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
Friday, April 28, 2017
Electromagnetic Levitator4
LASER Transmitter/Receiver3
Yesterday
Thursday, April 27, 2017
12VDC To 120VAC Inverter114
Automatic 12V Lead Acid Battery Charger53
Of All Time 12VDC To 120VAC Inverter1,375,767
FM Transmitter915,967

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 182,815 61 *
Car Alarm Arming Horn Beep Canceller bob 95,644 6 *
Wireless Auto Tachometer 289,626 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 126,765 29 *
Parallel (Printer) Port Interface 229,001 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 382,869 62 *
3 Channel Spectrum Analyzer 176,130 20
40W Fluorescent Lamp Inverter Bart Milnes 282,093 60 *
Adjustable Strobe Light 253,863 36
Black Light 216,259 29
Colour (Sound) Organ 238,799 36
Electronic Dice NEW! 144,475 9 *
Fantastic Atom Expander 153,295 25
Flash Slave Trigger 174,817 17 *
Infa-Red Remote Control 570,611 216 *
IR Remote Extender NEW! 84,085 2 *
IR Remote Jammer Carl 216,692 110 *
IR Remote Switch NEW! 114,532 9 *
LASER Transmitter/Receiver 353,995 92
LED Chaser 396,692 83 *
LED Metronome NEW! 75,026 3 *
LED Thermometer 168,340 22 *
Light/Dark Detector 266,413 89 *
Simple Colour Organ 105,125 10 *
Strobe Light 235,860 27 *
TRIAC Light Dimmer 444,264 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 304,385 122 *
Electromagnetic Levitator NEW! 104,885 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 841,906 214 *
AC Motor Speed Controller 325,843 29 *
Air Flow Detector 211,837 54 *
Digital Keypad Combination Lock 156,220 20
Low Voltage Alarm 183,900 58 *
Pine Racecar Victory Judge 69,738 1 *
Pulse Width Modulation DC Motor Control 598,212 93
Rain Detector 264,366 112 *
Simple Lie Detector 506,172 323
Simple Polarity Tester Dudley LeRoux 120,807 13 *
Simple Servo Controller 176,598 22 *
Simple Touch Switch NEW! 131,941 5 *
Simple Two Speed Contactor DC Motor Controller 168,739 21 *
Stepper Motor Controller 659,536 120 *
Time Delay Relay 498,730 88
Time Delay Relay II jawaharlal@excite.com 196,659 39 *
Touch Switch 247,947 51 *
Video Activated Relay 87,452 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 138,936 10 *
Water Detector With Sump/Bilge Pump Controller 113,042 18 *
Wire Loop Alarm Alex Meaden 170,281 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 255,859 25 *
12VDC To 120VAC Inverter 1,375,767 687
6V to 12V Converter 433,056 121
Automatic 12V Lead Acid Battery Charger 848,864 246
Automatic Load Sensing Power Switch 125,630 15 *
Car Battery Charger 804,089 159 *
Dual Polarity Power Supply 291,006 84 *
Fixed Voltage Power Supply 269,562 52 *
High Current Power Supply 285,773 64 *
High Voltage High Current Power Supply 213,861 35 *
LASER Power Supply 242,906 28
Portable CD Player Adapter For Car 170,607 12 *
Power Supply 670,835 259 *
Solid State Tesla Coil NEW! 108,971 3
Solid State Tesla Coil/High Voltage Generator 372,423 50
Transformerless Power Supply 408,403 117 *
Voltage Inverter 294,352 51 *
Voltage Inverter II 167,265 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 531,938 182
3 Watt FM Transmitter Rae XL Tkacik 285,653 81 *
50 Watt Amplifier 447,788 74
8 Note Tune Player 108,943 12 *
8 Watt Audio Amp 316,924 67 *
Aircraft Radio Communications Receiver 221,518 49 *
Crystal Radio 129,671 53 *
Digital Volume Control 286,507 47 *
Electronic Stethoscope 261,518 141 *
FET Audio Mixer 291,331 40
FM Transmitter 915,967 418
Guitar Fuzz Effect 195,982 52 *
Microphone Mixer Anatoly I. Shikhatov 204,519 26 *
Mono To Stereo Synthesizer oRbEq 91,549 18 *
One Tube Regenerative Radio NEW! 95,669 4 *
Op Amp Radio 330,484 80 *
Single Chip AM Radio NEW! 73,740 2 *
Single Chip FM Radio NEW! 123,550 1 *
Sound Level Meter 295,051 51 *
Stereo Tube Amplifier Weslee Kinsler 224,126 15 *
Tone Control 257,226 31
Transistor Organ 154,790 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 131,401 27 *
FM Telephone Bug 194,982 57
Phone Busy Indicator 172,763 24 *
Remote Telephone Ringer 87,726 3 *
Ringing Phone Light Flasher 172,430 33 *
Simple Phone Tap Derek Tombrello 322,639 98 *
Telephone Hold Button 91,367 9
Telephone Recorder 175,386 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.