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
Saturday, August 08, 2020
12VDC Fluorescent Lamp Driver28
Black Light28
Yesterday
Friday, August 07, 2020
12VDC To 120VAC Inverter48
Power Supply30
Of All Time 12VDC To 120VAC Inverter1,469,042
FM Transmitter970,703

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 210,808 61 *
Car Alarm Arming Horn Beep Canceller bob 121,919 6 *
Wireless Auto Tachometer 324,115 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 147,141 29 *
Parallel (Printer) Port Interface 264,331 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 424,251 63 *
3 Channel Spectrum Analyzer 204,152 20
40W Fluorescent Lamp Inverter Bart Milnes 312,962 60 *
Adjustable Strobe Light 288,545 36
Black Light 253,520 29
Colour (Sound) Organ 270,749 36
Electronic Dice NEW! 172,381 10 *
Fantastic Atom Expander 185,387 25
Flash Slave Trigger 202,930 18 *
Infa-Red Remote Control 612,653 216 *
IR Remote Extender NEW! 114,508 2 *
IR Remote Jammer Carl 245,175 110 *
IR Remote Switch NEW! 142,800 9 *
LASER Transmitter/Receiver 390,018 92
LED Chaser 427,032 83 *
LED Metronome NEW! 89,335 3 *
LED Thermometer 193,130 22 *
Light/Dark Detector 291,317 90 *
Simple Colour Organ 125,232 10 *
Strobe Light 259,629 27 *
TRIAC Light Dimmer 532,361 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 340,032 122 *
Electromagnetic Levitator NEW! 129,935 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 896,191 214 *
AC Motor Speed Controller 366,555 29 *
Air Flow Detector 237,061 54 *
Digital Keypad Combination Lock 182,543 20
Low Voltage Alarm 212,087 58 *
Pine Racecar Victory Judge 91,039 1 *
Pulse Width Modulation DC Motor Control 630,233 94
Rain Detector 290,203 112 *
Simple Lie Detector 542,837 323
Simple Polarity Tester Dudley LeRoux 149,553 13 *
Simple Servo Controller 205,552 22 *
Simple Touch Switch NEW! 155,203 5 *
Simple Two Speed Contactor DC Motor Controller 190,565 21 *
Stepper Motor Controller 719,523 120 *
Time Delay Relay 538,645 88
Time Delay Relay II jawaharlal@excite.com 227,868 39 *
Touch Switch 274,146 51 *
Video Activated Relay 109,036 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 164,842 10 *
Water Detector With Sump/Bilge Pump Controller 136,188 18 *
Wire Loop Alarm Alex Meaden 192,027 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 294,693 25 *
12VDC To 120VAC Inverter 1,469,042 689
6V to 12V Converter 500,289 121
Automatic 12V Lead Acid Battery Charger 908,651 247
Automatic Load Sensing Power Switch 150,599 16 *
Car Battery Charger 859,344 159 *
Dual Polarity Power Supply 355,109 84 *
Fixed Voltage Power Supply 294,120 52 *
High Current Power Supply 318,247 65 *
High Voltage High Current Power Supply 237,438 35 *
LASER Power Supply 277,307 28
Portable CD Player Adapter For Car 195,960 12 *
Power Supply 716,529 259 *
Solid State Tesla Coil NEW! 131,214 4
Solid State Tesla Coil/High Voltage Generator 418,182 50
Transformerless Power Supply 444,434 117 *
Voltage Inverter 317,750 51 *
Voltage Inverter II 186,655 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 566,630 182
3 Watt FM Transmitter Rae XL Tkacik 315,070 82 *
50 Watt Amplifier 487,971 74
8 Note Tune Player 128,184 12 *
8 Watt Audio Amp 352,111 67 *
Aircraft Radio Communications Receiver 258,499 49 *
Crystal Radio 148,134 53 *
Digital Volume Control 315,379 47 *
Electronic Stethoscope 294,157 141 *
FET Audio Mixer 324,425 41
FM Transmitter 970,703 419
Guitar Fuzz Effect 227,876 52 *
Microphone Mixer Anatoly I. Shikhatov 234,305 26 *
Mono To Stereo Synthesizer oRbEq 117,200 18 *
One Tube Regenerative Radio NEW! 119,950 4 *
Op Amp Radio 365,941 80 *
Single Chip AM Radio NEW! 88,926 2 *
Single Chip FM Radio NEW! 154,529 1 *
Sound Level Meter 324,782 51 *
Stereo Tube Amplifier Weslee Kinsler 251,777 15 *
Tone Control 290,077 31
Transistor Organ 181,737 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 150,749 27 *
FM Telephone Bug 222,424 57
Phone Busy Indicator 200,990 24 *
Remote Telephone Ringer 105,706 3 *
Ringing Phone Light Flasher 199,122 35 *
Simple Phone Tap Derek Tombrello 369,445 98 *
Telephone Hold Button 115,684 10
Telephone Recorder 202,031 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.