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 11, 2010		 12VDC To 120VAC Inverter191
7 Segment LED Counter133
Yesterday
Wednesday, March 10, 2010		 12VDC To 120VAC Inverter699
7 Segment LED Counter569
Of All Time 12VDC To 120VAC Inverter633,005
FM Transmitter460,388

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 94,574 51 *
Car Alarm Arming Horn Beep Canceller bob 43,547 6 *
Wireless Auto Tachometer 149,455 52

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 63,663 29 *
Parallel (Printer) Port Interface 129,175 69

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 183,826 55 *
3 Channel Spectrum Analyzer 60,927 11
40W Fluorescent Lamp Inverter Bart Milnes 135,330 57 *
Adjustable Strobe Light 115,663 26
Black Light 111,171 27
Colour (Sound) Organ 122,254 28
Electronic Dice NEW! 23,612 2 *
Fantastic Atom Expander 71,281 22
Flash Slave Trigger 91,867 15 *
Infa-Red Remote Control 269,845 206 *
IR Remote Extender NEW! 8,307 0 *
IR Remote Jammer Carl 102,412 98 *
IR Remote Switch NEW! 10,842 4 *
LASER Transmitter/Receiver 160,850 84
LED Chaser 166,460 78 *
LED Metronome NEW! 8,320 0 *
LED Thermometer 80,576 18 *
Light/Dark Detector 122,146 84 *
Simple Colour Organ 51,549 10 *
Strobe Light 130,730 26 *
TRIAC Light Dimmer 199,677 50

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 168,491 119 *
Electromagnetic Levitator NEW! 13,453 2 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 355,501 195 *
AC Motor Speed Controller 83,491 19 *
Air Flow Detector 93,145 49 *
Digital Keypad Combination Lock 55,152 18
Low Voltage Alarm 79,003 50 *
Pine Racecar Victory Judge 30,381 0 *
Pulse Width Modulation DC Motor Control 290,055 87
Rain Detector 124,414 102 *
Simple Lie Detector 244,471 293
Simple Polarity Tester Dudley LeRoux 49,652 11 *
Simple Servo Controller 46,521 10 *
Simple Touch Switch NEW! 13,070 0 *
Simple Two Speed Contactor DC Motor Controller 85,529 20 *
Stepper Motor Controller 321,666 107 *
Time Delay Relay 195,065 65
Time Delay Relay II jawaharlal@excite.com 92,331 34 *
Touch Switch 132,807 47 *
Video Activated Relay 36,753 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 62,756 7 *
Water Detector With Sump/Bilge Pump Controller 46,930 16 *
Wire Loop Alarm Alex Meaden 81,990 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 17,508 7 *
12VDC To 120VAC Inverter 633,005 647
6V to 12V Converter 181,381 107
Automatic 12V Lead Acid Battery Charger 251,914 182
Automatic Load Sensing Power Switch 53,485 12 *
Car Battery Charger 420,135 146 *
Dual Polarity Power Supply 131,461 75 *
Fixed Voltage Power Supply 123,070 43 *
High Current Power Supply 133,876 58 *
High Voltage High Current Power Supply 107,948 28 *
LASER Power Supply 111,070 27
Portable CD Player Adapter For Car 86,002 11 *
Power Supply 346,023 250 *
Solid State Tesla Coil NEW! 9,994 0
Solid State Tesla Coil/High Voltage Generator 160,286 43
Transformerless Power Supply 184,417 108 *
Voltage Inverter 144,245 48 *
Voltage Inverter II 83,219 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 231,124 170
3 Watt FM Transmitter Rae XL Tkacik 123,771 68 *
50 Watt Amplifier 224,397 71
8 Note Tune Player 53,162 10 *
8 Watt Audio Amp 149,227 57 *
Aircraft Radio Communications Receiver 87,797 40 *
Crystal Radio 61,824 50 *
Digital Volume Control 144,320 40 *
Electronic Stethoscope 101,448 132 *
FET Audio Mixer 117,366 30
FM Transmitter 460,388 366
Guitar Fuzz Effect 81,997 45 *
Microphone Mixer Anatoly I. Shikhatov 92,846 20 *
Mono To Stereo Synthesizer oRbEq 38,817 14 *
One Tube Regenerative Radio NEW! 7,588 1 *
Op Amp Radio 138,928 69 *
Single Chip AM Radio NEW! 6,458 0 *
Single Chip FM Radio NEW! 11,294 0 *
Sound Level Meter 141,396 42 *
Stereo Tube Amplifier Weslee Kinsler 100,774 13 *
Tone Control 116,168 21
Transistor Organ 71,589 23

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 65,445 26 *
FM Telephone Bug 103,265 49
Phone Busy Indicator 63,914 19 *
Remote Telephone Ringer 42,105 2 *
Ringing Phone Light Flasher 77,883 24 *
Simple Phone Tap Derek Tombrello 184,947 92 *
Telephone Hold Button 38,488 7
Telephone Recorder 95,981 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.