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
Sunday, September 22, 2019
12VDC To 120VAC Inverter50
Automatic 12V Lead Acid Battery Charger36
Yesterday
Saturday, September 21, 2019
Car Battery Charger43
Solid State Tesla Coil/High Voltage Generator40
Of All Time 12VDC To 120VAC Inverter1,448,107
FM Transmitter956,786

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 200,712 61 *
Car Alarm Arming Horn Beep Canceller bob 111,871 6 *
Wireless Auto Tachometer 311,684 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 140,070 29 *
Parallel (Printer) Port Interface 251,821 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 407,913 63 *
3 Channel Spectrum Analyzer 195,927 20
40W Fluorescent Lamp Inverter Bart Milnes 301,347 60 *
Adjustable Strobe Light 276,796 36
Black Light 239,730 29
Colour (Sound) Organ 259,385 36
Electronic Dice NEW! 161,748 10 *
Fantastic Atom Expander 173,869 25
Flash Slave Trigger 192,481 18 *
Infa-Red Remote Control 598,486 216 *
IR Remote Extender NEW! 102,646 2 *
IR Remote Jammer Carl 235,483 110 *
IR Remote Switch NEW! 132,269 9 *
LASER Transmitter/Receiver 377,352 92
LED Chaser 418,436 83 *
LED Metronome NEW! 85,946 3 *
LED Thermometer 185,161 22 *
Light/Dark Detector 283,151 90 *
Simple Colour Organ 118,673 10 *
Strobe Light 251,953 27 *
TRIAC Light Dimmer 468,905 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 325,618 122 *
Electromagnetic Levitator NEW! 122,399 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 880,654 214 *
AC Motor Speed Controller 355,861 29 *
Air Flow Detector 229,431 54 *
Digital Keypad Combination Lock 174,610 20
Low Voltage Alarm 203,566 58 *
Pine Racecar Victory Judge 84,294 1 *
Pulse Width Modulation DC Motor Control 621,173 93
Rain Detector 282,822 112 *
Simple Lie Detector 533,052 323
Simple Polarity Tester Dudley LeRoux 138,901 13 *
Simple Servo Controller 197,495 22 *
Simple Touch Switch NEW! 148,235 5 *
Simple Two Speed Contactor DC Motor Controller 182,894 21 *
Stepper Motor Controller 707,573 120 *
Time Delay Relay 526,824 88
Time Delay Relay II jawaharlal@excite.com 217,000 39 *
Touch Switch 265,899 51 *
Video Activated Relay 102,336 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 156,648 10 *
Water Detector With Sump/Bilge Pump Controller 128,030 18 *
Wire Loop Alarm Alex Meaden 185,059 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 284,518 25 *
12VDC To 120VAC Inverter 1,448,107 688
6V to 12V Converter 471,146 121
Automatic 12V Lead Acid Battery Charger 893,450 246
Automatic Load Sensing Power Switch 142,238 16 *
Car Battery Charger 845,674 159 *
Dual Polarity Power Supply 348,857 84 *
Fixed Voltage Power Supply 286,219 52 *
High Current Power Supply 307,460 65 *
High Voltage High Current Power Supply 229,574 35 *
LASER Power Supply 267,732 28
Portable CD Player Adapter For Car 187,916 12 *
Power Supply 704,512 259 *
Solid State Tesla Coil NEW! 125,812 4
Solid State Tesla Coil/High Voltage Generator 405,983 50
Transformerless Power Supply 434,884 117 *
Voltage Inverter 311,636 51 *
Voltage Inverter II 179,590 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 557,013 182
3 Watt FM Transmitter Rae XL Tkacik 305,821 82 *
50 Watt Amplifier 477,655 74
8 Note Tune Player 121,459 12 *
8 Watt Audio Amp 342,173 67 *
Aircraft Radio Communications Receiver 245,753 49 *
Crystal Radio 143,758 53 *
Digital Volume Control 306,808 47 *
Electronic Stethoscope 284,371 141 *
FET Audio Mixer 315,400 41
FM Transmitter 956,786 419
Guitar Fuzz Effect 218,864 52 *
Microphone Mixer Anatoly I. Shikhatov 225,468 26 *
Mono To Stereo Synthesizer oRbEq 108,744 18 *
One Tube Regenerative Radio NEW! 114,238 4 *
Op Amp Radio 355,573 80 *
Single Chip AM Radio NEW! 85,129 2 *
Single Chip FM Radio NEW! 145,593 1 *
Sound Level Meter 316,249 51 *
Stereo Tube Amplifier Weslee Kinsler 243,466 15 *
Tone Control 280,578 31
Transistor Organ 173,066 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 143,636 27 *
FM Telephone Bug 214,948 57
Phone Busy Indicator 193,757 24 *
Remote Telephone Ringer 99,057 3 *
Ringing Phone Light Flasher 190,336 34 *
Simple Phone Tap Derek Tombrello 342,243 98 *
Telephone Hold Button 108,086 10
Telephone Recorder 191,499 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.