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
Thursday, May 26, 2016
12VDC To 120VAC Inverter53
Automatic 12V Lead Acid Battery Charger49
Yesterday
Wednesday, May 25, 2016
12VDC To 120VAC Inverter145
Automatic 12V Lead Acid Battery Charger95
Of All Time 12VDC To 120VAC Inverter1,342,319
FM Transmitter897,995

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 178,304 61 *
Car Alarm Arming Horn Beep Canceller bob 92,290 6 *
Wireless Auto Tachometer 283,762 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 122,079 29 *
Parallel (Printer) Port Interface 224,042 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 373,587 62 *
3 Channel Spectrum Analyzer 168,159 20
40W Fluorescent Lamp Inverter Bart Milnes 275,181 60 *
Adjustable Strobe Light 246,118 36
Black Light 209,167 29
Colour (Sound) Organ 231,829 35
Electronic Dice NEW! 137,507 8 *
Fantastic Atom Expander 146,780 25
Flash Slave Trigger 169,554 17 *
Infa-Red Remote Control 560,513 216 *
IR Remote Extender NEW! 78,575 2 *
IR Remote Jammer Carl 209,773 110 *
IR Remote Switch NEW! 109,478 9 *
LASER Transmitter/Receiver 344,114 91
LED Chaser 388,543 83 *
LED Metronome NEW! 70,734 3 *
LED Thermometer 163,330 22 *
Light/Dark Detector 254,720 89 *
Simple Colour Organ 100,912 10 *
Strobe Light 230,402 27 *
TRIAC Light Dimmer 434,557 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 298,704 122 *
Electromagnetic Levitator NEW! 98,473 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 825,898 214 *
AC Motor Speed Controller 313,214 29 *
Air Flow Detector 204,613 54 *
Digital Keypad Combination Lock 150,795 20
Low Voltage Alarm 176,298 58 *
Pine Racecar Victory Judge 66,174 1 *
Pulse Width Modulation DC Motor Control 585,954 93
Rain Detector 257,599 112 *
Simple Lie Detector 495,579 323
Simple Polarity Tester Dudley LeRoux 114,693 13 *
Simple Servo Controller 170,411 22 *
Simple Touch Switch NEW! 125,871 5 *
Simple Two Speed Contactor DC Motor Controller 163,267 21 *
Stepper Motor Controller 644,321 120 *
Time Delay Relay 485,216 86
Time Delay Relay II jawaharlal@excite.com 190,129 39 *
Touch Switch 241,995 51 *
Video Activated Relay 82,691 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 133,258 10 *
Water Detector With Sump/Bilge Pump Controller 109,185 18 *
Wire Loop Alarm Alex Meaden 164,790 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 242,555 25 *
12VDC To 120VAC Inverter 1,342,319 686
6V to 12V Converter 419,003 121
Automatic 12V Lead Acid Battery Charger 823,408 243
Automatic Load Sensing Power Switch 119,714 15 *
Car Battery Charger 787,761 159 *
Dual Polarity Power Supply 282,016 84 *
Fixed Voltage Power Supply 261,774 52 *
High Current Power Supply 276,913 64 *
High Voltage High Current Power Supply 207,202 35 *
LASER Power Supply 233,843 28
Portable CD Player Adapter For Car 163,326 12 *
Power Supply 654,603 259 *
Solid State Tesla Coil NEW! 102,978 3
Solid State Tesla Coil/High Voltage Generator 358,333 49
Transformerless Power Supply 398,404 116 *
Voltage Inverter 285,316 51 *
Voltage Inverter II 162,963 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 520,380 182
3 Watt FM Transmitter Rae XL Tkacik 276,935 81 *
50 Watt Amplifier 435,860 74
8 Note Tune Player 104,177 12 *
8 Watt Audio Amp 306,630 67 *
Aircraft Radio Communications Receiver 212,966 49 *
Crystal Radio 124,461 53 *
Digital Volume Control 278,837 46 *
Electronic Stethoscope 252,097 141 *
FET Audio Mixer 282,339 40
FM Transmitter 897,995 418
Guitar Fuzz Effect 188,418 52 *
Microphone Mixer Anatoly I. Shikhatov 196,828 25 *
Mono To Stereo Synthesizer oRbEq 86,547 17 *
One Tube Regenerative Radio NEW! 88,507 4 *
Op Amp Radio 320,333 80 *
Single Chip AM Radio NEW! 69,138 2 *
Single Chip FM Radio NEW! 115,829 0 *
Sound Level Meter 287,773 51 *
Stereo Tube Amplifier Weslee Kinsler 218,447 15 *
Tone Control 249,174 31
Transistor Organ 148,740 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 127,490 27 *
FM Telephone Bug 190,132 57
Phone Busy Indicator 162,042 24 *
Remote Telephone Ringer 84,115 3 *
Ringing Phone Light Flasher 165,330 33 *
Simple Phone Tap Derek Tombrello 316,865 98 *
Telephone Hold Button 85,814 9
Telephone Recorder 170,314 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.