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		 12VDC To 120VAC Inverter338
Car Battery Charger292
Yesterday
Friday, November 06, 2009		 12VDC To 120VAC Inverter577
Car Battery Charger416
Of All Time 12VDC To 120VAC Inverter559,751
FM Transmitter411,279

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 85,198 48 *
Car Alarm Arming Horn Beep Canceller bob 38,664 5 *
Wireless Auto Tachometer 134,850 52

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 57,861 29 *
Parallel (Printer) Port Interface 116,568 68

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 161,131 55 *
3 Channel Spectrum Analyzer 52,593 11
40W Fluorescent Lamp Inverter Bart Milnes 119,471 56 *
Adjustable Strobe Light 103,307 25
Black Light 100,664 27
Colour (Sound) Organ 107,986 26
Electronic Dice NEW! 3,631 1 *
Fantastic Atom Expander 64,211 22
Flash Slave Trigger 82,140 15 *
Infa-Red Remote Control 239,356 203 *
IR Remote Extender NEW! 2,172 0 *
IR Remote Jammer Carl 92,173 97 *
IR Remote Switch NEW! 2,726 0 *
LASER Transmitter/Receiver 138,437 83
LED Chaser 144,321 77 *
LED Metronome NEW! 2,248 0 *
LED Thermometer 71,450 14 *
Light/Dark Detector 108,082 82 *
Simple Colour Organ 46,226 7 *
Strobe Light 119,245 26 *
TRIAC Light Dimmer 176,442 50

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 152,268 119 *
Electromagnetic Levitator NEW! 3,526 0 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 302,914 188 *
AC Motor Speed Controller 66,757 17 *
Air Flow Detector 82,410 45 *
Digital Keypad Combination Lock 46,931 18
Low Voltage Alarm 69,184 48 *
Pine Racecar Victory Judge 27,174 0 *
Pulse Width Modulation DC Motor Control 260,406 87
Rain Detector 110,467 101 *
Simple Lie Detector 217,871 282
Simple Polarity Tester Dudley LeRoux 44,028 11 *
Simple Servo Controller 38,053 8 *
Simple Touch Switch NEW! 3,256 0 *
Simple Two Speed Contactor DC Motor Controller 76,810 19 *
Stepper Motor Controller 279,440 104 *
Time Delay Relay 165,390 65
Time Delay Relay II jawaharlal@excite.com 80,909 34 *
Touch Switch 118,109 47 *
Video Activated Relay 32,814 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 55,726 7 *
Water Detector With Sump/Bilge Pump Controller 40,630 16 *
Wire Loop Alarm Alex Meaden 72,765 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 4,060 0 *
12VDC To 120VAC Inverter 559,751 634
6V to 12V Converter 158,541 106
Automatic 12V Lead Acid Battery Charger 213,148 174
Automatic Load Sensing Power Switch 47,140 11 *
Car Battery Charger 364,509 140 *
Dual Polarity Power Supply 115,457 74 *
Fixed Voltage Power Supply 108,854 42 *
High Current Power Supply 118,394 58 *
High Voltage High Current Power Supply 95,860 25 *
LASER Power Supply 98,052 27
Portable CD Player Adapter For Car 76,887 11 *
Power Supply 307,907 249 *
Solid State Tesla Coil NEW! 2,409 (Not Yet Ranked) 0
Solid State Tesla Coil/High Voltage Generator 141,825 42
Transformerless Power Supply 162,113 107 *
Voltage Inverter 128,404 47 *
Voltage Inverter II 74,554 18 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 206,470 166
3 Watt FM Transmitter Rae XL Tkacik 107,637 68 *
50 Watt Amplifier 199,620 68
8 Note Tune Player 47,747 10 *
8 Watt Audio Amp 133,268 55 *
Aircraft Radio Communications Receiver 74,907 39 *
Crystal Radio 54,909 48 *
Digital Volume Control 127,629 40 *
Electronic Stethoscope 90,519 131 *
FET Audio Mixer 103,732 29
FM Transmitter 411,279 359
Guitar Fuzz Effect 72,097 44 *
Microphone Mixer Anatoly I. Shikhatov 81,395 20 *
Mono To Stereo Synthesizer oRbEq 35,371 14 *
One Tube Regenerative Radio NEW! 1,774 1 *
Op Amp Radio 123,340 65 *
Single Chip AM Radio NEW! 1,686 (Not Yet Ranked) 0 *
Single Chip FM Radio NEW! 2,825 0 *
Sound Level Meter 126,765 40 *
Stereo Tube Amplifier Weslee Kinsler 90,648 12 *
Tone Control 101,662 16
Transistor Organ 63,251 23

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 58,826 26 *
FM Telephone Bug 93,167 48
Phone Busy Indicator 58,041 19 *
Remote Telephone Ringer 37,515 2 *
Ringing Phone Light Flasher 69,625 24 *
Simple Phone Tap Derek Tombrello 167,351 92 *
Telephone Hold Button 35,108 7
Telephone Recorder 87,319 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.