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 20, 2009		 12VDC To 120VAC Inverter509
7 Segment LED Counter363
Yesterday
Thursday, November 19, 2009		 12VDC To 120VAC Inverter572
7 Segment LED Counter477
Of All Time 12VDC To 120VAC Inverter566,988
FM Transmitter415,885

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 86,114 48 *
Car Alarm Arming Horn Beep Canceller bob 39,190 5 *
Wireless Auto Tachometer 136,415 52

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 58,500 29 *
Parallel (Printer) Port Interface 117,854 69

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 163,509 55 *
3 Channel Spectrum Analyzer 53,501 11
40W Fluorescent Lamp Inverter Bart Milnes 121,107 57 *
Adjustable Strobe Light 104,776 25
Black Light 101,827 27
Colour (Sound) Organ 109,515 27
Electronic Dice NEW! 4,646 1 *
Fantastic Atom Expander 65,000 22
Flash Slave Trigger 83,130 15 *
Infa-Red Remote Control 242,283 205 *
IR Remote Extender NEW! 2,842 0 *
IR Remote Jammer Carl 93,323 98 *
IR Remote Switch NEW! 3,493 2 *
LASER Transmitter/Receiver 140,370 83
LED Chaser 146,708 77 *
LED Metronome NEW! 2,867 0 *
LED Thermometer 72,396 14 *
Light/Dark Detector 109,662 83 *
Simple Colour Organ 46,793 7 *
Strobe Light 120,615 26 *
TRIAC Light Dimmer 179,125 50

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 153,962 119 *
Electromagnetic Levitator NEW! 4,346 1 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 308,723 190 *
AC Motor Speed Controller 68,667 17 *
Air Flow Detector 83,583 47 *
Digital Keypad Combination Lock 47,768 18
Low Voltage Alarm 70,100 48 *
Pine Racecar Victory Judge 27,516 0 *
Pulse Width Modulation DC Motor Control 264,378 87
Rain Detector 111,948 101 *
Simple Lie Detector 220,439 283
Simple Polarity Tester Dudley LeRoux 44,662 11 *
Simple Servo Controller 39,039 8 *
Simple Touch Switch NEW! 4,242 0 *
Simple Two Speed Contactor DC Motor Controller 77,782 19 *
Stepper Motor Controller 283,697 106 *
Time Delay Relay 168,578 65
Time Delay Relay II jawaharlal@excite.com 82,142 34 *
Touch Switch 119,720 47 *
Video Activated Relay 33,233 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 56,458 7 *
Water Detector With Sump/Bilge Pump Controller 41,286 16 *
Wire Loop Alarm Alex Meaden 73,780 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 5,406 2 *
12VDC To 120VAC Inverter 566,988 640
6V to 12V Converter 160,913 106
Automatic 12V Lead Acid Battery Charger 216,822 177
Automatic Load Sensing Power Switch 47,781 12 *
Car Battery Charger 369,737 141 *
Dual Polarity Power Supply 117,169 74 *
Fixed Voltage Power Supply 110,145 42 *
High Current Power Supply 120,052 58 *
High Voltage High Current Power Supply 97,250 25 *
LASER Power Supply 99,483 27
Portable CD Player Adapter For Car 77,827 11 *
Power Supply 311,835 249 *
Solid State Tesla Coil NEW! 3,136 0
Solid State Tesla Coil/High Voltage Generator 143,699 42
Transformerless Power Supply 164,298 107 *
Voltage Inverter 130,069 47 *
Voltage Inverter II 75,465 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 208,800 167
3 Watt FM Transmitter Rae XL Tkacik 109,264 68 *
50 Watt Amplifier 201,970 70
8 Note Tune Player 48,376 10 *
8 Watt Audio Amp 134,942 57 *
Aircraft Radio Communications Receiver 76,219 40 *
Crystal Radio 55,652 50 *
Digital Volume Control 129,416 40 *
Electronic Stethoscope 91,534 131 *
FET Audio Mixer 105,166 30
FM Transmitter 415,885 362
Guitar Fuzz Effect 73,057 45 *
Microphone Mixer Anatoly I. Shikhatov 82,566 20 *
Mono To Stereo Synthesizer oRbEq 35,708 14 *
One Tube Regenerative Radio NEW! 2,386 1 *
Op Amp Radio 124,836 66 *
Single Chip AM Radio NEW! 2,169 0 *
Single Chip FM Radio NEW! 3,648 0 *
Sound Level Meter 128,326 41 *
Stereo Tube Amplifier Weslee Kinsler 91,692 12 *
Tone Control 103,188 20
Transistor Organ 64,076 23

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 59,555 26 *
FM Telephone Bug 94,265 49
Phone Busy Indicator 58,662 19 *
Remote Telephone Ringer 38,004 2 *
Ringing Phone Light Flasher 70,457 24 *
Simple Phone Tap Derek Tombrello 169,196 92 *
Telephone Hold Button 35,476 7
Telephone Recorder 88,152 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.