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, May 26, 2019
6V to 12V Converter97
Sound Level Meter82
Yesterday
Saturday, May 25, 2019
12VDC To 120VAC Inverter66
FM Transmitter60
Of All Time 12VDC To 120VAC Inverter1,439,681
FM Transmitter951,475

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 198,558 61 *
Car Alarm Arming Horn Beep Canceller bob 109,706 6 *
Wireless Auto Tachometer 307,962 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 138,215 29 *
Parallel (Printer) Port Interface 247,588 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 404,301 63 *
3 Channel Spectrum Analyzer 193,649 20
40W Fluorescent Lamp Inverter Bart Milnes 298,646 60 *
Adjustable Strobe Light 273,934 36
Black Light 235,962 29
Colour (Sound) Organ 256,612 36
Electronic Dice NEW! 159,179 10 *
Fantastic Atom Expander 170,980 25
Flash Slave Trigger 190,059 18 *
Infa-Red Remote Control 595,102 216 *
IR Remote Extender NEW! 99,957 2 *
IR Remote Jammer Carl 233,163 110 *
IR Remote Switch NEW! 129,695 9 *
LASER Transmitter/Receiver 374,020 92
LED Chaser 415,537 83 *
LED Metronome NEW! 84,534 3 *
LED Thermometer 182,955 22 *
Light/Dark Detector 281,043 90 *
Simple Colour Organ 117,132 10 *
Strobe Light 249,973 27 *
TRIAC Light Dimmer 464,826 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 321,919 122 *
Electromagnetic Levitator NEW! 120,289 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 875,041 214 *
AC Motor Speed Controller 352,086 29 *
Air Flow Detector 227,369 54 *
Digital Keypad Combination Lock 171,721 20
Low Voltage Alarm 201,290 58 *
Pine Racecar Victory Judge 82,016 1 *
Pulse Width Modulation DC Motor Control 618,464 93
Rain Detector 280,838 112 *
Simple Lie Detector 529,597 323
Simple Polarity Tester Dudley LeRoux 136,309 13 *
Simple Servo Controller 194,605 22 *
Simple Touch Switch NEW! 146,361 5 *
Simple Two Speed Contactor DC Motor Controller 180,947 21 *
Stepper Motor Controller 703,756 120 *
Time Delay Relay 523,422 88
Time Delay Relay II jawaharlal@excite.com 214,483 39 *
Touch Switch 263,787 51 *
Video Activated Relay 100,654 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 154,147 10 *
Water Detector With Sump/Bilge Pump Controller 126,169 18 *
Wire Loop Alarm Alex Meaden 183,195 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 280,800 25 *
12VDC To 120VAC Inverter 1,439,681 688
6V to 12V Converter 464,180 121
Automatic 12V Lead Acid Battery Charger 888,372 246
Automatic Load Sensing Power Switch 139,931 16 *
Car Battery Charger 841,126 159 *
Dual Polarity Power Supply 346,659 84 *
Fixed Voltage Power Supply 284,083 52 *
High Current Power Supply 304,105 65 *
High Voltage High Current Power Supply 227,521 35 *
LASER Power Supply 264,210 28
Portable CD Player Adapter For Car 185,824 12 *
Power Supply 700,258 259 *
Solid State Tesla Coil NEW! 123,750 4
Solid State Tesla Coil/High Voltage Generator 401,718 50
Transformerless Power Supply 431,669 117 *
Voltage Inverter 309,187 51 *
Voltage Inverter II 177,846 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 554,253 182
3 Watt FM Transmitter Rae XL Tkacik 303,151 82 *
50 Watt Amplifier 474,452 74
8 Note Tune Player 119,854 12 *
8 Watt Audio Amp 338,688 67 *
Aircraft Radio Communications Receiver 242,337 49 *
Crystal Radio 141,718 53 *
Digital Volume Control 303,971 47 *
Electronic Stethoscope 281,524 141 *
FET Audio Mixer 312,952 41
FM Transmitter 951,475 419
Guitar Fuzz Effect 215,760 52 *
Microphone Mixer Anatoly I. Shikhatov 222,342 26 *
Mono To Stereo Synthesizer oRbEq 106,098 18 *
One Tube Regenerative Radio NEW! 111,403 4 *
Op Amp Radio 352,507 80 *
Single Chip AM Radio NEW! 83,669 2 *
Single Chip FM Radio NEW! 142,302 1 *
Sound Level Meter 312,886 51 *
Stereo Tube Amplifier Weslee Kinsler 240,407 15 *
Tone Control 277,253 31
Transistor Organ 170,268 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 141,889 27 *
FM Telephone Bug 212,271 57
Phone Busy Indicator 191,156 24 *
Remote Telephone Ringer 97,550 3 *
Ringing Phone Light Flasher 187,824 34 *
Simple Phone Tap Derek Tombrello 337,655 98 *
Telephone Hold Button 105,467 10
Telephone Recorder 189,065 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.