Electronic Circuits

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
Saturday, November 07, 2009		 7 Segment LED Counter119
12VDC To 120VAC Inverter116
Yesterday
Friday, November 06, 2009		 12VDC To 120VAC Inverter577
Car Battery Charger416
Of All Time 12VDC To 120VAC Inverter559,529
FM Transmitter411,156

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 85,179 48 *
Car Alarm Arming Horn Beep Canceller bob 38,654 5 *
Wireless Auto Tachometer 134,802 52

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 57,833 29 *
Parallel (Printer) Port Interface 116,531 68

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 161,067 55 *
3 Channel Spectrum Analyzer 52,564 11
40W Fluorescent Lamp Inverter Bart Milnes 119,425 56 *
Adjustable Strobe Light 103,273 25
Black Light 100,629 27
Colour (Sound) Organ 107,943 26
Electronic Dice NEW! 3,613 1 *
Fantastic Atom Expander 64,197 22
Flash Slave Trigger 82,109 15 *
Infa-Red Remote Control 239,265 203 *
IR Remote Extender NEW! 2,157 0 *
IR Remote Jammer Carl 92,133 97 *
IR Remote Switch NEW! 2,707 0 *
LASER Transmitter/Receiver 138,394 83
LED Chaser 144,273 77 *
LED Metronome NEW! 2,225 0 *
LED Thermometer 71,430 14 *
Light/Dark Detector 108,032 82 *
Simple Colour Organ 46,207 7 *
Strobe Light 119,205 26 *
TRIAC Light Dimmer 176,360 50

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 152,214 119 *
Electromagnetic Levitator NEW! 3,512 0 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 302,786 188 *
AC Motor Speed Controller 66,716 17 *
Air Flow Detector 82,384 45 *
Digital Keypad Combination Lock 46,915 18
Low Voltage Alarm 69,153 48 *
Pine Racecar Victory Judge 27,164 0 *
Pulse Width Modulation DC Motor Control 260,288 87
Rain Detector 110,412 101 *
Simple Lie Detector 217,809 282
Simple Polarity Tester Dudley LeRoux 44,014 11 *
Simple Servo Controller 38,020 8 *
Simple Touch Switch NEW! 3,226 0 *
Simple Two Speed Contactor DC Motor Controller 76,778 19 *
Stepper Motor Controller 279,324 104 *
Time Delay Relay 165,321 65
Time Delay Relay II jawaharlal@excite.com 80,869 34 *
Touch Switch 118,057 47 *
Video Activated Relay 32,806 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 55,704 7 *
Water Detector With Sump/Bilge Pump Controller 40,614 16 *
Wire Loop Alarm Alex Meaden 72,729 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 4,027 0 *
12VDC To 120VAC Inverter 559,529 634
6V to 12V Converter 158,470 106
Automatic 12V Lead Acid Battery Charger 213,039 174
Automatic Load Sensing Power Switch 47,116 11 *
Car Battery Charger 364,316 140 *
Dual Polarity Power Supply 115,413 74 *
Fixed Voltage Power Supply 108,812 42 *
High Current Power Supply 118,340 58 *
High Voltage High Current Power Supply 95,818 25 *
LASER Power Supply 98,006 27
Portable CD Player Adapter For Car 76,856 11 *
Power Supply 307,808 249 *
Solid State Tesla Coil NEW! 2,388 (Not Yet Ranked) 0
Solid State Tesla Coil/High Voltage Generator 141,757 42
Transformerless Power Supply 162,057 107 *
Voltage Inverter 128,345 47 *
Voltage Inverter II 74,524 18 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 206,397 166
3 Watt FM Transmitter Rae XL Tkacik 107,585 68 *
50 Watt Amplifier 199,533 68
8 Note Tune Player 47,738 10 *
8 Watt Audio Amp 133,231 55 *
Aircraft Radio Communications Receiver 74,876 39 *
Crystal Radio 54,880 48 *
Digital Volume Control 127,582 40 *
Electronic Stethoscope 90,474 131 *
FET Audio Mixer 103,698 29
FM Transmitter 411,156 359
Guitar Fuzz Effect 72,064 44 *
Microphone Mixer Anatoly I. Shikhatov 81,363 20 *
Mono To Stereo Synthesizer oRbEq 35,362 14 *
One Tube Regenerative Radio NEW! 1,758 1 *
Op Amp Radio 123,303 65 *
Single Chip AM Radio NEW! 1,674 (Not Yet Ranked) 0 *
Single Chip FM Radio NEW! 2,808 0 *
Sound Level Meter 126,720 40 *
Stereo Tube Amplifier Weslee Kinsler 90,620 12 *
Tone Control 101,612 16
Transistor Organ 63,224 23

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 58,812 26 *
FM Telephone Bug 93,132 48
Phone Busy Indicator 58,022 19 *
Remote Telephone Ringer 37,503 2 *
Ringing Phone Light Flasher 69,604 24 *
Simple Phone Tap Derek Tombrello 167,306 92 *
Telephone Hold Button 35,096 7
Telephone Recorder 87,288 51 *

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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.