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, January 18, 2018
Dual Polarity Power Supply69
12VDC To 120VAC Inverter51
Yesterday
Wednesday, January 17, 2018
12VDC To 120VAC Inverter83
Tone Control54
Of All Time 12VDC To 120VAC Inverter1,400,834
FM Transmitter928,090

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 187,398 61 *
Car Alarm Arming Horn Beep Canceller bob 99,339 6 *
Wireless Auto Tachometer 294,834 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 130,992 29 *
Parallel (Printer) Port Interface 233,590 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 389,528 62 *
3 Channel Spectrum Analyzer 182,203 20
40W Fluorescent Lamp Inverter Bart Milnes 287,547 60 *
Adjustable Strobe Light 260,156 36
Black Light 222,013 29
Colour (Sound) Organ 244,394 36
Electronic Dice NEW! 148,536 9 *
Fantastic Atom Expander 158,643 25
Flash Slave Trigger 179,445 17 *
Infa-Red Remote Control 577,008 216 *
IR Remote Extender NEW! 88,888 2 *
IR Remote Jammer Carl 221,946 110 *
IR Remote Switch NEW! 118,966 9 *
LASER Transmitter/Receiver 359,809 92
LED Chaser 403,233 83 *
LED Metronome NEW! 78,662 3 *
LED Thermometer 173,366 22 *
Light/Dark Detector 272,405 89 *
Simple Colour Organ 108,923 10 *
Strobe Light 240,721 27 *
TRIAC Light Dimmer 452,064 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 309,136 122 *
Electromagnetic Levitator NEW! 109,809 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 852,086 214 *
AC Motor Speed Controller 334,261 29 *
Air Flow Detector 216,900 54 *
Digital Keypad Combination Lock 160,767 20
Low Voltage Alarm 190,001 58 *
Pine Racecar Victory Judge 73,498 1 *
Pulse Width Modulation DC Motor Control 606,179 93
Rain Detector 269,328 112 *
Simple Lie Detector 512,946 323
Simple Polarity Tester Dudley LeRoux 125,543 13 *
Simple Servo Controller 181,907 22 *
Simple Touch Switch NEW! 136,388 5 *
Simple Two Speed Contactor DC Motor Controller 173,394 21 *
Stepper Motor Controller 671,733 120 *
Time Delay Relay 507,284 88
Time Delay Relay II jawaharlal@excite.com 201,813 39 *
Touch Switch 253,556 51 *
Video Activated Relay 91,578 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 142,993 10 *
Water Detector With Sump/Bilge Pump Controller 117,106 18 *
Wire Loop Alarm Alex Meaden 175,083 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 263,594 25 *
12VDC To 120VAC Inverter 1,400,834 687
6V to 12V Converter 443,834 121
Automatic 12V Lead Acid Battery Charger 864,066 246
Automatic Load Sensing Power Switch 130,486 15 *
Car Battery Charger 816,237 159 *
Dual Polarity Power Supply 309,097 84 *
Fixed Voltage Power Supply 274,523 52 *
High Current Power Supply 291,819 64 *
High Voltage High Current Power Supply 218,448 35 *
LASER Power Supply 248,981 28
Portable CD Player Adapter For Car 176,272 12 *
Power Supply 680,954 259 *
Solid State Tesla Coil NEW! 114,141 3
Solid State Tesla Coil/High Voltage Generator 381,971 50
Transformerless Power Supply 414,838 117 *
Voltage Inverter 300,555 51 *
Voltage Inverter II 170,448 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 540,510 182
3 Watt FM Transmitter Rae XL Tkacik 292,007 81 *
50 Watt Amplifier 456,498 74
8 Note Tune Player 112,824 12 *
8 Watt Audio Amp 324,310 67 *
Aircraft Radio Communications Receiver 228,452 49 *
Crystal Radio 133,684 53 *
Digital Volume Control 292,805 47 *
Electronic Stethoscope 268,655 141 *
FET Audio Mixer 299,301 40
FM Transmitter 928,090 418
Guitar Fuzz Effect 201,750 52 *
Microphone Mixer Anatoly I. Shikhatov 210,802 26 *
Mono To Stereo Synthesizer oRbEq 95,655 18 *
One Tube Regenerative Radio NEW! 100,949 4 *
Op Amp Radio 338,561 80 *
Single Chip AM Radio NEW! 77,513 2 *
Single Chip FM Radio NEW! 129,411 1 *
Sound Level Meter 300,495 51 *
Stereo Tube Amplifier Weslee Kinsler 229,229 15 *
Tone Control 264,529 31
Transistor Organ 159,570 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 134,794 27 *
FM Telephone Bug 199,165 57
Phone Busy Indicator 179,489 24 *
Remote Telephone Ringer 90,950 3 *
Ringing Phone Light Flasher 178,100 33 *
Simple Phone Tap Derek Tombrello 327,038 98 *
Telephone Hold Button 95,136 9
Telephone Recorder 179,807 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.