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
Sunday, November 10, 2024
Mono To Stereo Synthesizer6
Simple Polarity Tester5
Yesterday
Saturday, November 09, 2024
12VDC To 120VAC Inverter53
FM Transmitter37
Of All Time 12VDC To 120VAC Inverter1,539,433
FM Transmitter1,015,721

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 229,279 61 *
Car Alarm Arming Horn Beep Canceller bob 138,754 6 *
Wireless Auto Tachometer 345,801 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 162,015 29 *
Parallel (Printer) Port Interface 289,940 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 450,906 63 *
3 Channel Spectrum Analyzer 224,997 20
40W Fluorescent Lamp Inverter Bart Milnes 332,623 60 *
Adjustable Strobe Light 312,254 36
Black Light 284,814 29
Colour (Sound) Organ 293,830 36
Electronic Dice NEW! 191,687 10 *
Fantastic Atom Expander 205,299 25
Flash Slave Trigger 224,152 18 *
Infa-Red Remote Control 640,616 216 *
IR Remote Extender NEW! 135,356 3 *
IR Remote Jammer Carl 269,346 110 *
IR Remote Switch NEW! 159,906 9 *
LASER Transmitter/Receiver 420,650 92
LED Chaser 449,575 83 *
LED Metronome NEW! 101,903 3 *
LED Thermometer 209,301 22 *
Light/Dark Detector 308,459 90 *
Simple Colour Organ 139,674 11 *
Strobe Light 278,271 27 *
TRIAC Light Dimmer 556,754 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 363,460 122 *
Electromagnetic Levitator NEW! 146,797 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 926,590 214 *
AC Motor Speed Controller 395,838 29 *
Air Flow Detector 254,441 54 *
Digital Keypad Combination Lock 204,550 20
Low Voltage Alarm 231,897 58 *
Pine Racecar Victory Judge 104,912 1 *
Pulse Width Modulation DC Motor Control 658,626 94
Rain Detector 307,650 112 *
Simple Lie Detector 568,190 323
Simple Polarity Tester Dudley LeRoux 168,055 13 *
Simple Servo Controller 224,357 22 *
Simple Touch Switch NEW! 172,543 6 *
Simple Two Speed Contactor DC Motor Controller 207,946 21 *
Stepper Motor Controller 752,288 120 *
Time Delay Relay 559,028 88
Time Delay Relay II jawaharlal@excite.com 250,266 39 *
Touch Switch 292,683 51 *
Video Activated Relay 124,258 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 184,444 10 *
Water Detector With Sump/Bilge Pump Controller 155,612 18 *
Wire Loop Alarm Alex Meaden 208,155 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 320,580 25 *
12VDC To 120VAC Inverter 1,539,433 691
6V to 12V Converter 531,741 121
Automatic 12V Lead Acid Battery Charger 941,377 248
Automatic Load Sensing Power Switch 170,319 16 *
Car Battery Charger 887,084 159 *
Dual Polarity Power Supply 374,619 84 *
Fixed Voltage Power Supply 314,624 52 *
High Current Power Supply 343,516 66 *
High Voltage High Current Power Supply 267,205 35 *
LASER Power Supply 299,635 28
Portable CD Player Adapter For Car 214,978 12 *
Power Supply 743,147 259 *
Solid State Tesla Coil NEW! 149,800 4
Solid State Tesla Coil/High Voltage Generator 448,747 51
Transformerless Power Supply 466,803 117 *
Voltage Inverter 343,891 51 *
Voltage Inverter II 206,529 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 588,865 182
3 Watt FM Transmitter Rae XL Tkacik 339,839 83 *
50 Watt Amplifier 512,042 74
8 Note Tune Player 143,405 12 *
8 Watt Audio Amp 377,644 67 *
Aircraft Radio Communications Receiver 282,850 49 *
Crystal Radio 162,067 53 *
Digital Volume Control 342,121 47 *
Electronic Stethoscope 325,206 142 *
FET Audio Mixer 346,971 41
FM Transmitter 1,015,721 420
Guitar Fuzz Effect 251,096 54 *
Microphone Mixer Anatoly I. Shikhatov 253,870 26 *
Mono To Stereo Synthesizer oRbEq 137,228 18 *
One Tube Regenerative Radio NEW! 147,910 4 *
Op Amp Radio 393,742 80 *
Single Chip AM Radio NEW! 102,694 3 *
Single Chip FM Radio NEW! 175,997 1 *
Sound Level Meter 345,312 51 *
Stereo Tube Amplifier Weslee Kinsler 271,563 15 *
Tone Control 313,209 31
Transistor Organ 203,141 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 166,104 27 *
FM Telephone Bug 237,660 57
Phone Busy Indicator 216,460 24 *
Remote Telephone Ringer 120,651 3 *
Ringing Phone Light Flasher 221,910 35 *
Simple Phone Tap Derek Tombrello 386,375 98 *
Telephone Hold Button 131,552 10
Telephone Recorder 219,313 55 *


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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.