Electronic Circuits


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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
Friday, September 19, 2014
Automatic 12V Lead Acid Battery Charger129
12VDC To 120VAC Inverter118
Yesterday
Thursday, September 18, 2014
12VDC To 120VAC Inverter206
Infa-Red Remote Control194
Of All Time 12VDC To 120VAC Inverter1,241,411
FM Transmitter835,334

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 165,443 60 *
Car Alarm Arming Horn Beep Canceller bob 83,993 6 *
Wireless Auto Tachometer 253,716 57

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 109,309 29 *
Parallel (Printer) Port Interface 210,472 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 348,888 61 *
3 Channel Spectrum Analyzer 147,698 19
40W Fluorescent Lamp Inverter Bart Milnes 255,595 60 *
Adjustable Strobe Light 225,254 36
Black Light 191,539 29
Colour (Sound) Organ 214,065 34
Electronic Dice NEW! 120,414 8 *
Fantastic Atom Expander 131,637 24
Flash Slave Trigger 156,336 17 *
Infa-Red Remote Control 505,757 216 *
IR Remote Extender NEW! 65,293 2 *
IR Remote Jammer Carl 192,606 110 *
IR Remote Switch NEW! 94,071 9 *
LASER Transmitter/Receiver 317,746 91
LED Chaser 348,619 83 *
LED Metronome NEW! 60,462 3 *
LED Thermometer 149,887 22 *
Light/Dark Detector 232,333 89 *
Simple Colour Organ 90,541 10 *
Strobe Light 210,138 27 *
TRIAC Light Dimmer 394,869 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 277,761 122 *
Electromagnetic Levitator NEW! 84,520 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 723,962 214 *
AC Motor Speed Controller 277,976 28 *
Air Flow Detector 183,461 54 *
Digital Keypad Combination Lock 133,008 20
Low Voltage Alarm 160,353 58 *
Pine Racecar Victory Judge 59,279 1 *
Pulse Width Modulation DC Motor Control 546,934 93
Rain Detector 232,281 111 *
Simple Lie Detector 457,076 320
Simple Polarity Tester Dudley LeRoux 100,475 13 *
Simple Servo Controller 150,793 22 *
Simple Touch Switch NEW! 107,065 5 *
Simple Two Speed Contactor DC Motor Controller 148,103 21 *
Stepper Motor Controller 597,946 120 *
Time Delay Relay 441,947 86
Time Delay Relay II jawaharlal@excite.com 175,222 39 *
Touch Switch 224,407 51 *
Video Activated Relay 71,997 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 120,226 9 *
Water Detector With Sump/Bilge Pump Controller 98,706 18 *
Wire Loop Alarm Alex Meaden 151,575 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 204,396 24 *
12VDC To 120VAC Inverter 1,241,411 684
6V to 12V Converter 377,942 121
Automatic 12V Lead Acid Battery Charger 726,816 238
Automatic Load Sensing Power Switch 107,446 14 *
Car Battery Charger 740,426 158 *
Dual Polarity Power Supply 258,506 84 *
Fixed Voltage Power Supply 240,835 52 *
High Current Power Supply 249,686 64 *
High Voltage High Current Power Supply 190,999 34 *
LASER Power Supply 212,723 28
Portable CD Player Adapter For Car 149,546 12 *
Power Supply 607,943 258 *
Solid State Tesla Coil NEW! 86,769 2
Solid State Tesla Coil/High Voltage Generator 322,241 49
Transformerless Power Supply 367,940 116 *
Voltage Inverter 263,302 51 *
Voltage Inverter II 148,818 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 483,798 182
3 Watt FM Transmitter Rae XL Tkacik 251,996 80 *
50 Watt Amplifier 397,623 73
8 Note Tune Player 93,436 12 *
8 Watt Audio Amp 276,882 65 *
Aircraft Radio Communications Receiver 187,770 49 *
Crystal Radio 111,827 53 *
Digital Volume Control 260,411 46 *
Electronic Stethoscope 207,552 138 *
FET Audio Mixer 258,363 40
FM Transmitter 835,334 418
Guitar Fuzz Effect 168,790 51 *
Microphone Mixer Anatoly I. Shikhatov 178,776 25 *
Mono To Stereo Synthesizer oRbEq 72,844 16 *
One Tube Regenerative Radio NEW! 71,370 4 *
Op Amp Radio 285,476 80 *
Single Chip AM Radio NEW! 49,226 2 *
Single Chip FM Radio NEW! 88,755 0 *
Sound Level Meter 264,478 50 *
Stereo Tube Amplifier Weslee Kinsler 196,915 15 *
Tone Control 227,667 29
Transistor Organ 133,219 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 118,761 27 *
FM Telephone Bug 176,218 57
Phone Busy Indicator 135,945 24 *
Remote Telephone Ringer 76,381 3 *
Ringing Phone Light Flasher 150,467 32 *
Simple Phone Tap Derek Tombrello 299,404 98 *
Telephone Hold Button 74,853 9
Telephone Recorder 158,508 54 *


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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.