148 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 7,375 4 *
12VDC To 120VAC Inverter 577,204 641
6V to 12V Converter 164,229 107
Automatic 12V Lead Acid Battery Charger 222,183 177
Automatic Load Sensing Power Switch 48,720 12 *
Car Battery Charger 377,112 144 *
Dual Polarity Power Supply 119,387 74 *
Fixed Voltage Power Supply 112,165 42 *
High Current Power Supply 122,348 58 *
High Voltage High Current Power Supply 99,005 25 *
LASER Power Supply 101,329 27
Portable CD Player Adapter For Car 79,175 11 *
Power Supply 317,085 249 *
Solid State Tesla Coil NEW! 4,261 0
Solid State Tesla Coil/High Voltage Generator 146,395 42
Transformerless Power Supply 167,528 107 *
Voltage Inverter 132,307 47 *
Voltage Inverter II 76,729 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 212,293 167
3 Watt FM Transmitter Rae XL Tkacik 111,474 68 *
50 Watt Amplifier 205,442 70
8 Note Tune Player 49,130 10 *
8 Watt Audio Amp 137,284 57 *
Aircraft Radio Communications Receiver 78,141 40 *
Crystal Radio 56,585 50 *
Digital Volume Control 131,957 40 *
Electronic Stethoscope 92,986 132 *
FET Audio Mixer 107,148 30
FM Transmitter 422,627 363
Guitar Fuzz Effect 74,450 45 *
Microphone Mixer Anatoly I. Shikhatov 84,221 20 *
Mono To Stereo Synthesizer oRbEq 36,182 14 *
One Tube Regenerative Radio NEW! 3,225 1 *
Op Amp Radio 126,906 66 *
Single Chip AM Radio NEW! 2,828 0 *
Single Chip FM Radio NEW! 4,796 0 *
Sound Level Meter 130,335 41 *
Stereo Tube Amplifier Weslee Kinsler 93,077 12 *
Tone Control 105,227 21
Transistor Organ 65,318 23

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 60,486 26 *
FM Telephone Bug 95,708 49
Phone Busy Indicator 59,478 19 *
Remote Telephone Ringer 38,675 2 *
Ringing Phone Light Flasher 71,632 24 *
Simple Phone Tap Derek Tombrello 171,806 92 *
Telephone Hold Button 35,939 7
Telephone Recorder 89,292 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.