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 27, 2009		 12VDC To 120VAC Inverter381
Car Battery Charger334
Yesterday
Thursday, November 26, 2009		 12VDC To 120VAC Inverter468
7 Segment LED Counter415
Of All Time 12VDC To 120VAC Inverter570,784
FM Transmitter418,470

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 86,605 48 *
Car Alarm Arming Horn Beep Canceller bob 39,464 5 *
Wireless Auto Tachometer 137,181 52

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 58,851 29 *
Parallel (Printer) Port Interface 118,594 69

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 164,622 55 *
3 Channel Spectrum Analyzer 53,967 11
40W Fluorescent Lamp Inverter Bart Milnes 121,951 57 *
Adjustable Strobe Light 105,479 26
Black Light 102,408 27
Colour (Sound) Organ 110,304 27
Electronic Dice NEW! 5,187 1 *
Fantastic Atom Expander 65,396 22
Flash Slave Trigger 83,666 15 *
Infa-Red Remote Control 243,711 205 *
IR Remote Extender NEW! 3,210 0 *
IR Remote Jammer Carl 93,877 98 *
IR Remote Switch NEW! 3,978 2 *
LASER Transmitter/Receiver 141,424 83
LED Chaser 147,930 77 *
LED Metronome NEW! 3,185 0 *
LED Thermometer 72,893 16 *
Light/Dark Detector 110,440 83 *
Simple Colour Organ 47,090 7 *
Strobe Light 121,221 26 *
TRIAC Light Dimmer 180,517 50

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 154,826 119 *
Electromagnetic Levitator NEW! 4,850 1 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 311,733 190 *
AC Motor Speed Controller 69,545 18 *
Air Flow Detector 84,148 47 *
Digital Keypad Combination Lock 48,228 18
Low Voltage Alarm 70,621 48 *
Pine Racecar Victory Judge 27,694 0 *
Pulse Width Modulation DC Motor Control 266,337 87
Rain Detector 112,629 101 *
Simple Lie Detector 221,862 283
Simple Polarity Tester Dudley LeRoux 44,970 11 *
Simple Servo Controller 39,467 8 *
Simple Touch Switch NEW! 4,710 0 *
Simple Two Speed Contactor DC Motor Controller 78,205 19 *
Stepper Motor Controller 285,810 106 *
Time Delay Relay 170,218 65
Time Delay Relay II jawaharlal@excite.com 82,789 34 *
Touch Switch 120,526 47 *
Video Activated Relay 33,469 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 56,899 7 *
Water Detector With Sump/Bilge Pump Controller 41,642 16 *
Wire Loop Alarm Alex Meaden 74,269 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 6,265 2 *
12VDC To 120VAC Inverter 570,784 641
6V to 12V Converter 162,153 107
Automatic 12V Lead Acid Battery Charger 218,794 177
Automatic Load Sensing Power Switch 48,124 12 *
Car Battery Charger 372,460 141 *
Dual Polarity Power Supply 118,020 74 *
Fixed Voltage Power Supply 110,912 42 *
High Current Power Supply 120,927 58 *
High Voltage High Current Power Supply 97,915 25 *
LASER Power Supply 100,190 27
Portable CD Player Adapter For Car 78,320 11 *
Power Supply 313,780 249 *
Solid State Tesla Coil NEW! 3,576 0
Solid State Tesla Coil/High Voltage Generator 144,662 42
Transformerless Power Supply 165,514 107 *
Voltage Inverter 130,925 47 *
Voltage Inverter II 75,953 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 209,985 167
3 Watt FM Transmitter Rae XL Tkacik 110,079 68 *
50 Watt Amplifier 203,231 70
8 Note Tune Player 48,658 10 *
8 Watt Audio Amp 135,873 57 *
Aircraft Radio Communications Receiver 76,942 40 *
Crystal Radio 56,006 50 *
Digital Volume Control 130,350 40 *
Electronic Stethoscope 92,111 132 *
FET Audio Mixer 105,930 30
FM Transmitter 418,470 363
Guitar Fuzz Effect 73,523 45 *
Microphone Mixer Anatoly I. Shikhatov 83,161 20 *
Mono To Stereo Synthesizer oRbEq 35,903 14 *
One Tube Regenerative Radio NEW! 2,717 1 *
Op Amp Radio 125,589 66 *
Single Chip AM Radio NEW! 2,428 0 *
Single Chip FM Radio NEW! 4,093 0 *
Sound Level Meter 129,082 41 *
Stereo Tube Amplifier Weslee Kinsler 92,281 12 *
Tone Control 103,952 21
Transistor Organ 64,528 23

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 59,930 26 *
FM Telephone Bug 94,810 49
Phone Busy Indicator 58,988 19 *
Remote Telephone Ringer 38,269 2 *
Ringing Phone Light Flasher 70,881 24 *
Simple Phone Tap Derek Tombrello 170,111 92 *
Telephone Hold Button 35,677 7
Telephone Recorder 88,595 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.