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
Saturday, July 30, 2016
Power Supply26
Automatic 12V Lead Acid Battery Charger10
Yesterday
Friday, July 29, 2016
12VDC To 120VAC Inverter91
Automatic 12V Lead Acid Battery Charger76
Of All Time 12VDC To 120VAC Inverter1,349,120
FM Transmitter901,756

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 179,063 61 *
Car Alarm Arming Horn Beep Canceller bob 92,958 6 *
Wireless Auto Tachometer 284,871 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 122,958 29 *
Parallel (Printer) Port Interface 224,976 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 375,434 62 *
3 Channel Spectrum Analyzer 169,869 20
40W Fluorescent Lamp Inverter Bart Milnes 276,575 60 *
Adjustable Strobe Light 247,656 36
Black Light 210,495 29
Colour (Sound) Organ 233,135 35
Electronic Dice NEW! 138,631 8 *
Fantastic Atom Expander 147,878 25
Flash Slave Trigger 170,455 17 *
Infa-Red Remote Control 562,644 216 *
IR Remote Extender NEW! 79,464 2 *
IR Remote Jammer Carl 210,953 110 *
IR Remote Switch NEW! 110,455 9 *
LASER Transmitter/Receiver 346,121 91
LED Chaser 390,078 83 *
LED Metronome NEW! 71,508 3 *
LED Thermometer 164,192 22 *
Light/Dark Detector 257,437 89 *
Simple Colour Organ 101,695 10 *
Strobe Light 231,495 27 *
TRIAC Light Dimmer 436,482 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 299,891 122 *
Electromagnetic Levitator NEW! 99,709 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 829,194 214 *
AC Motor Speed Controller 315,681 29 *
Air Flow Detector 205,869 54 *
Digital Keypad Combination Lock 151,800 20
Low Voltage Alarm 177,781 58 *
Pine Racecar Victory Judge 66,797 1 *
Pulse Width Modulation DC Motor Control 588,235 93
Rain Detector 259,032 112 *
Simple Lie Detector 497,703 323
Simple Polarity Tester Dudley LeRoux 115,830 13 *
Simple Servo Controller 171,723 22 *
Simple Touch Switch NEW! 127,015 5 *
Simple Two Speed Contactor DC Motor Controller 164,337 21 *
Stepper Motor Controller 647,629 120 *
Time Delay Relay 488,788 86
Time Delay Relay II jawaharlal@excite.com 191,932 39 *
Touch Switch 243,293 51 *
Video Activated Relay 83,604 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 134,406 10 *
Water Detector With Sump/Bilge Pump Controller 110,039 18 *
Wire Loop Alarm Alex Meaden 165,833 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 245,110 25 *
12VDC To 120VAC Inverter 1,349,120 686
6V to 12V Converter 421,891 121
Automatic 12V Lead Acid Battery Charger 828,929 243
Automatic Load Sensing Power Switch 120,779 15 *
Car Battery Charger 790,900 159 *
Dual Polarity Power Supply 283,780 84 *
Fixed Voltage Power Supply 263,180 52 *
High Current Power Supply 278,798 64 *
High Voltage High Current Power Supply 208,539 35 *
LASER Power Supply 235,692 28
Portable CD Player Adapter For Car 164,603 12 *
Power Supply 657,938 259 *
Solid State Tesla Coil NEW! 104,134 3
Solid State Tesla Coil/High Voltage Generator 361,000 49
Transformerless Power Supply 400,570 116 *
Voltage Inverter 287,082 51 *
Voltage Inverter II 163,850 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 522,573 182
3 Watt FM Transmitter Rae XL Tkacik 278,721 81 *
50 Watt Amplifier 438,278 74
8 Note Tune Player 105,009 12 *
8 Watt Audio Amp 308,656 67 *
Aircraft Radio Communications Receiver 214,707 49 *
Crystal Radio 125,421 53 *
Digital Volume Control 280,348 46 *
Electronic Stethoscope 253,691 141 *
FET Audio Mixer 284,046 40
FM Transmitter 901,756 418
Guitar Fuzz Effect 190,073 52 *
Microphone Mixer Anatoly I. Shikhatov 198,200 25 *
Mono To Stereo Synthesizer oRbEq 87,522 17 *
One Tube Regenerative Radio NEW! 89,825 4 *
Op Amp Radio 322,068 80 *
Single Chip AM Radio NEW! 70,077 2 *
Single Chip FM Radio NEW! 116,999 0 *
Sound Level Meter 289,352 51 *
Stereo Tube Amplifier Weslee Kinsler 219,555 15 *
Tone Control 250,723 31
Transistor Organ 150,032 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 128,216 27 *
FM Telephone Bug 191,220 57
Phone Busy Indicator 163,798 24 *
Remote Telephone Ringer 84,835 3 *
Ringing Phone Light Flasher 166,973 33 *
Simple Phone Tap Derek Tombrello 318,050 98 *
Telephone Hold Button 86,991 9
Telephone Recorder 171,451 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.