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
Friday, November 20, 2009		 12VDC To 120VAC Inverter460
7 Segment LED Counter343
Yesterday
Thursday, November 19, 2009		 12VDC To 120VAC Inverter572
7 Segment LED Counter477
Of All Time 12VDC To 120VAC Inverter566,939
FM Transmitter415,855

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 86,110 48 *
Car Alarm Arming Horn Beep Canceller bob 39,189 5 *
Wireless Auto Tachometer 136,406 52

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 58,494 29 *
Parallel (Printer) Port Interface 117,842 69

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 163,499 55 *
3 Channel Spectrum Analyzer 53,495 11
40W Fluorescent Lamp Inverter Bart Milnes 121,094 57 *
Adjustable Strobe Light 104,761 25
Black Light 101,817 27
Colour (Sound) Organ 109,496 27
Electronic Dice NEW! 4,639 1 *
Fantastic Atom Expander 64,989 22
Flash Slave Trigger 83,125 15 *
Infa-Red Remote Control 242,270 205 *
IR Remote Extender NEW! 2,837 0 *
IR Remote Jammer Carl 93,319 98 *
IR Remote Switch NEW! 3,489 2 *
LASER Transmitter/Receiver 140,359 83
LED Chaser 146,695 77 *
LED Metronome NEW! 2,861 0 *
LED Thermometer 72,387 14 *
Light/Dark Detector 109,647 83 *
Simple Colour Organ 46,784 7 *
Strobe Light 120,605 26 *
TRIAC Light Dimmer 179,111 50

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 153,943 119 *
Electromagnetic Levitator NEW! 4,340 1 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 308,703 190 *
AC Motor Speed Controller 68,659 17 *
Air Flow Detector 83,576 47 *
Digital Keypad Combination Lock 47,758 18
Low Voltage Alarm 70,092 48 *
Pine Racecar Victory Judge 27,514 0 *
Pulse Width Modulation DC Motor Control 264,355 87
Rain Detector 111,941 101 *
Simple Lie Detector 220,413 283
Simple Polarity Tester Dudley LeRoux 44,660 11 *
Simple Servo Controller 39,029 8 *
Simple Touch Switch NEW! 4,238 0 *
Simple Two Speed Contactor DC Motor Controller 77,775 19 *
Stepper Motor Controller 283,680 106 *
Time Delay Relay 168,561 65
Time Delay Relay II jawaharlal@excite.com 82,136 34 *
Touch Switch 119,708 47 *
Video Activated Relay 33,228 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 56,449 7 *
Water Detector With Sump/Bilge Pump Controller 41,279 16 *
Wire Loop Alarm Alex Meaden 73,773 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 5,396 2 *
12VDC To 120VAC Inverter 566,939 640
6V to 12V Converter 160,888 106
Automatic 12V Lead Acid Battery Charger 216,808 177
Automatic Load Sensing Power Switch 47,775 12 *
Car Battery Charger 369,719 141 *
Dual Polarity Power Supply 117,163 74 *
Fixed Voltage Power Supply 110,130 42 *
High Current Power Supply 120,040 58 *
High Voltage High Current Power Supply 97,238 25 *
LASER Power Supply 99,477 27
Portable CD Player Adapter For Car 77,819 11 *
Power Supply 311,810 249 *
Solid State Tesla Coil NEW! 3,128 0
Solid State Tesla Coil/High Voltage Generator 143,683 42
Transformerless Power Supply 164,282 107 *
Voltage Inverter 130,062 47 *
Voltage Inverter II 75,457 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 208,790 167
3 Watt FM Transmitter Rae XL Tkacik 109,255 68 *
50 Watt Amplifier 201,956 70
8 Note Tune Player 48,372 10 *
8 Watt Audio Amp 134,928 57 *
Aircraft Radio Communications Receiver 76,208 40 *
Crystal Radio 55,644 50 *
Digital Volume Control 129,400 40 *
Electronic Stethoscope 91,525 131 *
FET Audio Mixer 105,161 30
FM Transmitter 415,855 362
Guitar Fuzz Effect 73,048 45 *
Microphone Mixer Anatoly I. Shikhatov 82,558 20 *
Mono To Stereo Synthesizer oRbEq 35,704 14 *
One Tube Regenerative Radio NEW! 2,378 1 *
Op Amp Radio 124,828 66 *
Single Chip AM Radio NEW! 2,162 0 *
Single Chip FM Radio NEW! 3,643 0 *
Sound Level Meter 128,315 41 *
Stereo Tube Amplifier Weslee Kinsler 91,680 12 *
Tone Control 103,178 20
Transistor Organ 64,069 23

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 59,553 26 *
FM Telephone Bug 94,262 49
Phone Busy Indicator 58,659 19 *
Remote Telephone Ringer 37,999 2 *
Ringing Phone Light Flasher 70,451 24 *
Simple Phone Tap Derek Tombrello 169,178 92 *
Telephone Hold Button 35,476 7
Telephone Recorder 88,148 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.