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
Monday, September 01, 2014
22 Watt Audio Amplifier201
FET Audio Mixer179
Yesterday
Sunday, August 31, 2014
22 Watt Audio Amplifier319
FET Audio Mixer279
Of All Time 12VDC To 120VAC Inverter1,237,819
FM Transmitter833,077

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 164,848 60 *
Car Alarm Arming Horn Beep Canceller bob 83,742 6 *
Wireless Auto Tachometer 253,192 57

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 108,991 29 *
Parallel (Printer) Port Interface 210,034 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 348,056 61 *
3 Channel Spectrum Analyzer 147,206 19
40W Fluorescent Lamp Inverter Bart Milnes 254,992 60 *
Adjustable Strobe Light 224,615 36
Black Light 191,142 29
Colour (Sound) Organ 213,589 34
Electronic Dice NEW! 120,008 8 *
Fantastic Atom Expander 131,219 24
Flash Slave Trigger 155,974 17 *
Infa-Red Remote Control 501,120 216 *
IR Remote Extender NEW! 64,903 2 *
IR Remote Jammer Carl 192,093 110 *
IR Remote Switch NEW! 93,612 9 *
LASER Transmitter/Receiver 316,855 91
LED Chaser 344,362 83 *
LED Metronome NEW! 60,210 3 *
LED Thermometer 149,451 22 *
Light/Dark Detector 231,812 89 *
Simple Colour Organ 90,320 10 *
Strobe Light 209,771 27 *
TRIAC Light Dimmer 393,409 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 277,293 122 *
Electromagnetic Levitator NEW! 84,162 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 722,121 214 *
AC Motor Speed Controller 276,882 28 *
Air Flow Detector 182,844 54 *
Digital Keypad Combination Lock 132,568 20
Low Voltage Alarm 159,875 58 *
Pine Racecar Victory Judge 59,054 1 *
Pulse Width Modulation DC Motor Control 544,149 93
Rain Detector 231,711 111 *
Simple Lie Detector 455,832 320
Simple Polarity Tester Dudley LeRoux 100,062 13 *
Simple Servo Controller 149,846 22 *
Simple Touch Switch NEW! 106,443 5 *
Simple Two Speed Contactor DC Motor Controller 147,648 21 *
Stepper Motor Controller 596,488 120 *
Time Delay Relay 440,300 86
Time Delay Relay II jawaharlal@excite.com 174,672 39 *
Touch Switch 223,861 51 *
Video Activated Relay 71,659 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 119,819 9 *
Water Detector With Sump/Bilge Pump Controller 98,422 18 *
Wire Loop Alarm Alex Meaden 151,228 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 202,899 24 *
12VDC To 120VAC Inverter 1,237,819 684
6V to 12V Converter 376,848 121
Automatic 12V Lead Acid Battery Charger 723,530 238
Automatic Load Sensing Power Switch 107,044 14 *
Car Battery Charger 739,175 158 *
Dual Polarity Power Supply 257,862 84 *
Fixed Voltage Power Supply 240,054 52 *
High Current Power Supply 248,963 64 *
High Voltage High Current Power Supply 190,588 34 *
LASER Power Supply 212,037 28
Portable CD Player Adapter For Car 149,189 12 *
Power Supply 605,923 258 *
Solid State Tesla Coil NEW! 86,342 2
Solid State Tesla Coil/High Voltage Generator 321,041 49
Transformerless Power Supply 366,876 116 *
Voltage Inverter 262,593 51 *
Voltage Inverter II 148,366 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 479,920 182
3 Watt FM Transmitter Rae XL Tkacik 251,161 80 *
50 Watt Amplifier 396,738 73
8 Note Tune Player 93,179 12 *
8 Watt Audio Amp 276,024 64 *
Aircraft Radio Communications Receiver 186,909 49 *
Crystal Radio 111,502 53 *
Digital Volume Control 259,903 46 *
Electronic Stethoscope 206,814 138 *
FET Audio Mixer 255,196 40
FM Transmitter 833,077 418
Guitar Fuzz Effect 168,156 51 *
Microphone Mixer Anatoly I. Shikhatov 178,237 25 *
Mono To Stereo Synthesizer oRbEq 72,498 16 *
One Tube Regenerative Radio NEW! 70,791 4 *
Op Amp Radio 283,144 80 *
Single Chip AM Radio NEW! 48,910 2 *
Single Chip FM Radio NEW! 88,057 0 *
Sound Level Meter 263,946 50 *
Stereo Tube Amplifier Weslee Kinsler 196,188 15 *
Tone Control 227,074 29
Transistor Organ 132,822 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 118,511 27 *
FM Telephone Bug 175,758 57
Phone Busy Indicator 135,223 24 *
Remote Telephone Ringer 76,160 3 *
Ringing Phone Light Flasher 150,033 32 *
Simple Phone Tap Derek Tombrello 298,664 98 *
Telephone Hold Button 74,568 9
Telephone Recorder 158,197 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.