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
Thursday, November 21, 2024		 12VDC To 120VAC Inverter5
LASER Transmitter/Receiver4
Yesterday
Wednesday, November 20, 2024		 One Tube Regenerative Radio28
12VDC To 120VAC Inverter26
Of All Time 12VDC To 120VAC Inverter1,539,834
FM Transmitter1,015,990

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 229,359 61 *
Car Alarm Arming Horn Beep Canceller bob 138,819 6 *
Wireless Auto Tachometer 345,909 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 162,078 29 *
Parallel (Printer) Port Interface 290,066 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 451,053 63 *
3 Channel Spectrum Analyzer 225,115 20
40W Fluorescent Lamp Inverter Bart Milnes 332,713 60 *
Adjustable Strobe Light 312,394 36
Black Light 285,000 29
Colour (Sound) Organ 293,958 36
Electronic Dice NEW! 191,811 10 *
Fantastic Atom Expander 205,354 25
Flash Slave Trigger 224,249 18 *
Infa-Red Remote Control 640,714 216 *
IR Remote Extender NEW! 135,435 3 *
IR Remote Jammer Carl 269,470 110 *
IR Remote Switch NEW! 159,981 9 *
LASER Transmitter/Receiver 420,783 92
LED Chaser 449,765 83 *
LED Metronome NEW! 101,990 3 *
LED Thermometer 209,374 22 *
Light/Dark Detector 308,528 90 *
Simple Colour Organ 139,721 11 *
Strobe Light 278,350 27 *
TRIAC Light Dimmer 556,904 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 363,549 122 *
Electromagnetic Levitator NEW! 146,879 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 926,794 214 *
AC Motor Speed Controller 395,951 29 *
Air Flow Detector 254,503 54 *
Digital Keypad Combination Lock 204,614 20
Low Voltage Alarm 231,995 58 *
Pine Racecar Victory Judge 104,975 1 *
Pulse Width Modulation DC Motor Control 658,754 94
Rain Detector 307,766 112 *
Simple Lie Detector 568,349 323
Simple Polarity Tester Dudley LeRoux 168,125 13 *
Simple Servo Controller 224,443 22 *
Simple Touch Switch NEW! 172,670 6 *
Simple Two Speed Contactor DC Motor Controller 208,025 21 *
Stepper Motor Controller 752,534 120 *
Time Delay Relay 559,118 88
Time Delay Relay II jawaharlal@excite.com 250,362 39 *
Touch Switch 292,787 51 *
Video Activated Relay 124,327 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 184,534 10 *
Water Detector With Sump/Bilge Pump Controller 155,692 18 *
Wire Loop Alarm Alex Meaden 208,227 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 320,766 25 *
12VDC To 120VAC Inverter 1,539,834 691
6V to 12V Converter 531,891 121
Automatic 12V Lead Acid Battery Charger 941,565 248
Automatic Load Sensing Power Switch 170,389 16 *
Car Battery Charger 887,225 159 *
Dual Polarity Power Supply 374,732 84 *
Fixed Voltage Power Supply 314,737 52 *
High Current Power Supply 343,729 66 *
High Voltage High Current Power Supply 267,292 35 *
LASER Power Supply 299,751 28
Portable CD Player Adapter For Car 215,046 12 *
Power Supply 743,270 259 *
Solid State Tesla Coil NEW! 149,896 4
Solid State Tesla Coil/High Voltage Generator 448,910 51
Transformerless Power Supply 466,918 117 *
Voltage Inverter 344,026 51 *
Voltage Inverter II 206,634 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 588,972 182
3 Watt FM Transmitter Rae XL Tkacik 340,007 83 *
50 Watt Amplifier 512,246 74
8 Note Tune Player 143,468 12 *
8 Watt Audio Amp 377,801 67 *
Aircraft Radio Communications Receiver 283,002 49 *
Crystal Radio 162,202 53 *
Digital Volume Control 342,260 47 *
Electronic Stethoscope 325,354 142 *
FET Audio Mixer 347,112 41
FM Transmitter 1,015,990 420
Guitar Fuzz Effect 251,203 54 *
Microphone Mixer Anatoly I. Shikhatov 254,004 26 *
Mono To Stereo Synthesizer oRbEq 137,356 18 *
One Tube Regenerative Radio NEW! 148,209 4 *
Op Amp Radio 393,970 80 *
Single Chip AM Radio NEW! 102,786 3 *
Single Chip FM Radio NEW! 176,119 1 *
Sound Level Meter 345,420 51 *
Stereo Tube Amplifier Weslee Kinsler 271,690 15 *
Tone Control 313,355 31
Transistor Organ 203,282 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 166,179 27 *
FM Telephone Bug 237,722 57
Phone Busy Indicator 216,549 24 *
Remote Telephone Ringer 120,730 3 *
Ringing Phone Light Flasher 222,030 35 *
Simple Phone Tap Derek Tombrello 386,456 98 *
Telephone Hold Button 131,638 10
Telephone Recorder 219,398 55 *

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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.