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
Wednesday, July 30, 2014
22 Watt Audio Amplifier155
FET Audio Mixer128
Yesterday
Tuesday, July 29, 2014
22 Watt Audio Amplifier393
FET Audio Mixer382
Of All Time 12VDC To 120VAC Inverter1,231,293
FM Transmitter828,807

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 163,552 60 *
Car Alarm Arming Horn Beep Canceller bob 83,128 6 *
Wireless Auto Tachometer 251,952 57

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 108,317 29 *
Parallel (Printer) Port Interface 209,208 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 346,376 61 *
3 Channel Spectrum Analyzer 146,025 19
40W Fluorescent Lamp Inverter Bart Milnes 253,785 60 *
Adjustable Strobe Light 223,477 36
Black Light 190,327 29
Colour (Sound) Organ 212,708 34
Electronic Dice NEW! 119,152 8 *
Fantastic Atom Expander 130,356 24
Flash Slave Trigger 155,312 17 *
Infa-Red Remote Control 497,428 216 *
IR Remote Extender NEW! 64,147 2 *
IR Remote Jammer Carl 191,096 109 *
IR Remote Switch NEW! 92,842 9 *
LASER Transmitter/Receiver 315,272 91
LED Chaser 341,277 83 *
LED Metronome NEW! 59,733 3 *
LED Thermometer 148,853 22 *
Light/Dark Detector 230,958 89 *
Simple Colour Organ 89,820 10 *
Strobe Light 209,063 27 *
TRIAC Light Dimmer 391,775 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 276,340 122 *
Electromagnetic Levitator NEW! 83,441 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 719,140 212 *
AC Motor Speed Controller 274,975 28 *
Air Flow Detector 181,473 54 *
Digital Keypad Combination Lock 131,711 20
Low Voltage Alarm 158,903 58 *
Pine Racecar Victory Judge 58,623 1 *
Pulse Width Modulation DC Motor Control 541,732 92
Rain Detector 230,657 110 *
Simple Lie Detector 453,501 319
Simple Polarity Tester Dudley LeRoux 99,384 13 *
Simple Servo Controller 148,534 22 *
Simple Touch Switch NEW! 105,404 5 *
Simple Two Speed Contactor DC Motor Controller 146,917 21 *
Stepper Motor Controller 594,001 120 *
Time Delay Relay 437,536 85
Time Delay Relay II jawaharlal@excite.com 173,825 39 *
Touch Switch 223,015 51 *
Video Activated Relay 70,970 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 118,974 9 *
Water Detector With Sump/Bilge Pump Controller 97,822 18 *
Wire Loop Alarm Alex Meaden 150,571 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 200,336 23 *
12VDC To 120VAC Inverter 1,231,293 682
6V to 12V Converter 374,628 121
Automatic 12V Lead Acid Battery Charger 717,259 236
Automatic Load Sensing Power Switch 106,349 14 *
Car Battery Charger 736,839 158 *
Dual Polarity Power Supply 256,402 84 *
Fixed Voltage Power Supply 238,564 52 *
High Current Power Supply 247,218 64 *
High Voltage High Current Power Supply 189,745 34 *
LASER Power Supply 210,794 28
Portable CD Player Adapter For Car 148,435 12 *
Power Supply 602,550 258 *
Solid State Tesla Coil NEW! 85,495 2
Solid State Tesla Coil/High Voltage Generator 318,458 49
Transformerless Power Supply 364,924 116 *
Voltage Inverter 261,274 51 *
Voltage Inverter II 147,588 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 465,577 182
3 Watt FM Transmitter Rae XL Tkacik 249,709 77 *
50 Watt Amplifier 395,075 73
8 Note Tune Player 92,726 12 *
8 Watt Audio Amp 274,321 63 *
Aircraft Radio Communications Receiver 185,274 48 *
Crystal Radio 110,941 53 *
Digital Volume Control 258,917 46 *
Electronic Stethoscope 205,563 138 *
FET Audio Mixer 241,927 40
FM Transmitter 828,807 414
Guitar Fuzz Effect 167,010 51 *
Microphone Mixer Anatoly I. Shikhatov 177,014 25 *
Mono To Stereo Synthesizer oRbEq 71,727 16 *
One Tube Regenerative Radio NEW! 69,647 4 *
Op Amp Radio 279,823 80 *
Single Chip AM Radio NEW! 48,318 2 *
Single Chip FM Radio NEW! 86,847 0 *
Sound Level Meter 262,763 50 *
Stereo Tube Amplifier Weslee Kinsler 195,024 15 *
Tone Control 225,849 29
Transistor Organ 132,015 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 117,769 27 *
FM Telephone Bug 174,802 57
Phone Busy Indicator 133,910 22 *
Remote Telephone Ringer 75,787 3 *
Ringing Phone Light Flasher 149,023 32 *
Simple Phone Tap Derek Tombrello 297,275 98 *
Telephone Hold Button 73,974 9
Telephone Recorder 157,508 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.