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, February 22, 2018
Dual Polarity Power Supply86
Stepper Motor Controller68
Yesterday
Wednesday, February 21, 2018
12VDC To 120VAC Inverter94
Dual Polarity Power Supply87
Of All Time 12VDC To 120VAC Inverter1,403,945
FM Transmitter929,808

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 187,904 61 *
Car Alarm Arming Horn Beep Canceller bob 99,798 6 *
Wireless Auto Tachometer 295,438 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 131,446 29 *
Parallel (Printer) Port Interface 234,135 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 390,320 62 *
3 Channel Spectrum Analyzer 182,927 20
40W Fluorescent Lamp Inverter Bart Milnes 288,239 60 *
Adjustable Strobe Light 260,865 36
Black Light 222,775 29
Colour (Sound) Organ 245,058 36
Electronic Dice NEW! 149,047 9 *
Fantastic Atom Expander 159,254 25
Flash Slave Trigger 179,955 17 *
Infa-Red Remote Control 577,928 216 *
IR Remote Extender NEW! 89,524 2 *
IR Remote Jammer Carl 222,617 110 *
IR Remote Switch NEW! 119,775 9 *
LASER Transmitter/Receiver 360,566 92
LED Chaser 403,949 83 *
LED Metronome NEW! 79,136 3 *
LED Thermometer 174,029 22 *
Light/Dark Detector 273,035 89 *
Simple Colour Organ 109,368 10 *
Strobe Light 241,227 27 *
TRIAC Light Dimmer 452,988 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 309,779 122 *
Electromagnetic Levitator NEW! 110,413 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 853,278 214 *
AC Motor Speed Controller 335,188 29 *
Air Flow Detector 217,472 54 *
Digital Keypad Combination Lock 161,330 20
Low Voltage Alarm 190,598 58 *
Pine Racecar Victory Judge 73,925 1 *
Pulse Width Modulation DC Motor Control 607,156 93
Rain Detector 269,859 112 *
Simple Lie Detector 513,997 323
Simple Polarity Tester Dudley LeRoux 126,139 13 *
Simple Servo Controller 182,482 22 *
Simple Touch Switch NEW! 136,944 5 *
Simple Two Speed Contactor DC Motor Controller 173,931 21 *
Stepper Motor Controller 673,830 120 *
Time Delay Relay 508,402 88
Time Delay Relay II jawaharlal@excite.com 202,362 39 *
Touch Switch 254,082 51 *
Video Activated Relay 92,093 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 143,660 10 *
Water Detector With Sump/Bilge Pump Controller 117,676 18 *
Wire Loop Alarm Alex Meaden 175,627 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 264,600 25 *
12VDC To 120VAC Inverter 1,403,945 687
6V to 12V Converter 445,030 121
Automatic 12V Lead Acid Battery Charger 866,806 246
Automatic Load Sensing Power Switch 131,147 15 *
Car Battery Charger 818,278 159 *
Dual Polarity Power Supply 311,556 84 *
Fixed Voltage Power Supply 275,158 52 *
High Current Power Supply 292,529 64 *
High Voltage High Current Power Supply 219,021 35 *
LASER Power Supply 249,700 28
Portable CD Player Adapter For Car 176,981 12 *
Power Supply 682,291 259 *
Solid State Tesla Coil NEW! 114,970 3
Solid State Tesla Coil/High Voltage Generator 383,172 50
Transformerless Power Supply 415,684 117 *
Voltage Inverter 301,187 51 *
Voltage Inverter II 170,923 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 541,491 182
3 Watt FM Transmitter Rae XL Tkacik 292,769 81 *
50 Watt Amplifier 457,611 74
8 Note Tune Player 113,310 12 *
8 Watt Audio Amp 325,089 67 *
Aircraft Radio Communications Receiver 229,190 49 *
Crystal Radio 134,151 53 *
Digital Volume Control 293,549 47 *
Electronic Stethoscope 269,668 141 *
FET Audio Mixer 300,315 40
FM Transmitter 929,808 418
Guitar Fuzz Effect 202,461 52 *
Microphone Mixer Anatoly I. Shikhatov 211,662 26 *
Mono To Stereo Synthesizer oRbEq 96,159 18 *
One Tube Regenerative Radio NEW! 101,691 4 *
Op Amp Radio 339,488 80 *
Single Chip AM Radio NEW! 78,047 2 *
Single Chip FM Radio NEW! 130,146 1 *
Sound Level Meter 301,256 51 *
Stereo Tube Amplifier Weslee Kinsler 229,846 15 *
Tone Control 265,343 31
Transistor Organ 160,140 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 135,225 27 *
FM Telephone Bug 199,653 57
Phone Busy Indicator 180,400 24 *
Remote Telephone Ringer 91,319 3 *
Ringing Phone Light Flasher 178,859 33 *
Simple Phone Tap Derek Tombrello 327,496 98 *
Telephone Hold Button 95,553 9
Telephone Recorder 180,338 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.