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
Thursday, May 23, 2019
12VDC To 120VAC Inverter33
7 Segment LED Counter32
Yesterday
Wednesday, May 22, 2019
12VDC To 120VAC Inverter87
7 Segment LED Counter78
Of All Time 12VDC To 120VAC Inverter1,439,469
FM Transmitter951,271

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 198,463 61 *
Car Alarm Arming Horn Beep Canceller bob 109,633 6 *
Wireless Auto Tachometer 307,834 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 138,150 29 *
Parallel (Printer) Port Interface 247,458 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 404,176 63 *
3 Channel Spectrum Analyzer 193,584 20
40W Fluorescent Lamp Inverter Bart Milnes 298,550 60 *
Adjustable Strobe Light 273,844 36
Black Light 235,810 29
Colour (Sound) Organ 256,520 36
Electronic Dice NEW! 159,103 10 *
Fantastic Atom Expander 170,897 25
Flash Slave Trigger 189,959 18 *
Infa-Red Remote Control 595,013 216 *
IR Remote Extender NEW! 99,853 2 *
IR Remote Jammer Carl 233,093 110 *
IR Remote Switch NEW! 129,612 9 *
LASER Transmitter/Receiver 373,909 92
LED Chaser 415,458 83 *
LED Metronome NEW! 84,474 3 *
LED Thermometer 182,896 22 *
Light/Dark Detector 280,971 90 *
Simple Colour Organ 117,081 10 *
Strobe Light 249,909 27 *
TRIAC Light Dimmer 464,738 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 321,814 122 *
Electromagnetic Levitator NEW! 120,223 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 874,872 214 *
AC Motor Speed Controller 351,964 29 *
Air Flow Detector 227,304 54 *
Digital Keypad Combination Lock 171,638 20
Low Voltage Alarm 201,224 58 *
Pine Racecar Victory Judge 81,957 1 *
Pulse Width Modulation DC Motor Control 618,365 93
Rain Detector 280,787 112 *
Simple Lie Detector 529,493 323
Simple Polarity Tester Dudley LeRoux 136,233 13 *
Simple Servo Controller 194,457 22 *
Simple Touch Switch NEW! 146,313 5 *
Simple Two Speed Contactor DC Motor Controller 180,881 21 *
Stepper Motor Controller 703,616 120 *
Time Delay Relay 523,319 88
Time Delay Relay II jawaharlal@excite.com 214,396 39 *
Touch Switch 263,720 51 *
Video Activated Relay 100,610 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 154,044 10 *
Water Detector With Sump/Bilge Pump Controller 126,114 18 *
Wire Loop Alarm Alex Meaden 183,132 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 280,669 25 *
12VDC To 120VAC Inverter 1,439,469 688
6V to 12V Converter 463,890 121
Automatic 12V Lead Acid Battery Charger 888,180 246
Automatic Load Sensing Power Switch 139,853 16 *
Car Battery Charger 840,980 159 *
Dual Polarity Power Supply 346,574 84 *
Fixed Voltage Power Supply 284,001 52 *
High Current Power Supply 303,969 65 *
High Voltage High Current Power Supply 227,470 35 *
LASER Power Supply 264,065 28
Portable CD Player Adapter For Car 185,744 12 *
Power Supply 700,093 259 *
Solid State Tesla Coil NEW! 123,687 4
Solid State Tesla Coil/High Voltage Generator 401,532 50
Transformerless Power Supply 431,563 117 *
Voltage Inverter 309,125 51 *
Voltage Inverter II 177,793 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 554,172 182
3 Watt FM Transmitter Rae XL Tkacik 303,063 82 *
50 Watt Amplifier 474,328 74
8 Note Tune Player 119,787 12 *
8 Watt Audio Amp 338,583 67 *
Aircraft Radio Communications Receiver 242,206 49 *
Crystal Radio 141,637 53 *
Digital Volume Control 303,884 47 *
Electronic Stethoscope 281,453 141 *
FET Audio Mixer 312,875 41
FM Transmitter 951,271 419
Guitar Fuzz Effect 215,654 52 *
Microphone Mixer Anatoly I. Shikhatov 222,247 26 *
Mono To Stereo Synthesizer oRbEq 106,016 18 *
One Tube Regenerative Radio NEW! 111,305 4 *
Op Amp Radio 352,415 80 *
Single Chip AM Radio NEW! 83,630 2 *
Single Chip FM Radio NEW! 142,177 1 *
Sound Level Meter 312,694 51 *
Stereo Tube Amplifier Weslee Kinsler 240,286 15 *
Tone Control 277,149 31
Transistor Organ 170,178 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 141,838 27 *
FM Telephone Bug 212,155 57
Phone Busy Indicator 191,093 24 *
Remote Telephone Ringer 97,484 3 *
Ringing Phone Light Flasher 187,750 34 *
Simple Phone Tap Derek Tombrello 337,572 98 *
Telephone Hold Button 105,362 10
Telephone Recorder 188,982 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.