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
Monday, February 19, 2018
12VDC To 120VAC Inverter102
Dual Polarity Power Supply74
Yesterday
Sunday, February 18, 2018
Dual Polarity Power Supply95
Stepper Motor Controller79
Of All Time 12VDC To 120VAC Inverter1,403,689
FM Transmitter929,683

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 187,848 61 *
Car Alarm Arming Horn Beep Canceller bob 99,748 6 *
Wireless Auto Tachometer 295,384 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 131,405 29 *
Parallel (Printer) Port Interface 234,074 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 390,236 62 *
3 Channel Spectrum Analyzer 182,847 20
40W Fluorescent Lamp Inverter Bart Milnes 288,180 60 *
Adjustable Strobe Light 260,782 36
Black Light 222,699 29
Colour (Sound) Organ 244,970 36
Electronic Dice NEW! 148,988 9 *
Fantastic Atom Expander 159,192 25
Flash Slave Trigger 179,901 17 *
Infa-Red Remote Control 577,836 216 *
IR Remote Extender NEW! 89,450 2 *
IR Remote Jammer Carl 222,530 110 *
IR Remote Switch NEW! 119,707 9 *
LASER Transmitter/Receiver 360,495 92
LED Chaser 403,877 83 *
LED Metronome NEW! 79,082 3 *
LED Thermometer 173,958 22 *
Light/Dark Detector 272,963 89 *
Simple Colour Organ 109,308 10 *
Strobe Light 241,171 27 *
TRIAC Light Dimmer 452,893 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 309,716 122 *
Electromagnetic Levitator NEW! 110,359 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 853,158 214 *
AC Motor Speed Controller 335,109 29 *
Air Flow Detector 217,420 54 *
Digital Keypad Combination Lock 161,270 20
Low Voltage Alarm 190,539 58 *
Pine Racecar Victory Judge 73,865 1 *
Pulse Width Modulation DC Motor Control 607,075 93
Rain Detector 269,811 112 *
Simple Lie Detector 513,882 323
Simple Polarity Tester Dudley LeRoux 126,087 13 *
Simple Servo Controller 182,415 22 *
Simple Touch Switch NEW! 136,892 5 *
Simple Two Speed Contactor DC Motor Controller 173,875 21 *
Stepper Motor Controller 673,598 120 *
Time Delay Relay 508,278 88
Time Delay Relay II jawaharlal@excite.com 202,300 39 *
Touch Switch 254,028 51 *
Video Activated Relay 92,042 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 143,604 10 *
Water Detector With Sump/Bilge Pump Controller 117,618 18 *
Wire Loop Alarm Alex Meaden 175,573 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 264,510 25 *
12VDC To 120VAC Inverter 1,403,689 687
6V to 12V Converter 444,912 121
Automatic 12V Lead Acid Battery Charger 866,664 246
Automatic Load Sensing Power Switch 131,092 15 *
Car Battery Charger 818,076 159 *
Dual Polarity Power Supply 311,271 84 *
Fixed Voltage Power Supply 275,077 52 *
High Current Power Supply 292,455 64 *
High Voltage High Current Power Supply 218,945 35 *
LASER Power Supply 249,626 28
Portable CD Player Adapter For Car 176,900 12 *
Power Supply 682,159 259 *
Solid State Tesla Coil NEW! 114,886 3
Solid State Tesla Coil/High Voltage Generator 383,052 50
Transformerless Power Supply 415,599 117 *
Voltage Inverter 301,129 51 *
Voltage Inverter II 170,875 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 541,397 182
3 Watt FM Transmitter Rae XL Tkacik 292,690 81 *
50 Watt Amplifier 457,504 74
8 Note Tune Player 113,261 12 *
8 Watt Audio Amp 325,000 67 *
Aircraft Radio Communications Receiver 229,113 49 *
Crystal Radio 134,108 53 *
Digital Volume Control 293,483 47 *
Electronic Stethoscope 269,570 141 *
FET Audio Mixer 300,226 40
FM Transmitter 929,683 418
Guitar Fuzz Effect 202,398 52 *
Microphone Mixer Anatoly I. Shikhatov 211,570 26 *
Mono To Stereo Synthesizer oRbEq 96,108 18 *
One Tube Regenerative Radio NEW! 101,631 4 *
Op Amp Radio 339,414 80 *
Single Chip AM Radio NEW! 77,997 2 *
Single Chip FM Radio NEW! 130,086 1 *
Sound Level Meter 301,177 51 *
Stereo Tube Amplifier Weslee Kinsler 229,786 15 *
Tone Control 265,270 31
Transistor Organ 160,074 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 135,179 27 *
FM Telephone Bug 199,611 57
Phone Busy Indicator 180,300 24 *
Remote Telephone Ringer 91,279 3 *
Ringing Phone Light Flasher 178,800 33 *
Simple Phone Tap Derek Tombrello 327,455 98 *
Telephone Hold Button 95,510 9
Telephone Recorder 180,292 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.