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
Tuesday, June 27, 2017
12VDC To 120VAC Inverter423
Automatic 12V Lead Acid Battery Charger59
Yesterday
Monday, June 26, 2017
12VDC To 120VAC Inverter87
Time Delay Relay46
Of All Time 12VDC To 120VAC Inverter1,381,964
FM Transmitter918,690

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 183,872 61 *
Car Alarm Arming Horn Beep Canceller bob 96,421 6 *
Wireless Auto Tachometer 290,745 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 127,700 29 *
Parallel (Printer) Port Interface 230,063 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 384,427 62 *
3 Channel Spectrum Analyzer 177,431 20
40W Fluorescent Lamp Inverter Bart Milnes 283,325 60 *
Adjustable Strobe Light 255,288 36
Black Light 217,717 29
Colour (Sound) Organ 240,040 36
Electronic Dice NEW! 145,565 9 *
Fantastic Atom Expander 154,417 25
Flash Slave Trigger 176,025 17 *
Infa-Red Remote Control 572,223 216 *
IR Remote Extender NEW! 85,322 2 *
IR Remote Jammer Carl 217,938 110 *
IR Remote Switch NEW! 115,452 9 *
LASER Transmitter/Receiver 355,458 92
LED Chaser 398,061 83 *
LED Metronome NEW! 76,010 3 *
LED Thermometer 169,473 22 *
Light/Dark Detector 267,805 89 *
Simple Colour Organ 106,112 10 *
Strobe Light 237,037 27 *
TRIAC Light Dimmer 446,016 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 305,379 122 *
Electromagnetic Levitator NEW! 106,073 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 844,277 214 *
AC Motor Speed Controller 327,875 29 *
Air Flow Detector 213,074 54 *
Digital Keypad Combination Lock 157,093 20
Low Voltage Alarm 185,354 58 *
Pine Racecar Victory Judge 70,653 1 *
Pulse Width Modulation DC Motor Control 600,100 93
Rain Detector 265,620 112 *
Simple Lie Detector 507,732 323
Simple Polarity Tester Dudley LeRoux 121,869 13 *
Simple Servo Controller 177,644 22 *
Simple Touch Switch NEW! 132,999 5 *
Simple Two Speed Contactor DC Motor Controller 169,808 21 *
Stepper Motor Controller 661,711 120 *
Time Delay Relay 500,759 88
Time Delay Relay II jawaharlal@excite.com 197,826 39 *
Touch Switch 249,118 51 *
Video Activated Relay 88,501 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 139,941 10 *
Water Detector With Sump/Bilge Pump Controller 113,770 18 *
Wire Loop Alarm Alex Meaden 171,393 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 257,911 25 *
12VDC To 120VAC Inverter 1,381,964 687
6V to 12V Converter 435,332 121
Automatic 12V Lead Acid Battery Charger 852,123 246
Automatic Load Sensing Power Switch 126,917 15 *
Car Battery Charger 806,492 159 *
Dual Polarity Power Supply 294,563 84 *
Fixed Voltage Power Supply 270,654 52 *
High Current Power Supply 287,318 64 *
High Voltage High Current Power Supply 214,987 35 *
LASER Power Supply 244,291 28
Portable CD Player Adapter For Car 171,986 12 *
Power Supply 673,025 259 *
Solid State Tesla Coil NEW! 110,124 3
Solid State Tesla Coil/High Voltage Generator 374,742 50
Transformerless Power Supply 409,927 117 *
Voltage Inverter 295,873 51 *
Voltage Inverter II 167,946 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 533,836 182
3 Watt FM Transmitter Rae XL Tkacik 286,868 81 *
50 Watt Amplifier 449,629 74
8 Note Tune Player 109,804 12 *
8 Watt Audio Amp 318,469 67 *
Aircraft Radio Communications Receiver 223,160 49 *
Crystal Radio 130,575 53 *
Digital Volume Control 287,881 47 *
Electronic Stethoscope 263,337 141 *
FET Audio Mixer 293,052 40
FM Transmitter 918,690 418
Guitar Fuzz Effect 197,295 52 *
Microphone Mixer Anatoly I. Shikhatov 206,121 26 *
Mono To Stereo Synthesizer oRbEq 92,452 18 *
One Tube Regenerative Radio NEW! 96,913 4 *
Op Amp Radio 332,177 80 *
Single Chip AM Radio NEW! 74,715 2 *
Single Chip FM Radio NEW! 124,972 1 *
Sound Level Meter 296,187 51 *
Stereo Tube Amplifier Weslee Kinsler 225,214 15 *
Tone Control 258,710 31
Transistor Organ 155,919 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 132,287 27 *
FM Telephone Bug 195,917 57
Phone Busy Indicator 174,338 24 *
Remote Telephone Ringer 88,374 3 *
Ringing Phone Light Flasher 173,768 33 *
Simple Phone Tap Derek Tombrello 323,561 98 *
Telephone Hold Button 92,387 9
Telephone Recorder 176,481 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.