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, March 17, 2010		 12VDC To 120VAC Inverter513
7 Segment LED Counter407
Yesterday
Tuesday, March 16, 2010		 12VDC To 120VAC Inverter739
7 Segment LED Counter537
Of All Time 12VDC To 120VAC Inverter637,329
FM Transmitter463,222

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 95,076 51 *
Car Alarm Arming Horn Beep Canceller bob 43,807 6 *
Wireless Auto Tachometer 150,229 52

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 63,940 29 *
Parallel (Printer) Port Interface 129,781 69

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 185,052 55 *
3 Channel Spectrum Analyzer 61,334 11
40W Fluorescent Lamp Inverter Bart Milnes 136,143 57 *
Adjustable Strobe Light 116,204 26
Black Light 111,741 27
Colour (Sound) Organ 122,908 28
Electronic Dice NEW! 24,153 2 *
Fantastic Atom Expander 71,699 22
Flash Slave Trigger 92,355 15 *
Infa-Red Remote Control 271,340 206 *
IR Remote Extender NEW! 8,625 0 *
IR Remote Jammer Carl 102,934 98 *
IR Remote Switch NEW! 11,273 4 *
LASER Transmitter/Receiver 162,048 84
LED Chaser 167,640 78 *
LED Metronome NEW! 8,610 0 *
LED Thermometer 81,004 18 *
Light/Dark Detector 122,934 84 *
Simple Colour Organ 51,824 10 *
Strobe Light 131,285 26 *
TRIAC Light Dimmer 201,013 50

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 169,327 119 *
Electromagnetic Levitator NEW! 13,964 2 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 358,519 195 *
AC Motor Speed Controller 84,255 19 *
Air Flow Detector 93,692 49 *
Digital Keypad Combination Lock 55,629 18
Low Voltage Alarm 79,485 50 *
Pine Racecar Victory Judge 30,527 0 *
Pulse Width Modulation DC Motor Control 292,072 87
Rain Detector 125,229 102 *
Simple Lie Detector 245,816 293
Simple Polarity Tester Dudley LeRoux 49,922 11 *
Simple Servo Controller 46,925 10 *
Simple Touch Switch NEW! 13,514 0 *
Simple Two Speed Contactor DC Motor Controller 85,959 20 *
Stepper Motor Controller 324,209 107 *
Time Delay Relay 196,860 65
Time Delay Relay II jawaharlal@excite.com 92,972 34 *
Touch Switch 133,602 47 *
Video Activated Relay 36,942 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 63,085 7 *
Water Detector With Sump/Bilge Pump Controller 47,242 16 *
Wire Loop Alarm Alex Meaden 82,425 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 18,223 7 *
12VDC To 120VAC Inverter 637,329 647
6V to 12V Converter 182,575 107
Automatic 12V Lead Acid Battery Charger 254,140 182
Automatic Load Sensing Power Switch 53,792 12 *
Car Battery Charger 422,832 146 *
Dual Polarity Power Supply 132,294 75 *
Fixed Voltage Power Supply 123,821 43 *
High Current Power Supply 134,644 58 *
High Voltage High Current Power Supply 108,550 28 *
LASER Power Supply 111,726 27
Portable CD Player Adapter For Car 86,472 11 *
Power Supply 348,092 250 *
Solid State Tesla Coil NEW! 10,380 0
Solid State Tesla Coil/High Voltage Generator 161,266 43
Transformerless Power Supply 185,544 108 *
Voltage Inverter 145,085 48 *
Voltage Inverter II 83,763 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 232,417 170
3 Watt FM Transmitter Rae XL Tkacik 124,636 68 *
50 Watt Amplifier 225,797 71
8 Note Tune Player 53,425 10 *
8 Watt Audio Amp 150,059 57 *
Aircraft Radio Communications Receiver 88,469 40 *
Crystal Radio 62,146 50 *
Digital Volume Control 145,200 40 *
Electronic Stethoscope 102,091 132 *
FET Audio Mixer 118,088 30
FM Transmitter 463,222 366
Guitar Fuzz Effect 82,615 45 *
Microphone Mixer Anatoly I. Shikhatov 93,473 20 *
Mono To Stereo Synthesizer oRbEq 39,023 14 *
One Tube Regenerative Radio NEW! 7,879 1 *
Op Amp Radio 139,681 69 *
Single Chip AM Radio NEW! 6,676 0 *
Single Chip FM Radio NEW! 11,733 0 *
Sound Level Meter 142,203 42 *
Stereo Tube Amplifier Weslee Kinsler 101,326 13 *
Tone Control 117,025 21
Transistor Organ 72,059 23

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 65,778 26 *
FM Telephone Bug 103,777 49
Phone Busy Indicator 64,208 19 *
Remote Telephone Ringer 42,306 2 *
Ringing Phone Light Flasher 78,331 24 *
Simple Phone Tap Derek Tombrello 185,877 92 *
Telephone Hold Button 38,674 7
Telephone Recorder 96,414 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.