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 17
Major Projects 1
Other 20
Power Supply 16
Sound/Radio 19
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
Monday, October 06, 2008		 12VDC To 120VAC Inverter318
7 Segment LED Counter232
Yesterday
Sunday, October 05, 2008		 12VDC To 120VAC Inverter494
Car Battery Charger338
Of All Time 12VDC To 120VAC Inverter345,820
FM Transmitter266,919

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 57,343 43 *
Car Alarm Arming Horn Beep Canceller NEW! bob 19,011 3 *
Wireless Auto Tachometer 85,390 46

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 37,409 26 *
Parallel (Printer) Port Interface 75,468 61

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 95,309 45 *
3 Channel Spectrum Analyzer 31,466 10
40W Fluorescent Lamp Inverter Bart Milnes 71,136 41 *
Adjustable Strobe Light 64,887 18
Black Light 64,692 24
Colour (Sound) Organ 67,080 21
Fantastic Atom Expander 39,933 16
Flash Slave Trigger 50,483 12 *
Infa-Red Remote Control 151,037 185 *
IR Remote Jammer Carl 57,381 81 *
LASER Transmitter/Receiver 85,726 77
LED Chaser 84,325 66 *
LED Thermometer NEW! 34,165 11 *
Light/Dark Detector 64,511 73 *
Simple Colour Organ 23,590 6 *
Strobe Light 79,066 19 *
TRIAC Light Dimmer 106,926 46

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 98,952 112 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 169,993 160 *
AC Motor Speed Controller NEW! 24,058 7 *
Air Flow Detector 50,702 40 *
Digital Keypad Combination Lock NEW! 20,708 10
Low Voltage Alarm 40,321 42 *
Pine Racecar Victory Judge 16,499 0 *
Pulse Width Modulation DC Motor Control 155,876 76
Rain Detector 66,446 86 *
Simple Lie Detector 131,384 246
Simple Polarity Tester Dudley LeRoux 26,516 11 *
Simple Servo Controller NEW! 15,931 2 *
Simple Two Speed Contactor DC Motor Controller 48,722 17 *
Stepper Motor Controller 167,498 91 *
Time Delay Relay 92,040 46
Time Delay Relay II jawaharlal@excite.com 47,773 27 *
Touch Switch 70,221 39 *
Video Activated Relay 20,371 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 34,887 5 *
Water Detector With Sump/Bilge Pump Controller NEW! 18,501 12 *
Wire Loop Alarm Alex Meaden 44,130 24 *

Power Supply

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Circuit Author Views Rank Comments Marker
12VDC To 120VAC Inverter 345,820 567
6V to 12V Converter 94,768 88
Automatic 12V Lead Acid Battery Charger 116,038 133
Automatic Load Sensing Power Switch NEW! 21,977 8 *
Car Battery Charger 219,509 114 *
Dual Polarity Power Supply 67,243 66 *
Fixed Voltage Power Supply 56,088 39 *
High Current Power Supply 72,885 49 *
High Voltage High Current Power Supply 58,228 18 *
LASER Power Supply 59,356 23
Portable CD Player Adapter For Car 47,571 8 *
Power Supply 190,036 229 *
Solid State Tesla Coil/High Voltage Generator 85,440 34
Transformerless Power Supply 98,670 92 *
Voltage Inverter 81,551 42 *
Voltage Inverter II 45,989 13 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 123,648 137
3 Watt FM Transmitter Rae XL Tkacik 64,232 62 *
50 Watt Amplifier 124,343 64
8 Note Tune Player 29,259 8 *
8 Watt Audio Amp 82,092 51 *
Aircraft Radio Communications Receiver NEW! 33,285 22 *
Crystal Radio 33,801 41 *
Digital Volume Control 77,629 36 *
Electronic Stethoscope 56,326 117 *
FET Audio Mixer 63,096 21
FM Transmitter 266,919 327
Guitar Fuzz Effect 44,263 32 *
Microphone Mixer Anatoly I. Shikhatov 47,734 18 *
Mono To Stereo Synthesizer oRbEq 22,993 12 *
Op Amp Radio 76,724 52 *
Sound Level Meter 79,237 32 *
Stereo Tube Amplifier Weslee Kinsler 55,458 9 *
Tone Control 60,034 10
Transistor Organ 36,696 15

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 36,391 22 *
FM Telephone Bug 58,837 43
Phone Busy Indicator 39,209 14 *
Remote Telephone Ringer NEW! 17,184 1 *
Ringing Phone Light Flasher 43,939 22 *
Simple Phone Tap Derek Tombrello 105,651 73 *
Telephone Hold Button 21,669 7
Telephone Recorder 58,197 49 *

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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.