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, May 02, 2016
7 Segment LED Counter89
Automatic 12V Lead Acid Battery Charger80
Yesterday
Sunday, May 01, 2016
12VDC To 120VAC Inverter114
Automatic 12V Lead Acid Battery Charger81
Of All Time 12VDC To 120VAC Inverter1,339,553
FM Transmitter896,415

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 177,980 61 *
Car Alarm Arming Horn Beep Canceller bob 92,015 6 *
Wireless Auto Tachometer 283,252 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 121,693 29 *
Parallel (Printer) Port Interface 223,659 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 372,913 62 *
3 Channel Spectrum Analyzer 167,534 20
40W Fluorescent Lamp Inverter Bart Milnes 274,660 60 *
Adjustable Strobe Light 245,541 36
Black Light 208,686 29
Colour (Sound) Organ 231,357 35
Electronic Dice NEW! 136,976 8 *
Fantastic Atom Expander 146,387 25
Flash Slave Trigger 169,147 17 *
Infa-Red Remote Control 559,730 216 *
IR Remote Extender NEW! 78,225 2 *
IR Remote Jammer Carl 209,356 110 *
IR Remote Switch NEW! 109,120 9 *
LASER Transmitter/Receiver 343,262 91
LED Chaser 387,946 83 *
LED Metronome NEW! 70,433 3 *
LED Thermometer 162,918 22 *
Light/Dark Detector 253,786 89 *
Simple Colour Organ 100,639 10 *
Strobe Light 229,979 27 *
TRIAC Light Dimmer 433,907 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 298,254 122 *
Electromagnetic Levitator NEW! 98,010 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 824,436 214 *
AC Motor Speed Controller 312,268 29 *
Air Flow Detector 204,071 54 *
Digital Keypad Combination Lock 150,325 20
Low Voltage Alarm 175,766 58 *
Pine Racecar Victory Judge 65,926 1 *
Pulse Width Modulation DC Motor Control 585,132 93
Rain Detector 257,136 112 *
Simple Lie Detector 494,657 323
Simple Polarity Tester Dudley LeRoux 114,285 13 *
Simple Servo Controller 169,907 22 *
Simple Touch Switch NEW! 125,473 5 *
Simple Two Speed Contactor DC Motor Controller 162,827 21 *
Stepper Motor Controller 643,180 120 *
Time Delay Relay 484,076 86
Time Delay Relay II jawaharlal@excite.com 189,650 39 *
Touch Switch 241,507 51 *
Video Activated Relay 82,380 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 132,861 10 *
Water Detector With Sump/Bilge Pump Controller 108,823 18 *
Wire Loop Alarm Alex Meaden 164,403 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 241,213 25 *
12VDC To 120VAC Inverter 1,339,553 686
6V to 12V Converter 417,950 121
Automatic 12V Lead Acid Battery Charger 821,195 243
Automatic Load Sensing Power Switch 119,352 15 *
Car Battery Charger 786,590 159 *
Dual Polarity Power Supply 281,351 84 *
Fixed Voltage Power Supply 261,225 52 *
High Current Power Supply 276,267 64 *
High Voltage High Current Power Supply 206,715 35 *
LASER Power Supply 233,189 28
Portable CD Player Adapter For Car 162,824 12 *
Power Supply 653,461 259 *
Solid State Tesla Coil NEW! 102,550 3
Solid State Tesla Coil/High Voltage Generator 357,340 49
Transformerless Power Supply 397,584 116 *
Voltage Inverter 284,614 51 *
Voltage Inverter II 162,617 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 519,564 182
3 Watt FM Transmitter Rae XL Tkacik 276,095 81 *
50 Watt Amplifier 434,845 74
8 Note Tune Player 103,809 12 *
8 Watt Audio Amp 305,851 67 *
Aircraft Radio Communications Receiver 212,270 49 *
Crystal Radio 124,078 53 *
Digital Volume Control 278,242 46 *
Electronic Stethoscope 251,022 141 *
FET Audio Mixer 281,682 40
FM Transmitter 896,415 418
Guitar Fuzz Effect 187,867 52 *
Microphone Mixer Anatoly I. Shikhatov 196,257 25 *
Mono To Stereo Synthesizer oRbEq 86,177 17 *
One Tube Regenerative Radio NEW! 87,988 4 *
Op Amp Radio 319,477 80 *
Single Chip AM Radio NEW! 68,772 2 *
Single Chip FM Radio NEW! 115,366 0 *
Sound Level Meter 287,204 51 *
Stereo Tube Amplifier Weslee Kinsler 218,010 15 *
Tone Control 248,530 31
Transistor Organ 148,201 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 127,212 27 *
FM Telephone Bug 189,747 57
Phone Busy Indicator 161,178 24 *
Remote Telephone Ringer 83,824 3 *
Ringing Phone Light Flasher 164,862 33 *
Simple Phone Tap Derek Tombrello 316,421 98 *
Telephone Hold Button 85,355 9
Telephone Recorder 169,829 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.