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
Monday, November 23, 2009		 12VDC To 120VAC Inverter171
7 Segment LED Counter153
Yesterday
Sunday, November 22, 2009		 12VDC To 120VAC Inverter570
7 Segment LED Counter395
Of All Time 12VDC To 120VAC Inverter568,288
FM Transmitter416,724

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 86,294 48 *
Car Alarm Arming Horn Beep Canceller bob 39,291 5 *
Wireless Auto Tachometer 136,698 52

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 58,626 29 *
Parallel (Printer) Port Interface 118,105 69

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 163,884 55 *
3 Channel Spectrum Analyzer 53,652 11
40W Fluorescent Lamp Inverter Bart Milnes 121,401 57 *
Adjustable Strobe Light 104,994 25
Black Light 102,021 27
Colour (Sound) Organ 109,740 27
Electronic Dice NEW! 4,830 1 *
Fantastic Atom Expander 65,137 22
Flash Slave Trigger 83,305 15 *
Infa-Red Remote Control 242,760 205 *
IR Remote Extender NEW! 2,929 0 *
IR Remote Jammer Carl 93,516 98 *
IR Remote Switch NEW! 3,648 2 *
LASER Transmitter/Receiver 140,726 83
LED Chaser 147,132 77 *
LED Metronome NEW! 2,962 0 *
LED Thermometer 72,552 14 *
Light/Dark Detector 109,903 83 *
Simple Colour Organ 46,898 7 *
Strobe Light 120,843 26 *
TRIAC Light Dimmer 179,542 50

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 154,244 119 *
Electromagnetic Levitator NEW! 4,482 1 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 309,667 190 *
AC Motor Speed Controller 68,948 17 *
Air Flow Detector 83,746 47 *
Digital Keypad Combination Lock 47,918 18
Low Voltage Alarm 70,257 48 *
Pine Racecar Victory Judge 27,589 0 *
Pulse Width Modulation DC Motor Control 265,018 87
Rain Detector 112,184 101 *
Simple Lie Detector 220,818 283
Simple Polarity Tester Dudley LeRoux 44,760 11 *
Simple Servo Controller 39,174 8 *
Simple Touch Switch NEW! 4,396 0 *
Simple Two Speed Contactor DC Motor Controller 77,908 19 *
Stepper Motor Controller 284,391 106 *
Time Delay Relay 169,099 65
Time Delay Relay II jawaharlal@excite.com 82,348 34 *
Touch Switch 119,977 47 *
Video Activated Relay 33,315 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 56,607 7 *
Water Detector With Sump/Bilge Pump Controller 41,406 16 *
Wire Loop Alarm Alex Meaden 73,934 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 5,732 2 *
12VDC To 120VAC Inverter 568,288 640
6V to 12V Converter 161,287 106
Automatic 12V Lead Acid Battery Charger 217,433 177
Automatic Load Sensing Power Switch 47,888 12 *
Car Battery Charger 370,609 141 *
Dual Polarity Power Supply 117,412 74 *
Fixed Voltage Power Supply 110,438 42 *
High Current Power Supply 120,339 58 *
High Voltage High Current Power Supply 97,464 25 *
LASER Power Supply 99,705 27
Portable CD Player Adapter For Car 78,009 11 *
Power Supply 312,482 249 *
Solid State Tesla Coil NEW! 3,262 0
Solid State Tesla Coil/High Voltage Generator 144,014 42
Transformerless Power Supply 164,674 107 *
Voltage Inverter 130,345 47 *
Voltage Inverter II 75,637 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 209,172 167
3 Watt FM Transmitter Rae XL Tkacik 109,533 68 *
50 Watt Amplifier 202,363 70
8 Note Tune Player 48,466 10 *
8 Watt Audio Amp 135,274 57 *
Aircraft Radio Communications Receiver 76,458 40 *
Crystal Radio 55,781 50 *
Digital Volume Control 129,706 40 *
Electronic Stethoscope 91,723 131 *
FET Audio Mixer 105,413 30
FM Transmitter 416,724 362
Guitar Fuzz Effect 73,197 45 *
Microphone Mixer Anatoly I. Shikhatov 82,756 20 *
Mono To Stereo Synthesizer oRbEq 35,780 14 *
One Tube Regenerative Radio NEW! 2,509 1 *
Op Amp Radio 125,086 66 *
Single Chip AM Radio NEW! 2,251 0 *
Single Chip FM Radio NEW! 3,804 0 *
Sound Level Meter 128,603 41 *
Stereo Tube Amplifier Weslee Kinsler 91,901 12 *
Tone Control 103,421 20
Transistor Organ 64,231 23

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 59,701 26 *
FM Telephone Bug 94,465 49
Phone Busy Indicator 58,782 19 *
Remote Telephone Ringer 38,092 2 *
Ringing Phone Light Flasher 70,610 24 *
Simple Phone Tap Derek Tombrello 169,507 92 *
Telephone Hold Button 35,561 7
Telephone Recorder 88,296 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.