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
Friday, December 19, 2014
7 Segment LED Counter368
Electronic Stethoscope216
Yesterday
Thursday, December 18, 2014
7 Segment LED Counter425
Infa-Red Remote Control252
Of All Time 12VDC To 120VAC Inverter1,260,125
FM Transmitter847,157

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 168,276 61 *
Car Alarm Arming Horn Beep Canceller bob 85,491 6 *
Wireless Auto Tachometer 263,064 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 111,453 29 *
Parallel (Printer) Port Interface 212,723 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 353,377 62 *
3 Channel Spectrum Analyzer 151,077 19
40W Fluorescent Lamp Inverter Bart Milnes 258,821 60 *
Adjustable Strobe Light 228,779 36
Black Light 194,265 29
Colour (Sound) Organ 216,910 34
Electronic Dice NEW! 123,375 8 *
Fantastic Atom Expander 134,131 24
Flash Slave Trigger 158,354 17 *
Infa-Red Remote Control 521,621 216 *
IR Remote Extender NEW! 67,366 2 *
IR Remote Jammer Carl 195,531 110 *
IR Remote Switch NEW! 96,625 9 *
LASER Transmitter/Receiver 322,511 91
LED Chaser 362,069 83 *
LED Metronome NEW! 62,040 3 *
LED Thermometer 152,279 22 *
Light/Dark Detector 235,090 89 *
Simple Colour Organ 92,037 10 *
Strobe Light 213,305 27 *
TRIAC Light Dimmer 401,505 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 280,298 122 *
Electromagnetic Levitator NEW! 86,932 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 762,700 214 *
AC Motor Speed Controller 285,408 29 *
Air Flow Detector 188,196 54 *
Digital Keypad Combination Lock 137,457 20
Low Voltage Alarm 162,985 58 *
Pine Racecar Victory Judge 60,330 1 *
Pulse Width Modulation DC Motor Control 555,652 93
Rain Detector 236,735 111 *
Simple Lie Detector 466,113 321
Simple Polarity Tester Dudley LeRoux 102,504 13 *
Simple Servo Controller 155,805 22 *
Simple Touch Switch NEW! 110,505 5 *
Simple Two Speed Contactor DC Motor Controller 151,240 21 *
Stepper Motor Controller 608,256 120 *
Time Delay Relay 451,019 86
Time Delay Relay II jawaharlal@excite.com 178,237 39 *
Touch Switch 227,760 51 *
Video Activated Relay 73,865 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 122,410 9 *
Water Detector With Sump/Bilge Pump Controller 100,777 18 *
Wire Loop Alarm Alex Meaden 153,681 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 211,703 24 *
12VDC To 120VAC Inverter 1,260,125 684
6V to 12V Converter 384,334 121
Automatic 12V Lead Acid Battery Charger 744,543 239
Automatic Load Sensing Power Switch 109,349 14 *
Car Battery Charger 748,947 158 *
Dual Polarity Power Supply 262,768 84 *
Fixed Voltage Power Supply 244,637 52 *
High Current Power Supply 253,779 64 *
High Voltage High Current Power Supply 193,598 34 *
LASER Power Supply 216,344 28
Portable CD Player Adapter For Car 151,695 12 *
Power Supply 619,023 258 *
Solid State Tesla Coil NEW! 89,611 3
Solid State Tesla Coil/High Voltage Generator 330,794 49
Transformerless Power Supply 373,579 116 *
Voltage Inverter 266,975 51 *
Voltage Inverter II 151,635 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 491,846 182
3 Watt FM Transmitter Rae XL Tkacik 256,002 80 *
50 Watt Amplifier 404,951 73
8 Note Tune Player 95,012 12 *
8 Watt Audio Amp 282,422 66 *
Aircraft Radio Communications Receiver 191,735 49 *
Crystal Radio 113,716 53 *
Digital Volume Control 263,256 46 *
Electronic Stethoscope 220,620 139 *
FET Audio Mixer 263,289 40
FM Transmitter 847,157 418
Guitar Fuzz Effect 172,491 51 *
Microphone Mixer Anatoly I. Shikhatov 181,811 25 *
Mono To Stereo Synthesizer oRbEq 75,559 17 *
One Tube Regenerative Radio NEW! 74,769 4 *
Op Amp Radio 292,474 80 *
Single Chip AM Radio NEW! 50,887 2 *
Single Chip FM Radio NEW! 92,523 0 *
Sound Level Meter 267,947 51 *
Stereo Tube Amplifier Weslee Kinsler 204,451 15 *
Tone Control 231,249 30
Transistor Organ 135,500 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 120,192 27 *
FM Telephone Bug 179,129 57
Phone Busy Indicator 140,107 24 *
Remote Telephone Ringer 77,530 3 *
Ringing Phone Light Flasher 153,010 32 *
Simple Phone Tap Derek Tombrello 302,758 98 *
Telephone Hold Button 76,412 9
Telephone Recorder 160,631 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.