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
Monday, February 27, 2017
12VDC To 120VAC Inverter81
Automatic 12V Lead Acid Battery Charger71
Yesterday
Sunday, February 26, 2017
12VDC To 120VAC Inverter78
Automatic 12V Lead Acid Battery Charger54
Of All Time 12VDC To 120VAC Inverter1,370,028
FM Transmitter913,450

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 182,035 61 *
Car Alarm Arming Horn Beep Canceller bob 95,095 6 *
Wireless Auto Tachometer 288,707 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 125,941 29 *
Parallel (Printer) Port Interface 228,137 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 381,431 62 *
3 Channel Spectrum Analyzer 174,980 20
40W Fluorescent Lamp Inverter Bart Milnes 280,976 60 *
Adjustable Strobe Light 252,621 36
Black Light 214,994 29
Colour (Sound) Organ 237,624 36
Electronic Dice NEW! 143,321 9 *
Fantastic Atom Expander 152,380 25
Flash Slave Trigger 173,883 17 *
Infa-Red Remote Control 568,961 216 *
IR Remote Extender NEW! 82,950 2 *
IR Remote Jammer Carl 215,457 110 *
IR Remote Switch NEW! 113,644 9 *
LASER Transmitter/Receiver 352,605 92
LED Chaser 395,350 83 *
LED Metronome NEW! 74,303 3 *
LED Thermometer 167,469 22 *
Light/Dark Detector 265,036 89 *
Simple Colour Organ 104,349 10 *
Strobe Light 234,958 27 *
TRIAC Light Dimmer 442,621 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 303,578 122 *
Electromagnetic Levitator NEW! 103,785 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 839,628 214 *
AC Motor Speed Controller 323,783 29 *
Air Flow Detector 210,649 54 *
Digital Keypad Combination Lock 155,399 20
Low Voltage Alarm 182,736 58 *
Pine Racecar Victory Judge 69,132 1 *
Pulse Width Modulation DC Motor Control 596,446 93
Rain Detector 263,271 112 *
Simple Lie Detector 504,690 323
Simple Polarity Tester Dudley LeRoux 119,742 13 *
Simple Servo Controller 175,642 22 *
Simple Touch Switch NEW! 130,907 5 *
Simple Two Speed Contactor DC Motor Controller 167,822 21 *
Stepper Motor Controller 657,441 120 *
Time Delay Relay 496,918 88
Time Delay Relay II jawaharlal@excite.com 195,673 39 *
Touch Switch 246,992 51 *
Video Activated Relay 86,601 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 138,037 10 *
Water Detector With Sump/Bilge Pump Controller 112,383 18 *
Wire Loop Alarm Alex Meaden 169,404 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 253,756 25 *
12VDC To 120VAC Inverter 1,370,028 687
6V to 12V Converter 430,832 121
Automatic 12V Lead Acid Battery Charger 845,504 246
Automatic Load Sensing Power Switch 124,629 15 *
Car Battery Charger 801,801 159 *
Dual Polarity Power Supply 289,660 84 *
Fixed Voltage Power Supply 268,422 52 *
High Current Power Supply 284,477 64 *
High Voltage High Current Power Supply 212,903 35 *
LASER Power Supply 241,581 28
Portable CD Player Adapter For Car 169,308 12 *
Power Supply 668,366 259 *
Solid State Tesla Coil NEW! 108,015 3
Solid State Tesla Coil/High Voltage Generator 370,336 50
Transformerless Power Supply 407,121 117 *
Voltage Inverter 292,865 51 *
Voltage Inverter II 166,563 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 530,238 182
3 Watt FM Transmitter Rae XL Tkacik 284,424 81 *
50 Watt Amplifier 446,056 74
8 Note Tune Player 108,176 12 *
8 Watt Audio Amp 315,443 67 *
Aircraft Radio Communications Receiver 220,086 49 *
Crystal Radio 128,852 53 *
Digital Volume Control 285,340 47 *
Electronic Stethoscope 259,731 141 *
FET Audio Mixer 289,886 40
FM Transmitter 913,450 418
Guitar Fuzz Effect 194,860 52 *
Microphone Mixer Anatoly I. Shikhatov 203,215 26 *
Mono To Stereo Synthesizer oRbEq 90,701 18 *
One Tube Regenerative Radio NEW! 94,453 4 *
Op Amp Radio 328,770 80 *
Single Chip AM Radio NEW! 72,910 2 *
Single Chip FM Radio NEW! 122,055 1 *
Sound Level Meter 293,905 51 *
Stereo Tube Amplifier Weslee Kinsler 223,137 15 *
Tone Control 255,819 31
Transistor Organ 153,850 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 130,687 27 *
FM Telephone Bug 194,177 57
Phone Busy Indicator 170,757 24 *
Remote Telephone Ringer 87,124 3 *
Ringing Phone Light Flasher 171,341 33 *
Simple Phone Tap Derek Tombrello 321,830 98 *
Telephone Hold Button 90,414 9
Telephone Recorder 174,525 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.