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, April 23, 2014
12VDC To 120VAC Inverter225
Automatic 12V Lead Acid Battery Charger199
Yesterday
Tuesday, April 22, 2014
12VDC To 120VAC Inverter297
Automatic 12V Lead Acid Battery Charger292
Of All Time 12VDC To 120VAC Inverter1,205,843
FM Transmitter814,163

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 160,367 60 *
Car Alarm Arming Horn Beep Canceller bob 81,360 6 *
Wireless Auto Tachometer 247,675 57

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 106,560 29 *
Parallel (Printer) Port Interface 206,783 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 341,202 61 *
3 Channel Spectrum Analyzer 141,761 19
40W Fluorescent Lamp Inverter Bart Milnes 249,409 60 *
Adjustable Strobe Light 220,180 36
Black Light 187,541 29
Colour (Sound) Organ 210,126 34
Electronic Dice NEW! 115,824 8 *
Fantastic Atom Expander 126,964 24
Flash Slave Trigger 153,357 17 *
Infa-Red Remote Control 489,177 216 *
IR Remote Extender NEW! 61,529 2 *
IR Remote Jammer Carl 188,053 109 *
IR Remote Switch NEW! 90,070 9 *
LASER Transmitter/Receiver 309,613 91
LED Chaser 337,111 83 *
LED Metronome NEW! 58,242 3 *
LED Thermometer 146,677 22 *
Light/Dark Detector 227,951 89 *
Simple Colour Organ 88,349 10 *
Strobe Light 206,800 27 *
TRIAC Light Dimmer 380,342 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 273,731 122 *
Electromagnetic Levitator NEW! 81,011 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 708,455 212 *
AC Motor Speed Controller 267,853 28 *
Air Flow Detector 175,322 54 *
Digital Keypad Combination Lock 128,795 20
Low Voltage Alarm 155,015 58 *
Pine Racecar Victory Judge 57,164 1 *
Pulse Width Modulation DC Motor Control 532,317 92
Rain Detector 226,969 110 *
Simple Lie Detector 445,587 319
Simple Polarity Tester Dudley LeRoux 96,562 13 *
Simple Servo Controller 144,032 22 *
Simple Touch Switch NEW! 101,757 5 *
Simple Two Speed Contactor DC Motor Controller 144,465 21 *
Stepper Motor Controller 585,667 120 *
Time Delay Relay 427,183 85
Time Delay Relay II jawaharlal@excite.com 170,835 39 *
Touch Switch 220,030 51 *
Video Activated Relay 68,776 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 116,073 9 *
Water Detector With Sump/Bilge Pump Controller 95,726 18 *
Wire Loop Alarm Alex Meaden 148,342 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 191,249 23 *
12VDC To 120VAC Inverter 1,205,843 682
6V to 12V Converter 366,900 121
Automatic 12V Lead Acid Battery Charger 696,621 236
Automatic Load Sensing Power Switch 104,197 14 *
Car Battery Charger 729,058 158 *
Dual Polarity Power Supply 251,682 84 *
Fixed Voltage Power Supply 233,535 52 *
High Current Power Supply 241,418 64 *
High Voltage High Current Power Supply 186,975 34 *
LASER Power Supply 207,177 28
Portable CD Player Adapter For Car 145,861 12 *
Power Supply 592,932 258 *
Solid State Tesla Coil NEW! 82,941 2
Solid State Tesla Coil/High Voltage Generator 310,763 49
Transformerless Power Supply 358,673 116 *
Voltage Inverter 256,736 51 *
Voltage Inverter II 144,573 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 450,700 182
3 Watt FM Transmitter Rae XL Tkacik 244,816 77 *
50 Watt Amplifier 389,930 73
8 Note Tune Player 91,173 12 *
8 Watt Audio Amp 268,736 63 *
Aircraft Radio Communications Receiver 180,291 48 *
Crystal Radio 109,001 53 *
Digital Volume Control 255,777 46 *
Electronic Stethoscope 201,128 138 *
FET Audio Mixer 230,074 40
FM Transmitter 814,163 414
Guitar Fuzz Effect 163,001 51 *
Microphone Mixer Anatoly I. Shikhatov 173,090 25 *
Mono To Stereo Synthesizer oRbEq 69,347 16 *
One Tube Regenerative Radio NEW! 65,657 4 *
Op Amp Radio 274,199 80 *
Single Chip AM Radio NEW! 46,646 2 *
Single Chip FM Radio NEW! 83,466 0 *
Sound Level Meter 259,238 50 *
Stereo Tube Amplifier Weslee Kinsler 188,582 15 *
Tone Control 222,492 29
Transistor Organ 129,046 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 115,917 27 *
FM Telephone Bug 172,279 57
Phone Busy Indicator 129,022 22 *
Remote Telephone Ringer 74,514 3 *
Ringing Phone Light Flasher 145,571 32 *
Simple Phone Tap Derek Tombrello 292,582 98 *
Telephone Hold Button 72,310 9
Telephone Recorder 154,898 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.