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, May 24, 2024
12VDC To 120VAC Inverter37
FM Transmitter25
Yesterday
Thursday, May 23, 2024
12VDC To 120VAC Inverter35
FM Transmitter28
Of All Time 12VDC To 120VAC Inverter1,532,739
FM Transmitter1,010,402

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 227,860 61 *
Car Alarm Arming Horn Beep Canceller bob 137,395 6 *
Wireless Auto Tachometer 344,013 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 160,705 29 *
Parallel (Printer) Port Interface 287,410 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 448,701 63 *
3 Channel Spectrum Analyzer 222,786 20
40W Fluorescent Lamp Inverter Bart Milnes 331,116 60 *
Adjustable Strobe Light 310,026 36
Black Light 281,913 29
Colour (Sound) Organ 291,722 36
Electronic Dice NEW! 190,200 10 *
Fantastic Atom Expander 203,892 25
Flash Slave Trigger 222,181 18 *
Infa-Red Remote Control 638,298 216 *
IR Remote Extender NEW! 133,683 3 *
IR Remote Jammer Carl 267,302 110 *
IR Remote Switch NEW! 158,614 9 *
LASER Transmitter/Receiver 417,768 92
LED Chaser 447,141 83 *
LED Metronome NEW! 100,443 3 *
LED Thermometer 207,714 22 *
Light/Dark Detector 307,094 90 *
Simple Colour Organ 138,363 11 *
Strobe Light 276,799 27 *
TRIAC Light Dimmer 554,049 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 360,428 122 *
Electromagnetic Levitator NEW! 145,340 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 923,600 214 *
AC Motor Speed Controller 392,719 29 *
Air Flow Detector 252,786 54 *
Digital Keypad Combination Lock 203,267 20
Low Voltage Alarm 230,269 58 *
Pine Racecar Victory Judge 103,628 1 *
Pulse Width Modulation DC Motor Control 656,142 94
Rain Detector 305,757 112 *
Simple Lie Detector 565,754 323
Simple Polarity Tester Dudley LeRoux 166,424 13 *
Simple Servo Controller 222,472 22 *
Simple Touch Switch NEW! 170,931 6 *
Simple Two Speed Contactor DC Motor Controller 206,241 21 *
Stepper Motor Controller 747,509 120 *
Time Delay Relay 556,784 88
Time Delay Relay II jawaharlal@excite.com 248,167 39 *
Touch Switch 290,815 51 *
Video Activated Relay 122,789 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 182,386 10 *
Water Detector With Sump/Bilge Pump Controller 153,833 18 *
Wire Loop Alarm Alex Meaden 206,678 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 317,398 25 *
12VDC To 120VAC Inverter 1,532,739 691
6V to 12V Converter 528,860 121
Automatic 12V Lead Acid Battery Charger 938,524 248
Automatic Load Sensing Power Switch 168,497 16 *
Car Battery Charger 884,461 159 *
Dual Polarity Power Supply 372,395 84 *
Fixed Voltage Power Supply 312,360 52 *
High Current Power Supply 340,363 66 *
High Voltage High Current Power Supply 265,157 35 *
LASER Power Supply 297,386 28
Portable CD Player Adapter For Car 213,444 12 *
Power Supply 740,286 259 *
Solid State Tesla Coil NEW! 147,570 4
Solid State Tesla Coil/High Voltage Generator 445,770 51
Transformerless Power Supply 464,343 117 *
Voltage Inverter 340,501 51 *
Voltage Inverter II 204,335 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 586,647 182
3 Watt FM Transmitter Rae XL Tkacik 336,717 83 *
50 Watt Amplifier 509,136 74
8 Note Tune Player 141,702 12 *
8 Watt Audio Amp 374,462 67 *
Aircraft Radio Communications Receiver 279,842 49 *
Crystal Radio 160,068 53 *
Digital Volume Control 339,681 47 *
Electronic Stethoscope 322,471 142 *
FET Audio Mixer 344,787 41
FM Transmitter 1,010,402 420
Guitar Fuzz Effect 248,863 54 *
Microphone Mixer Anatoly I. Shikhatov 251,758 26 *
Mono To Stereo Synthesizer oRbEq 134,973 18 *
One Tube Regenerative Radio NEW! 143,882 4 *
Op Amp Radio 390,403 80 *
Single Chip AM Radio NEW! 100,895 3 *
Single Chip FM Radio NEW! 173,852 1 *
Sound Level Meter 343,204 51 *
Stereo Tube Amplifier Weslee Kinsler 269,525 15 *
Tone Control 310,967 31
Transistor Organ 200,897 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 164,607 27 *
FM Telephone Bug 236,411 57
Phone Busy Indicator 215,020 24 *
Remote Telephone Ringer 119,296 3 *
Ringing Phone Light Flasher 219,632 35 *
Simple Phone Tap Derek Tombrello 384,702 98 *
Telephone Hold Button 130,153 10
Telephone Recorder 217,675 55 *


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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.