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
Sunday, February 25, 2018
Dual Polarity Power Supply89
12VDC To 120VAC Inverter85
Yesterday
Saturday, February 24, 2018
Dual Polarity Power Supply68
Stepper Motor Controller49
Of All Time 12VDC To 120VAC Inverter1,404,235
FM Transmitter929,938

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 187,962 61 *
Car Alarm Arming Horn Beep Canceller bob 99,850 6 *
Wireless Auto Tachometer 295,500 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 131,492 29 *
Parallel (Printer) Port Interface 234,187 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 390,415 62 *
3 Channel Spectrum Analyzer 182,997 20
40W Fluorescent Lamp Inverter Bart Milnes 288,296 60 *
Adjustable Strobe Light 260,937 36
Black Light 222,848 29
Colour (Sound) Organ 245,108 36
Electronic Dice NEW! 149,110 9 *
Fantastic Atom Expander 159,308 25
Flash Slave Trigger 180,011 17 *
Infa-Red Remote Control 578,005 216 *
IR Remote Extender NEW! 89,576 2 *
IR Remote Jammer Carl 222,695 110 *
IR Remote Switch NEW! 119,841 9 *
LASER Transmitter/Receiver 360,636 92
LED Chaser 404,025 83 *
LED Metronome NEW! 79,180 3 *
LED Thermometer 174,099 22 *
Light/Dark Detector 273,108 89 *
Simple Colour Organ 109,411 10 *
Strobe Light 241,274 27 *
TRIAC Light Dimmer 453,055 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 309,856 122 *
Electromagnetic Levitator NEW! 110,484 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 853,383 214 *
AC Motor Speed Controller 335,263 29 *
Air Flow Detector 217,516 54 *
Digital Keypad Combination Lock 161,377 20
Low Voltage Alarm 190,658 58 *
Pine Racecar Victory Judge 73,968 1 *
Pulse Width Modulation DC Motor Control 607,244 93
Rain Detector 269,904 112 *
Simple Lie Detector 514,095 323
Simple Polarity Tester Dudley LeRoux 126,199 13 *
Simple Servo Controller 182,543 22 *
Simple Touch Switch NEW! 136,997 5 *
Simple Two Speed Contactor DC Motor Controller 173,985 21 *
Stepper Motor Controller 674,044 120 *
Time Delay Relay 508,510 88
Time Delay Relay II jawaharlal@excite.com 202,423 39 *
Touch Switch 254,134 51 *
Video Activated Relay 92,140 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 143,722 10 *
Water Detector With Sump/Bilge Pump Controller 117,728 18 *
Wire Loop Alarm Alex Meaden 175,676 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 264,684 25 *
12VDC To 120VAC Inverter 1,404,235 687
6V to 12V Converter 445,139 121
Automatic 12V Lead Acid Battery Charger 866,976 246
Automatic Load Sensing Power Switch 131,203 15 *
Car Battery Charger 818,448 159 *
Dual Polarity Power Supply 311,836 84 *
Fixed Voltage Power Supply 275,222 52 *
High Current Power Supply 292,592 64 *
High Voltage High Current Power Supply 219,078 35 *
LASER Power Supply 249,761 28
Portable CD Player Adapter For Car 177,051 12 *
Power Supply 682,448 259 *
Solid State Tesla Coil NEW! 115,049 3
Solid State Tesla Coil/High Voltage Generator 383,299 50
Transformerless Power Supply 415,765 117 *
Voltage Inverter 301,260 51 *
Voltage Inverter II 170,975 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 541,600 182
3 Watt FM Transmitter Rae XL Tkacik 292,854 81 *
50 Watt Amplifier 457,740 74
8 Note Tune Player 113,356 12 *
8 Watt Audio Amp 325,185 67 *
Aircraft Radio Communications Receiver 229,256 49 *
Crystal Radio 134,198 53 *
Digital Volume Control 293,620 47 *
Electronic Stethoscope 269,767 141 *
FET Audio Mixer 300,417 40
FM Transmitter 929,938 418
Guitar Fuzz Effect 202,522 52 *
Microphone Mixer Anatoly I. Shikhatov 211,746 26 *
Mono To Stereo Synthesizer oRbEq 96,210 18 *
One Tube Regenerative Radio NEW! 101,744 4 *
Op Amp Radio 339,562 80 *
Single Chip AM Radio NEW! 78,101 2 *
Single Chip FM Radio NEW! 130,219 1 *
Sound Level Meter 301,329 51 *
Stereo Tube Amplifier Weslee Kinsler 229,904 15 *
Tone Control 265,411 31
Transistor Organ 160,201 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 135,270 27 *
FM Telephone Bug 199,699 57
Phone Busy Indicator 180,458 24 *
Remote Telephone Ringer 91,374 3 *
Ringing Phone Light Flasher 178,932 33 *
Simple Phone Tap Derek Tombrello 327,543 98 *
Telephone Hold Button 95,604 9
Telephone Recorder 180,386 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.