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, October 23, 2017
12VDC To 120VAC Inverter34
Dual Polarity Power Supply31
Yesterday
Sunday, October 22, 2017
Dual Polarity Power Supply91
12VDC To 120VAC Inverter90
Of All Time 12VDC To 120VAC Inverter1,392,741
FM Transmitter924,093

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 186,025 61 *
Car Alarm Arming Horn Beep Canceller bob 98,337 6 *
Wireless Auto Tachometer 293,209 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 129,807 29 *
Parallel (Printer) Port Interface 232,159 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 387,450 62 *
3 Channel Spectrum Analyzer 180,202 20
40W Fluorescent Lamp Inverter Bart Milnes 285,909 60 *
Adjustable Strobe Light 258,267 36
Black Light 220,293 29
Colour (Sound) Organ 242,511 36
Electronic Dice NEW! 147,283 9 *
Fantastic Atom Expander 157,006 25
Flash Slave Trigger 178,153 17 *
Infa-Red Remote Control 574,885 216 *
IR Remote Extender NEW! 87,315 2 *
IR Remote Jammer Carl 220,302 110 *
IR Remote Switch NEW! 117,225 9 *
LASER Transmitter/Receiver 357,915 92
LED Chaser 400,889 83 *
LED Metronome NEW! 77,497 3 *
LED Thermometer 171,823 22 *
Light/Dark Detector 270,571 89 *
Simple Colour Organ 107,877 10 *
Strobe Light 239,285 27 *
TRIAC Light Dimmer 449,520 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 307,449 122 *
Electromagnetic Levitator NEW! 108,228 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 848,585 214 *
AC Motor Speed Controller 331,691 29 *
Air Flow Detector 215,327 54 *
Digital Keypad Combination Lock 159,162 20
Low Voltage Alarm 188,361 58 *
Pine Racecar Victory Judge 72,464 1 *
Pulse Width Modulation DC Motor Control 603,633 93
Rain Detector 267,974 112 *
Simple Lie Detector 510,792 323
Simple Polarity Tester Dudley LeRoux 123,984 13 *
Simple Servo Controller 180,261 22 *
Simple Touch Switch NEW! 134,845 5 *
Simple Two Speed Contactor DC Motor Controller 171,913 21 *
Stepper Motor Controller 666,842 120 *
Time Delay Relay 504,486 88
Time Delay Relay II jawaharlal@excite.com 200,127 39 *
Touch Switch 251,882 51 *
Video Activated Relay 90,392 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 141,701 10 *
Water Detector With Sump/Bilge Pump Controller 115,493 18 *
Wire Loop Alarm Alex Meaden 173,842 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 261,274 25 *
12VDC To 120VAC Inverter 1,392,741 687
6V to 12V Converter 440,090 121
Automatic 12V Lead Acid Battery Charger 858,612 246
Automatic Load Sensing Power Switch 128,956 15 *
Car Battery Charger 811,936 159 *
Dual Polarity Power Supply 303,989 84 *
Fixed Voltage Power Supply 273,033 52 *
High Current Power Supply 290,136 64 *
High Voltage High Current Power Supply 217,040 35 *
LASER Power Supply 247,009 28
Portable CD Player Adapter For Car 174,621 12 *
Power Supply 677,429 259 *
Solid State Tesla Coil NEW! 112,244 3
Solid State Tesla Coil/High Voltage Generator 378,798 50
Transformerless Power Supply 412,902 117 *
Voltage Inverter 298,718 51 *
Voltage Inverter II 169,343 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 537,773 182
3 Watt FM Transmitter Rae XL Tkacik 289,721 81 *
50 Watt Amplifier 453,663 74
8 Note Tune Player 111,592 12 *
8 Watt Audio Amp 322,023 67 *
Aircraft Radio Communications Receiver 226,265 49 *
Crystal Radio 132,471 53 *
Digital Volume Control 290,817 47 *
Electronic Stethoscope 266,495 141 *
FET Audio Mixer 296,678 40
FM Transmitter 924,093 418
Guitar Fuzz Effect 200,054 52 *
Microphone Mixer Anatoly I. Shikhatov 208,735 26 *
Mono To Stereo Synthesizer oRbEq 94,455 18 *
One Tube Regenerative Radio NEW! 99,241 4 *
Op Amp Radio 335,783 80 *
Single Chip AM Radio NEW! 76,323 2 *
Single Chip FM Radio NEW! 127,398 1 *
Sound Level Meter 298,598 51 *
Stereo Tube Amplifier Weslee Kinsler 227,786 15 *
Tone Control 262,553 31
Transistor Organ 158,187 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 133,828 27 *
FM Telephone Bug 197,973 57
Phone Busy Indicator 177,261 24 *
Remote Telephone Ringer 89,960 3 *
Ringing Phone Light Flasher 176,404 33 *
Simple Phone Tap Derek Tombrello 325,657 98 *
Telephone Hold Button 94,157 9
Telephone Recorder 178,474 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.