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, September 04, 2015
12VDC To 120VAC Inverter54
6V to 12V Converter47
Yesterday
Thursday, September 03, 2015
12VDC To 120VAC Inverter146
Automatic 12V Lead Acid Battery Charger114
Of All Time 12VDC To 120VAC Inverter1,305,680
FM Transmitter876,539

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 173,885 61 *
Car Alarm Arming Horn Beep Canceller bob 88,787 6 *
Wireless Auto Tachometer 277,161 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 117,236 29 *
Parallel (Printer) Port Interface 218,494 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 363,724 62 *
3 Channel Spectrum Analyzer 159,722 20
40W Fluorescent Lamp Inverter Bart Milnes 267,271 60 *
Adjustable Strobe Light 237,822 36
Black Light 202,338 29
Colour (Sound) Organ 224,787 35
Electronic Dice NEW! 130,792 8 *
Fantastic Atom Expander 140,986 25
Flash Slave Trigger 164,112 17 *
Infa-Red Remote Control 548,273 216 *
IR Remote Extender NEW! 73,394 2 *
IR Remote Jammer Carl 203,847 110 *
IR Remote Switch NEW! 103,533 9 *
LASER Transmitter/Receiver 333,543 91
LED Chaser 379,439 83 *
LED Metronome NEW! 66,626 3 *
LED Thermometer 158,255 22 *
Light/Dark Detector 243,298 89 *
Simple Colour Organ 97,041 10 *
Strobe Light 223,177 27 *
TRIAC Light Dimmer 416,783 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 290,780 122 *
Electromagnetic Levitator NEW! 92,792 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 802,626 214 *
AC Motor Speed Controller 301,105 29 *
Air Flow Detector 196,215 54 *
Digital Keypad Combination Lock 145,911 20
Low Voltage Alarm 169,533 58 *
Pine Racecar Victory Judge 63,260 1 *
Pulse Width Modulation DC Motor Control 573,229 93
Rain Detector 249,964 112 *
Simple Lie Detector 481,317 322
Simple Polarity Tester Dudley LeRoux 108,627 13 *
Simple Servo Controller 163,962 22 *
Simple Touch Switch NEW! 118,849 5 *
Simple Two Speed Contactor DC Motor Controller 157,389 21 *
Stepper Motor Controller 628,271 120 *
Time Delay Relay 469,304 86
Time Delay Relay II jawaharlal@excite.com 184,227 39 *
Touch Switch 234,207 51 *
Video Activated Relay 78,340 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 127,741 10 *
Water Detector With Sump/Bilge Pump Controller 104,812 18 *
Wire Loop Alarm Alex Meaden 159,330 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 229,226 25 *
12VDC To 120VAC Inverter 1,305,680 686
6V to 12V Converter 401,977 121
Automatic 12V Lead Acid Battery Charger 791,926 243
Automatic Load Sensing Power Switch 114,527 14 *
Car Battery Charger 768,574 159 *
Dual Polarity Power Supply 272,828 84 *
Fixed Voltage Power Supply 253,753 52 *
High Current Power Supply 267,435 64 *
High Voltage High Current Power Supply 199,866 35 *
LASER Power Supply 224,837 28
Portable CD Player Adapter For Car 157,467 12 *
Power Supply 639,115 259 *
Solid State Tesla Coil NEW! 96,817 3
Solid State Tesla Coil/High Voltage Generator 344,902 49
Transformerless Power Supply 387,109 116 *
Voltage Inverter 275,790 51 *
Voltage Inverter II 157,872 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 507,870 182
3 Watt FM Transmitter Rae XL Tkacik 266,269 81 *
50 Watt Amplifier 420,872 74
8 Note Tune Player 99,817 12 *
8 Watt Audio Amp 295,399 66 *
Aircraft Radio Communications Receiver 203,158 49 *
Crystal Radio 119,708 53 *
Digital Volume Control 271,302 46 *
Electronic Stethoscope 239,446 141 *
FET Audio Mixer 273,654 40
FM Transmitter 876,539 418
Guitar Fuzz Effect 180,888 52 *
Microphone Mixer Anatoly I. Shikhatov 189,415 25 *
Mono To Stereo Synthesizer oRbEq 81,051 17 *
One Tube Regenerative Radio NEW! 81,552 4 *
Op Amp Radio 309,022 80 *
Single Chip AM Radio NEW! 64,439 2 *
Single Chip FM Radio NEW! 108,322 0 *
Sound Level Meter 276,476 51 *
Stereo Tube Amplifier Weslee Kinsler 212,496 15 *
Tone Control 240,683 31
Transistor Organ 142,292 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 123,932 27 *
FM Telephone Bug 184,902 57
Phone Busy Indicator 149,892 24 *
Remote Telephone Ringer 80,565 3 *
Ringing Phone Light Flasher 159,062 33 *
Simple Phone Tap Derek Tombrello 310,101 98 *
Telephone Hold Button 80,560 9
Telephone Recorder 165,354 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.