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, January 28, 2020
12VDC Fluorescent Lamp Driver40
12VDC To 120VAC Inverter29
Yesterday
Monday, January 27, 2020
12VDC To 120VAC Inverter47
Power Supply46
Of All Time 12VDC To 120VAC Inverter1,456,483
FM Transmitter962,337

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 204,130 61 *
Car Alarm Arming Horn Beep Canceller bob 115,212 6 *
Wireless Auto Tachometer 316,445 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 142,661 29 *
Parallel (Printer) Port Interface 256,377 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 413,657 63 *
3 Channel Spectrum Analyzer 198,958 20
40W Fluorescent Lamp Inverter Bart Milnes 305,918 60 *
Adjustable Strobe Light 280,763 36
Black Light 244,579 29
Colour (Sound) Organ 263,402 36
Electronic Dice NEW! 165,443 10 *
Fantastic Atom Expander 177,757 25
Flash Slave Trigger 195,851 18 *
Infa-Red Remote Control 603,370 216 *
IR Remote Extender NEW! 106,882 2 *
IR Remote Jammer Carl 239,000 110 *
IR Remote Switch NEW! 135,929 9 *
LASER Transmitter/Receiver 381,779 92
LED Chaser 421,629 83 *
LED Metronome NEW! 87,390 3 *
LED Thermometer 188,052 22 *
Light/Dark Detector 286,118 90 *
Simple Colour Organ 120,869 10 *
Strobe Light 254,604 27 *
TRIAC Light Dimmer 475,645 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 329,735 122 *
Electromagnetic Levitator NEW! 125,053 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 886,687 214 *
AC Motor Speed Controller 360,270 29 *
Air Flow Detector 232,033 54 *
Digital Keypad Combination Lock 177,739 20
Low Voltage Alarm 206,855 58 *
Pine Racecar Victory Judge 86,844 1 *
Pulse Width Modulation DC Motor Control 624,547 94
Rain Detector 285,356 112 *
Simple Lie Detector 537,007 323
Simple Polarity Tester Dudley LeRoux 142,346 13 *
Simple Servo Controller 200,588 22 *
Simple Touch Switch NEW! 150,606 5 *
Simple Two Speed Contactor DC Motor Controller 185,763 21 *
Stepper Motor Controller 712,221 120 *
Time Delay Relay 531,758 88
Time Delay Relay II jawaharlal@excite.com 220,571 39 *
Touch Switch 268,873 51 *
Video Activated Relay 104,564 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 159,560 10 *
Water Detector With Sump/Bilge Pump Controller 130,626 18 *
Wire Loop Alarm Alex Meaden 187,503 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 288,746 25 *
12VDC To 120VAC Inverter 1,456,483 689
6V to 12V Converter 483,313 121
Automatic 12V Lead Acid Battery Charger 899,994 247
Automatic Load Sensing Power Switch 145,253 16 *
Car Battery Charger 851,280 159 *
Dual Polarity Power Supply 351,866 84 *
Fixed Voltage Power Supply 289,055 52 *
High Current Power Supply 311,274 65 *
High Voltage High Current Power Supply 232,251 35 *
LASER Power Supply 271,598 28
Portable CD Player Adapter For Car 190,670 12 *
Power Supply 709,358 259 *
Solid State Tesla Coil NEW! 128,023 4
Solid State Tesla Coil/High Voltage Generator 410,659 50
Transformerless Power Supply 438,536 117 *
Voltage Inverter 314,004 51 *
Voltage Inverter II 182,035 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 560,393 182
3 Watt FM Transmitter Rae XL Tkacik 308,948 82 *
50 Watt Amplifier 481,425 74
8 Note Tune Player 123,640 12 *
8 Watt Audio Amp 345,951 67 *
Aircraft Radio Communications Receiver 252,350 49 *
Crystal Radio 145,666 53 *
Digital Volume Control 310,165 47 *
Electronic Stethoscope 288,077 141 *
FET Audio Mixer 318,638 41
FM Transmitter 962,337 419
Guitar Fuzz Effect 222,294 52 *
Microphone Mixer Anatoly I. Shikhatov 229,051 26 *
Mono To Stereo Synthesizer oRbEq 112,008 18 *
One Tube Regenerative Radio NEW! 116,916 4 *
Op Amp Radio 358,837 80 *
Single Chip AM Radio NEW! 86,722 2 *
Single Chip FM Radio NEW! 149,181 1 *
Sound Level Meter 319,513 51 *
Stereo Tube Amplifier Weslee Kinsler 246,757 15 *
Tone Control 284,248 31
Transistor Organ 176,379 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 145,963 27 *
FM Telephone Bug 217,731 57
Phone Busy Indicator 196,573 24 *
Remote Telephone Ringer 101,143 3 *
Ringing Phone Light Flasher 193,626 35 *
Simple Phone Tap Derek Tombrello 345,605 98 *
Telephone Hold Button 110,957 10
Telephone Recorder 195,758 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.