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
Wednesday, November 25, 2009		 12VDC To 120VAC Inverter49
7 Segment LED Counter47
Yesterday
Tuesday, November 24, 2009		 12VDC To 120VAC Inverter632
7 Segment LED Counter497
Of All Time 12VDC To 120VAC Inverter569,398
FM Transmitter417,519

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 86,427 48 *
Car Alarm Arming Horn Beep Canceller bob 39,366 5 *
Wireless Auto Tachometer 136,903 52

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 58,705 29 *
Parallel (Printer) Port Interface 118,325 69

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 164,203 55 *
3 Channel Spectrum Analyzer 53,786 11
40W Fluorescent Lamp Inverter Bart Milnes 121,637 57 *
Adjustable Strobe Light 105,201 25
Black Light 102,192 27
Colour (Sound) Organ 109,989 27
Electronic Dice NEW! 4,988 1 *
Fantastic Atom Expander 65,252 22
Flash Slave Trigger 83,474 15 *
Infa-Red Remote Control 243,164 205 *
IR Remote Extender NEW! 3,058 0 *
IR Remote Jammer Carl 93,676 98 *
IR Remote Switch NEW! 3,795 2 *
LASER Transmitter/Receiver 141,024 83
LED Chaser 147,441 77 *
LED Metronome NEW! 3,056 0 *
LED Thermometer 72,718 16 *
Light/Dark Detector 110,152 83 *
Simple Colour Organ 46,974 7 *
Strobe Light 121,013 26 *
TRIAC Light Dimmer 179,968 50

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 154,482 119 *
Electromagnetic Levitator NEW! 4,648 1 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 310,508 190 *
AC Motor Speed Controller 69,185 17 *
Air Flow Detector 83,921 47 *
Digital Keypad Combination Lock 48,058 18
Low Voltage Alarm 70,436 48 *
Pine Racecar Victory Judge 27,637 0 *
Pulse Width Modulation DC Motor Control 265,630 87
Rain Detector 112,349 101 *
Simple Lie Detector 221,205 283
Simple Polarity Tester Dudley LeRoux 44,846 11 *
Simple Servo Controller 39,307 8 *
Simple Touch Switch NEW! 4,521 0 *
Simple Two Speed Contactor DC Motor Controller 78,042 19 *
Stepper Motor Controller 285,002 106 *
Time Delay Relay 169,592 65
Time Delay Relay II jawaharlal@excite.com 82,549 34 *
Touch Switch 120,197 47 *
Video Activated Relay 33,384 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 56,722 7 *
Water Detector With Sump/Bilge Pump Controller 41,505 16 *
Wire Loop Alarm Alex Meaden 74,067 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 6,005 2 *
12VDC To 120VAC Inverter 569,398 641
6V to 12V Converter 161,637 107
Automatic 12V Lead Acid Battery Charger 218,035 177
Automatic Load Sensing Power Switch 47,992 12 *
Car Battery Charger 371,364 141 *
Dual Polarity Power Supply 117,663 74 *
Fixed Voltage Power Supply 110,626 42 *
High Current Power Supply 120,583 58 *
High Voltage High Current Power Supply 97,651 25 *
LASER Power Supply 99,892 27
Portable CD Player Adapter For Car 78,150 11 *
Power Supply 313,020 249 *
Solid State Tesla Coil NEW! 3,398 0
Solid State Tesla Coil/High Voltage Generator 144,282 42
Transformerless Power Supply 165,023 107 *
Voltage Inverter 130,580 47 *
Voltage Inverter II 75,769 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 209,504 167
3 Watt FM Transmitter Rae XL Tkacik 109,757 68 *
50 Watt Amplifier 202,720 70
8 Note Tune Player 48,542 10 *
8 Watt Audio Amp 135,513 57 *
Aircraft Radio Communications Receiver 76,665 40 *
Crystal Radio 55,886 50 *
Digital Volume Control 129,992 40 *
Electronic Stethoscope 91,904 132 *
FET Audio Mixer 105,642 30
FM Transmitter 417,519 363
Guitar Fuzz Effect 73,349 45 *
Microphone Mixer Anatoly I. Shikhatov 82,923 20 *
Mono To Stereo Synthesizer oRbEq 35,835 14 *
One Tube Regenerative Radio NEW! 2,587 1 *
Op Amp Radio 125,297 66 *
Single Chip AM Radio NEW! 2,325 0 *
Single Chip FM Radio NEW! 3,921 0 *
Sound Level Meter 128,825 41 *
Stereo Tube Amplifier Weslee Kinsler 92,045 12 *
Tone Control 103,630 20
Transistor Organ 64,378 23

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 59,783 26 *
FM Telephone Bug 94,613 49
Phone Busy Indicator 58,882 19 *
Remote Telephone Ringer 38,170 2 *
Ringing Phone Light Flasher 70,734 24 *
Simple Phone Tap Derek Tombrello 169,784 92 *
Telephone Hold Button 35,612 7
Telephone Recorder 88,421 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.