Electronic Circuits


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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
Saturday, August 30, 2014
22 Watt Audio Amplifier195
FET Audio Mixer164
Yesterday
Friday, August 29, 2014
22 Watt Audio Amplifier434
FET Audio Mixer392
Of All Time 12VDC To 120VAC Inverter1,237,476
FM Transmitter832,821

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 164,793 60 *
Car Alarm Arming Horn Beep Canceller bob 83,695 6 *
Wireless Auto Tachometer 253,127 57

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 108,954 29 *
Parallel (Printer) Port Interface 209,988 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 347,954 61 *
3 Channel Spectrum Analyzer 147,126 19
40W Fluorescent Lamp Inverter Bart Milnes 254,933 60 *
Adjustable Strobe Light 224,562 36
Black Light 191,105 29
Colour (Sound) Organ 213,540 34
Electronic Dice NEW! 119,967 8 *
Fantastic Atom Expander 131,179 24
Flash Slave Trigger 155,933 17 *
Infa-Red Remote Control 500,777 216 *
IR Remote Extender NEW! 64,859 2 *
IR Remote Jammer Carl 192,033 110 *
IR Remote Switch NEW! 93,557 9 *
LASER Transmitter/Receiver 316,766 91
LED Chaser 344,033 83 *
LED Metronome NEW! 60,189 3 *
LED Thermometer 149,414 22 *
Light/Dark Detector 231,760 89 *
Simple Colour Organ 90,286 10 *
Strobe Light 209,740 27 *
TRIAC Light Dimmer 393,318 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 277,243 122 *
Electromagnetic Levitator NEW! 84,121 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 721,968 214 *
AC Motor Speed Controller 276,752 28 *
Air Flow Detector 182,768 54 *
Digital Keypad Combination Lock 132,500 20
Low Voltage Alarm 159,822 58 *
Pine Racecar Victory Judge 59,031 1 *
Pulse Width Modulation DC Motor Control 543,906 93
Rain Detector 231,639 111 *
Simple Lie Detector 455,690 320
Simple Polarity Tester Dudley LeRoux 100,028 13 *
Simple Servo Controller 149,786 22 *
Simple Touch Switch NEW! 106,378 5 *
Simple Two Speed Contactor DC Motor Controller 147,599 21 *
Stepper Motor Controller 596,353 120 *
Time Delay Relay 440,116 86
Time Delay Relay II jawaharlal@excite.com 174,622 39 *
Touch Switch 223,823 51 *
Video Activated Relay 71,622 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 119,763 9 *
Water Detector With Sump/Bilge Pump Controller 98,373 18 *
Wire Loop Alarm Alex Meaden 151,196 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 202,744 24 *
12VDC To 120VAC Inverter 1,237,476 684
6V to 12V Converter 376,686 121
Automatic 12V Lead Acid Battery Charger 723,143 238
Automatic Load Sensing Power Switch 107,004 14 *
Car Battery Charger 738,991 158 *
Dual Polarity Power Supply 257,769 84 *
Fixed Voltage Power Supply 239,971 52 *
High Current Power Supply 248,870 64 *
High Voltage High Current Power Supply 190,531 34 *
LASER Power Supply 211,969 28
Portable CD Player Adapter For Car 149,148 12 *
Power Supply 605,636 258 *
Solid State Tesla Coil NEW! 86,287 2
Solid State Tesla Coil/High Voltage Generator 320,880 49
Transformerless Power Supply 366,762 116 *
Voltage Inverter 262,515 51 *
Voltage Inverter II 148,313 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 479,255 182
3 Watt FM Transmitter Rae XL Tkacik 251,065 80 *
50 Watt Amplifier 396,643 73
8 Note Tune Player 93,143 12 *
8 Watt Audio Amp 275,927 64 *
Aircraft Radio Communications Receiver 186,790 49 *
Crystal Radio 111,468 53 *
Digital Volume Control 259,849 46 *
Electronic Stethoscope 206,750 138 *
FET Audio Mixer 254,606 40
FM Transmitter 832,821 418
Guitar Fuzz Effect 168,099 51 *
Microphone Mixer Anatoly I. Shikhatov 178,168 25 *
Mono To Stereo Synthesizer oRbEq 72,445 16 *
One Tube Regenerative Radio NEW! 70,716 4 *
Op Amp Radio 282,808 80 *
Single Chip AM Radio NEW! 48,867 2 *
Single Chip FM Radio NEW! 87,963 0 *
Sound Level Meter 263,891 50 *
Stereo Tube Amplifier Weslee Kinsler 196,124 15 *
Tone Control 226,979 29
Transistor Organ 132,793 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 118,469 27 *
FM Telephone Bug 175,697 57
Phone Busy Indicator 135,153 24 *
Remote Telephone Ringer 76,134 3 *
Ringing Phone Light Flasher 149,971 32 *
Simple Phone Tap Derek Tombrello 298,601 98 *
Telephone Hold Button 74,531 9
Telephone Recorder 158,141 54 *


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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.