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
Sunday, August 19, 2018
Dual Polarity Power Supply21
Stepper Motor Controller17
Yesterday
Saturday, August 18, 2018
Colour (Sound) Organ234
Dual Polarity Power Supply217
Of All Time 12VDC To 120VAC Inverter1,416,567
FM Transmitter937,330

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 190,666 61 *
Car Alarm Arming Horn Beep Canceller bob 102,455 6 *
Wireless Auto Tachometer 298,201 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 133,373 29 *
Parallel (Printer) Port Interface 236,880 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 394,016 63 *
3 Channel Spectrum Analyzer 186,801 20
40W Fluorescent Lamp Inverter Bart Milnes 290,717 60 *
Adjustable Strobe Light 264,460 36
Black Light 226,321 29
Colour (Sound) Organ 248,685 36
Electronic Dice NEW! 151,722 10 *
Fantastic Atom Expander 162,428 25
Flash Slave Trigger 182,747 18 *
Infa-Red Remote Control 583,288 216 *
IR Remote Extender NEW! 92,754 2 *
IR Remote Jammer Carl 226,303 110 *
IR Remote Switch NEW! 122,701 9 *
LASER Transmitter/Receiver 364,438 92
LED Chaser 407,852 83 *
LED Metronome NEW! 81,415 3 *
LED Thermometer 176,972 22 *
Light/Dark Detector 276,039 90 *
Simple Colour Organ 111,677 10 *
Strobe Light 243,688 27 *
TRIAC Light Dimmer 456,613 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 312,802 122 *
Electromagnetic Levitator NEW! 113,460 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 860,091 214 *
AC Motor Speed Controller 340,333 29 *
Air Flow Detector 220,637 54 *
Digital Keypad Combination Lock 163,996 20
Low Voltage Alarm 194,266 58 *
Pine Racecar Victory Judge 76,072 1 *
Pulse Width Modulation DC Motor Control 611,208 93
Rain Detector 273,300 112 *
Simple Lie Detector 519,072 323
Simple Polarity Tester Dudley LeRoux 128,997 13 *
Simple Servo Controller 185,246 22 *
Simple Touch Switch NEW! 139,737 5 *
Simple Two Speed Contactor DC Motor Controller 176,074 21 *
Stepper Motor Controller 683,714 120 *
Time Delay Relay 513,822 88
Time Delay Relay II jawaharlal@excite.com 205,923 39 *
Touch Switch 257,238 51 *
Video Activated Relay 94,982 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 146,823 10 *
Water Detector With Sump/Bilge Pump Controller 120,561 18 *
Wire Loop Alarm Alex Meaden 178,167 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 269,698 25 *
12VDC To 120VAC Inverter 1,416,567 688
6V to 12V Converter 451,870 121
Automatic 12V Lead Acid Battery Charger 874,525 246
Automatic Load Sensing Power Switch 134,164 16 *
Car Battery Charger 826,903 159 *
Dual Polarity Power Supply 324,048 84 *
Fixed Voltage Power Supply 278,162 52 *
High Current Power Supply 295,710 65 *
High Voltage High Current Power Supply 221,722 35 *
LASER Power Supply 253,381 28
Portable CD Player Adapter For Car 179,932 12 *
Power Supply 688,281 259 *
Solid State Tesla Coil NEW! 118,469 4
Solid State Tesla Coil/High Voltage Generator 388,696 50
Transformerless Power Supply 419,173 117 *
Voltage Inverter 304,539 51 *
Voltage Inverter II 173,210 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 546,485 182
3 Watt FM Transmitter Rae XL Tkacik 296,245 82 *
50 Watt Amplifier 463,125 74
8 Note Tune Player 115,455 12 *
8 Watt Audio Amp 328,930 67 *
Aircraft Radio Communications Receiver 233,091 49 *
Crystal Radio 136,543 53 *
Digital Volume Control 296,744 47 *
Electronic Stethoscope 273,903 141 *
FET Audio Mixer 305,389 41
FM Transmitter 937,330 419
Guitar Fuzz Effect 205,961 52 *
Microphone Mixer Anatoly I. Shikhatov 215,036 26 *
Mono To Stereo Synthesizer oRbEq 98,559 18 *
One Tube Regenerative Radio NEW! 104,783 4 *
Op Amp Radio 344,665 80 *
Single Chip AM Radio NEW! 80,306 2 *
Single Chip FM Radio NEW! 133,570 1 *
Sound Level Meter 304,532 51 *
Stereo Tube Amplifier Weslee Kinsler 232,502 15 *
Tone Control 268,532 31
Transistor Organ 163,290 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 137,357 27 *
FM Telephone Bug 202,355 57
Phone Busy Indicator 184,466 24 *
Remote Telephone Ringer 93,247 3 *
Ringing Phone Light Flasher 182,087 34 *
Simple Phone Tap Derek Tombrello 329,548 98 *
Telephone Hold Button 97,701 10
Telephone Recorder 183,095 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.