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, December 05, 2009		 12VDC To 120VAC Inverter416
Car Battery Charger291
Yesterday
Friday, December 04, 2009		 12VDC To 120VAC Inverter547
7 Segment LED Counter417
Of All Time 12VDC To 120VAC Inverter575,185
FM Transmitter421,307

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 87,179 49 *
Car Alarm Arming Horn Beep Canceller bob 39,753 5 *
Wireless Auto Tachometer 138,052 52

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 59,226 29 *
Parallel (Printer) Port Interface 119,375 69

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 166,013 55 *
3 Channel Spectrum Analyzer 54,464 11
40W Fluorescent Lamp Inverter Bart Milnes 122,896 57 *
Adjustable Strobe Light 106,282 26
Black Light 103,050 27
Colour (Sound) Organ 111,339 27
Electronic Dice NEW! 5,724 1 *
Fantastic Atom Expander 65,849 22
Flash Slave Trigger 84,261 15 *
Infa-Red Remote Control 245,505 205 *
IR Remote Extender NEW! 3,563 0 *
IR Remote Jammer Carl 94,518 98 *
IR Remote Switch NEW! 4,428 2 *
LASER Transmitter/Receiver 142,738 83
LED Chaser 149,528 77 *
LED Metronome NEW! 3,549 0 *
LED Thermometer 73,501 16 *
Light/Dark Detector 111,281 83 *
Simple Colour Organ 47,418 7 *
Strobe Light 121,947 26 *
TRIAC Light Dimmer 182,082 50

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 155,824 119 *
Electromagnetic Levitator NEW! 5,381 1 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 315,212 190 *
AC Motor Speed Controller 70,543 18 *
Air Flow Detector 84,801 47 *
Digital Keypad Combination Lock 48,681 18
Low Voltage Alarm 71,175 48 *
Pine Racecar Victory Judge 27,887 0 *
Pulse Width Modulation DC Motor Control 268,529 87
Rain Detector 113,389 102 *
Simple Lie Detector 223,386 283
Simple Polarity Tester Dudley LeRoux 45,315 11 *
Simple Servo Controller 39,932 8 *
Simple Touch Switch NEW! 5,243 0 *
Simple Two Speed Contactor DC Motor Controller 78,725 19 *
Stepper Motor Controller 288,344 106 *
Time Delay Relay 172,012 65
Time Delay Relay II jawaharlal@excite.com 83,485 34 *
Touch Switch 121,478 47 *
Video Activated Relay 33,717 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 57,382 7 *
Water Detector With Sump/Bilge Pump Controller 41,988 16 *
Wire Loop Alarm Alex Meaden 74,820 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 7,039 4 *
12VDC To 120VAC Inverter 575,185 641
6V to 12V Converter 163,622 107
Automatic 12V Lead Acid Battery Charger 221,137 177
Automatic Load Sensing Power Switch 48,552 12 *
Car Battery Charger 375,686 141 *
Dual Polarity Power Supply 119,008 74 *
Fixed Voltage Power Supply 111,782 42 *
High Current Power Supply 121,933 58 *
High Voltage High Current Power Supply 98,703 25 *
LASER Power Supply 100,988 27
Portable CD Player Adapter For Car 78,928 11 *
Power Supply 316,048 249 *
Solid State Tesla Coil NEW! 4,065 0
Solid State Tesla Coil/High Voltage Generator 145,904 42
Transformerless Power Supply 166,921 107 *
Voltage Inverter 131,897 47 *
Voltage Inverter II 76,510 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 211,616 167
3 Watt FM Transmitter Rae XL Tkacik 111,068 68 *
50 Watt Amplifier 204,746 70
8 Note Tune Player 49,002 10 *
8 Watt Audio Amp 136,882 57 *
Aircraft Radio Communications Receiver 77,812 40 *
Crystal Radio 56,430 50 *
Digital Volume Control 131,501 40 *
Electronic Stethoscope 92,716 132 *
FET Audio Mixer 106,773 30
FM Transmitter 421,307 363
Guitar Fuzz Effect 74,165 45 *
Microphone Mixer Anatoly I. Shikhatov 83,865 20 *
Mono To Stereo Synthesizer oRbEq 36,098 14 *
One Tube Regenerative Radio NEW! 3,058 1 *
Op Amp Radio 126,508 66 *
Single Chip AM Radio NEW! 2,733 0 *
Single Chip FM Radio NEW! 4,601 0 *
Sound Level Meter 129,973 41 *
Stereo Tube Amplifier Weslee Kinsler 92,851 12 *
Tone Control 104,791 21
Transistor Organ 65,109 23

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 60,316 26 *
FM Telephone Bug 95,454 49
Phone Busy Indicator 59,331 19 *
Remote Telephone Ringer 38,552 2 *
Ringing Phone Light Flasher 71,412 24 *
Simple Phone Tap Derek Tombrello 171,312 92 *
Telephone Hold Button 35,864 7
Telephone Recorder 89,099 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.