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
Tuesday, September 25, 2018
Dual Polarity Power Supply146
Stepper Motor Controller124
Yesterday
Monday, September 24, 2018
Dual Polarity Power Supply112
Stepper Motor Controller86
Of All Time 12VDC To 120VAC Inverter1,418,623
FM Transmitter938,633

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 191,700 61 *
Car Alarm Arming Horn Beep Canceller bob 103,360 6 *
Wireless Auto Tachometer 298,781 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 133,776 29 *
Parallel (Printer) Port Interface 237,417 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 394,677 63 *
3 Channel Spectrum Analyzer 187,935 20
40W Fluorescent Lamp Inverter Bart Milnes 291,423 60 *
Adjustable Strobe Light 265,609 36
Black Light 227,545 29
Colour (Sound) Organ 249,320 36
Electronic Dice NEW! 152,225 10 *
Fantastic Atom Expander 163,435 25
Flash Slave Trigger 183,744 18 *
Infa-Red Remote Control 584,698 216 *
IR Remote Extender NEW! 93,253 2 *
IR Remote Jammer Carl 227,456 110 *
IR Remote Switch NEW! 123,204 9 *
LASER Transmitter/Receiver 365,572 92
LED Chaser 408,936 83 *
LED Metronome NEW! 81,911 3 *
LED Thermometer 178,038 22 *
Light/Dark Detector 276,484 90 *
Simple Colour Organ 112,524 10 *
Strobe Light 244,624 27 *
TRIAC Light Dimmer 457,277 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 313,550 122 *
Electromagnetic Levitator NEW! 114,524 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 861,491 214 *
AC Motor Speed Controller 341,709 29 *
Air Flow Detector 221,654 54 *
Digital Keypad Combination Lock 164,997 20
Low Voltage Alarm 195,347 58 *
Pine Racecar Victory Judge 76,920 1 *
Pulse Width Modulation DC Motor Control 611,951 93
Rain Detector 274,515 112 *
Simple Lie Detector 520,283 323
Simple Polarity Tester Dudley LeRoux 130,033 13 *
Simple Servo Controller 185,677 22 *
Simple Touch Switch NEW! 140,754 5 *
Simple Two Speed Contactor DC Motor Controller 176,441 21 *
Stepper Motor Controller 687,754 120 *
Time Delay Relay 515,117 88
Time Delay Relay II jawaharlal@excite.com 207,348 39 *
Touch Switch 258,309 51 *
Video Activated Relay 95,854 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 147,327 10 *
Water Detector With Sump/Bilge Pump Controller 121,511 18 *
Wire Loop Alarm Alex Meaden 178,613 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 270,629 25 *
12VDC To 120VAC Inverter 1,418,623 688
6V to 12V Converter 453,089 121
Automatic 12V Lead Acid Battery Charger 875,619 246
Automatic Load Sensing Power Switch 134,718 16 *
Car Battery Charger 828,344 159 *
Dual Polarity Power Supply 329,308 84 *
Fixed Voltage Power Supply 278,642 52 *
High Current Power Supply 296,248 65 *
High Voltage High Current Power Supply 222,209 35 *
LASER Power Supply 254,012 28
Portable CD Player Adapter For Car 180,466 12 *
Power Supply 689,745 259 *
Solid State Tesla Coil NEW! 119,061 4
Solid State Tesla Coil/High Voltage Generator 389,915 50
Transformerless Power Supply 419,766 117 *
Voltage Inverter 305,130 51 *
Voltage Inverter II 173,589 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 547,269 182
3 Watt FM Transmitter Rae XL Tkacik 296,874 82 *
50 Watt Amplifier 464,188 74
8 Note Tune Player 115,853 12 *
8 Watt Audio Amp 329,693 67 *
Aircraft Radio Communications Receiver 233,842 49 *
Crystal Radio 136,944 53 *
Digital Volume Control 297,347 47 *
Electronic Stethoscope 274,542 141 *
FET Audio Mixer 306,265 41
FM Transmitter 938,633 419
Guitar Fuzz Effect 206,584 52 *
Microphone Mixer Anatoly I. Shikhatov 215,613 26 *
Mono To Stereo Synthesizer oRbEq 99,052 18 *
One Tube Regenerative Radio NEW! 105,354 4 *
Op Amp Radio 345,439 80 *
Single Chip AM Radio NEW! 80,764 2 *
Single Chip FM Radio NEW! 134,238 1 *
Sound Level Meter 305,120 51 *
Stereo Tube Amplifier Weslee Kinsler 233,016 15 *
Tone Control 269,167 31
Transistor Organ 163,825 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 137,704 27 *
FM Telephone Bug 202,837 57
Phone Busy Indicator 184,956 24 *
Remote Telephone Ringer 93,576 3 *
Ringing Phone Light Flasher 182,656 34 *
Simple Phone Tap Derek Tombrello 331,356 98 *
Telephone Hold Button 98,101 10
Telephone Recorder 183,637 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.