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 17
Major Projects 1
Other 20
Power Supply 16
Sound/Radio 19
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
Sunday, May 11, 2008		 12VDC To 120VAC Inverter437
FM Transmitter321
Yesterday
Saturday, May 10, 2008		 12VDC To 120VAC Inverter495
FM Transmitter406
Of All Time 12VDC To 120VAC Inverter245,088
FM Transmitter206,702

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 47,319 42 *
Car Alarm Arming Horn Beep Canceller NEW! bob 11,418 2 *
Wireless Auto Tachometer 65,411 41

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 29,962 25 *
Parallel (Printer) Port Interface 57,626 58

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 72,219 41 *
3 Channel Spectrum Analyzer 24,225 10
40W Fluorescent Lamp Inverter Bart Milnes 52,329 38 *
Adjustable Strobe Light 51,046 17
Black Light 50,280 24
Colour (Sound) Organ 53,083 20
Fantastic Atom Expander 30,615 16
Flash Slave Trigger 38,769 11 *
Infa-Red Remote Control 116,896 172 *
IR Remote Jammer Carl 42,845 79 *
LASER Transmitter/Receiver 63,848 67
LED Chaser 65,291 53 *
LED Thermometer NEW! 21,198 6 *
Light/Dark Detector 50,075 70 *
Simple Colour Organ 17,344 5 *
Strobe Light 60,725 17 *
TRIAC Light Dimmer 81,212 43

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 77,247 109 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 125,627 146 *
AC Motor Speed Controller NEW! 14,184 6 *
Air Flow Detector 39,050 39 *
Digital Keypad Combination Lock NEW! 11,874 8
Low Voltage Alarm 30,911 41 *
Pine Racecar Victory Judge 12,780 0 *
Pulse Width Modulation DC Motor Control 109,672 68
Rain Detector 49,405 77 *
Simple Lie Detector 97,516 234
Simple Polarity Tester Dudley LeRoux 20,294 11 *
Simple Servo Controller NEW! 9,620 1 *
Simple Two Speed Contactor DC Motor Controller 35,931 16 *
Stepper Motor Controller 125,579 76 *
Time Delay Relay 68,605 37
Time Delay Relay II jawaharlal@excite.com 35,592 24 *
Touch Switch 52,486 35 *
Video Activated Relay 15,973 6 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 27,178 4 *
Water Detector With Sump/Bilge Pump Controller NEW! 10,435 8 *
Wire Loop Alarm Alex Meaden 34,108 22 *

Power Supply

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Circuit Author Views Rank Comments Marker
12VDC To 120VAC Inverter 245,088 538
6V to 12V Converter 67,659 80
Automatic 12V Lead Acid Battery Charger 80,854 114
Automatic Load Sensing Power Switch NEW! 13,156 6 *
Car Battery Charger 163,447 97 *
Dual Polarity Power Supply 48,681 60 *
Fixed Voltage Power Supply 42,435 36 *
High Current Power Supply 55,574 47 *
High Voltage High Current Power Supply 44,103 15 *
LASER Power Supply 45,177 22
Portable CD Player Adapter For Car 36,080 8 *
Power Supply 143,087 220 *
Solid State Tesla Coil/High Voltage Generator 63,068 29
Transformerless Power Supply 73,438 85 *
Voltage Inverter 62,127 41 *
Voltage Inverter II 35,200 13 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 93,343 122
3 Watt FM Transmitter Rae XL Tkacik 48,083 58 *
50 Watt Amplifier 95,271 62
8 Note Tune Player 22,609 8 *
8 Watt Audio Amp 62,517 51 *
Aircraft Radio Communications Receiver NEW! 18,635 19 *
Crystal Radio 25,609 39 *
Digital Volume Control 58,810 33 *
Electronic Stethoscope 42,747 114 *
FET Audio Mixer 47,349 17
FM Transmitter 206,702 309
Guitar Fuzz Effect 32,499 25 *
Microphone Mixer Anatoly I. Shikhatov 36,573 17 *
Mono To Stereo Synthesizer oRbEq 18,117 12 *
Op Amp Radio 59,099 45 *
Sound Level Meter 59,725 27 *
Stereo Tube Amplifier Weslee Kinsler 41,127 8 *
Tone Control 45,700 8
Transistor Organ 27,628 14

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 27,687 20 *
FM Telephone Bug 45,777 37
Phone Busy Indicator 32,195 10 *
Remote Telephone Ringer NEW! 10,493 0 *
Ringing Phone Light Flasher 33,168 17 *
Simple Phone Tap Derek Tombrello 76,521 62 *
Telephone Hold Button 16,760 6
Telephone Recorder 46,168 48 *

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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.