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, June 17, 2019
Wireless Auto Tachometer66
12VDC To 120VAC Inverter49
Yesterday
Sunday, June 16, 2019
12VDC To 120VAC Inverter73
6V to 12V Converter54
Of All Time 12VDC To 120VAC Inverter1,442,002
FM Transmitter952,918

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 199,184 61 *
Car Alarm Arming Horn Beep Canceller bob 110,372 6 *
Wireless Auto Tachometer 308,835 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 138,706 29 *
Parallel (Printer) Port Interface 248,485 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 405,315 63 *
3 Channel Spectrum Analyzer 194,191 20
40W Fluorescent Lamp Inverter Bart Milnes 299,349 60 *
Adjustable Strobe Light 274,688 36
Black Light 236,914 29
Colour (Sound) Organ 257,349 36
Electronic Dice NEW! 159,876 10 *
Fantastic Atom Expander 171,733 25
Flash Slave Trigger 190,748 18 *
Infa-Red Remote Control 595,923 216 *
IR Remote Extender NEW! 100,694 2 *
IR Remote Jammer Carl 233,678 110 *
IR Remote Switch NEW! 130,373 9 *
LASER Transmitter/Receiver 374,841 92
LED Chaser 416,118 83 *
LED Metronome NEW! 84,809 3 *
LED Thermometer 183,398 22 *
Light/Dark Detector 281,486 90 *
Simple Colour Organ 117,516 10 *
Strobe Light 250,392 27 *
TRIAC Light Dimmer 465,493 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 322,754 122 *
Electromagnetic Levitator NEW! 120,853 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 876,284 214 *
AC Motor Speed Controller 352,781 29 *
Air Flow Detector 227,847 54 *
Digital Keypad Combination Lock 172,254 20
Low Voltage Alarm 201,756 58 *
Pine Racecar Victory Judge 82,448 1 *
Pulse Width Modulation DC Motor Control 619,053 93
Rain Detector 281,286 112 *
Simple Lie Detector 530,287 323
Simple Polarity Tester Dudley LeRoux 136,981 13 *
Simple Servo Controller 195,252 22 *
Simple Touch Switch NEW! 146,833 5 *
Simple Two Speed Contactor DC Motor Controller 181,446 21 *
Stepper Motor Controller 704,703 120 *
Time Delay Relay 524,046 88
Time Delay Relay II jawaharlal@excite.com 215,156 39 *
Touch Switch 264,253 51 *
Video Activated Relay 101,052 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 154,704 10 *
Water Detector With Sump/Bilge Pump Controller 126,592 18 *
Wire Loop Alarm Alex Meaden 183,610 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 281,535 25 *
12VDC To 120VAC Inverter 1,442,002 688
6V to 12V Converter 465,718 121
Automatic 12V Lead Acid Battery Charger 889,425 246
Automatic Load Sensing Power Switch 140,448 16 *
Car Battery Charger 841,951 159 *
Dual Polarity Power Supply 347,182 84 *
Fixed Voltage Power Supply 284,563 52 *
High Current Power Supply 304,783 65 *
High Voltage High Current Power Supply 228,030 35 *
LASER Power Supply 265,009 28
Portable CD Player Adapter For Car 186,342 12 *
Power Supply 701,068 259 *
Solid State Tesla Coil NEW! 124,146 4
Solid State Tesla Coil/High Voltage Generator 402,621 50
Transformerless Power Supply 432,284 117 *
Voltage Inverter 309,522 51 *
Voltage Inverter II 178,289 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 554,894 182
3 Watt FM Transmitter Rae XL Tkacik 303,786 82 *
50 Watt Amplifier 475,274 74
8 Note Tune Player 120,239 12 *
8 Watt Audio Amp 339,419 67 *
Aircraft Radio Communications Receiver 243,087 49 *
Crystal Radio 142,026 53 *
Digital Volume Control 304,541 47 *
Electronic Stethoscope 282,156 141 *
FET Audio Mixer 313,557 41
FM Transmitter 952,918 419
Guitar Fuzz Effect 216,436 52 *
Microphone Mixer Anatoly I. Shikhatov 222,943 26 *
Mono To Stereo Synthesizer oRbEq 106,648 18 *
One Tube Regenerative Radio NEW! 111,820 4 *
Op Amp Radio 353,236 80 *
Single Chip AM Radio NEW! 83,961 2 *
Single Chip FM Radio NEW! 142,953 1 *
Sound Level Meter 313,638 51 *
Stereo Tube Amplifier Weslee Kinsler 241,071 15 *
Tone Control 277,939 31
Transistor Organ 170,841 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 142,319 27 *
FM Telephone Bug 212,828 57
Phone Busy Indicator 191,664 24 *
Remote Telephone Ringer 97,940 3 *
Ringing Phone Light Flasher 188,494 34 *
Simple Phone Tap Derek Tombrello 338,200 98 *
Telephone Hold Button 106,038 10
Telephone Recorder 189,655 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.