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
Thursday, September 02, 2010		 12VDC To 120VAC Inverter298
7 Segment LED Counter249
Yesterday
Wednesday, September 01, 2010		 12VDC To 120VAC Inverter464
FM Transmitter320
Of All Time 12VDC To 120VAC Inverter725,199
FM Transmitter518,352

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 104,529 53 *
Car Alarm Arming Horn Beep Canceller bob 49,173 6 *
Wireless Auto Tachometer 165,622 54

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 69,709 29 *
Parallel (Printer) Port Interface 141,779 69

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 208,684 57 *
3 Channel Spectrum Analyzer 70,386 12
40W Fluorescent Lamp Inverter Bart Milnes 152,610 58 *
Adjustable Strobe Light 129,255 30
Black Light 122,413 28
Colour (Sound) Organ 135,459 31
Electronic Dice NEW! 34,124 3 *
Fantastic Atom Expander 78,895 22
Flash Slave Trigger 101,394 15 *
Infa-Red Remote Control 305,157 211 *
IR Remote Extender NEW! 14,887 0 *
IR Remote Jammer Carl 114,505 101 *
IR Remote Switch NEW! 21,094 5 *
LASER Transmitter/Receiver 185,714 86
LED Chaser 192,738 80 *
LED Metronome NEW! 15,003 2 *
LED Thermometer 90,313 18 *
Light/Dark Detector 138,371 86 *
Simple Colour Organ 57,052 10 *
Strobe Light 142,707 26 *
TRIAC Light Dimmer 224,011 51

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 187,312 121 *
Electromagnetic Levitator NEW! 23,861 6 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 410,577 200 *
AC Motor Speed Controller 104,071 21 *
Air Flow Detector 104,605 51 *
Digital Keypad Combination Lock 64,840 18
Low Voltage Alarm 89,451 52 *
Pine Racecar Victory Judge 33,725 0 *
Pulse Width Modulation DC Motor Control 328,558 88
Rain Detector 141,050 105 *
Simple Lie Detector 272,210 299
Simple Polarity Tester Dudley LeRoux 55,919 11 *
Simple Servo Controller 56,167 13 *
Simple Touch Switch NEW! 24,405 1 *
Simple Two Speed Contactor DC Motor Controller 95,151 20 *
Stepper Motor Controller 366,710 111 *
Time Delay Relay 230,975 69
Time Delay Relay II jawaharlal@excite.com 105,485 35 *
Touch Switch 147,664 49 *
Video Activated Relay 41,304 7 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 70,647 9 *
Water Detector With Sump/Bilge Pump Controller 53,812 17 *
Wire Loop Alarm Alex Meaden 91,914 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 34,952 10 *
12VDC To 120VAC Inverter 725,199 651
6V to 12V Converter 212,134 110
Automatic 12V Lead Acid Battery Charger 305,057 195
Automatic Load Sensing Power Switch 60,544 12 *
Car Battery Charger 473,499 152 *
Dual Polarity Power Supply 149,792 78 *
Fixed Voltage Power Supply 138,664 45 *
High Current Power Supply 150,434 59 *
High Voltage High Current Power Supply 120,776 28 *
LASER Power Supply 124,719 27
Portable CD Player Adapter For Car 96,107 11 *
Power Supply 385,433 252 *
Solid State Tesla Coil NEW! 19,084 2
Solid State Tesla Coil/High Voltage Generator 181,136 46
Transformerless Power Supply 210,143 110 *
Voltage Inverter 162,376 50 *
Voltage Inverter II 92,838 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 259,664 172
3 Watt FM Transmitter Rae XL Tkacik 144,179 71 *
50 Watt Amplifier 250,898 72
8 Note Tune Player 58,795 10 *
8 Watt Audio Amp 166,505 58 *
Aircraft Radio Communications Receiver 102,554 42 *
Crystal Radio 68,847 51 *
Digital Volume Control 162,118 43 *
Electronic Stethoscope 114,067 134 *
FET Audio Mixer 132,703 32
FM Transmitter 518,352 379
Guitar Fuzz Effect 93,719 45 *
Microphone Mixer Anatoly I. Shikhatov 104,910 22 *
Mono To Stereo Synthesizer oRbEq 42,847 14 *
One Tube Regenerative Radio NEW! 13,874 1 *
Op Amp Radio 154,465 71 *
Single Chip AM Radio NEW! 11,663 0 *
Single Chip FM Radio NEW! 20,522 0 *
Sound Level Meter 157,882 45 *
Stereo Tube Amplifier Weslee Kinsler 111,415 13 *
Tone Control 132,516 24
Transistor Organ 80,221 26

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 72,898 26 *
FM Telephone Bug 114,801 56
Phone Busy Indicator 70,666 20 *
Remote Telephone Ringer 47,039 3 *
Ringing Phone Light Flasher 87,492 24 *
Simple Phone Tap Derek Tombrello 203,940 92 *
Telephone Hold Button 42,777 7
Telephone Recorder 105,310 52 *

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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.