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
Thursday, January 23, 2020
12VDC To 120VAC Inverter50
Adjustable Strobe Light18
Yesterday
Wednesday, January 22, 2020
Colour (Sound) Organ72
7 Segment LED Counter72
Of All Time 12VDC To 120VAC Inverter1,456,166
FM Transmitter962,134

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 203,923 61 *
Car Alarm Arming Horn Beep Canceller bob 115,009 6 *
Wireless Auto Tachometer 316,206 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 142,536 29 *
Parallel (Printer) Port Interface 256,113 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 413,337 63 *
3 Channel Spectrum Analyzer 198,802 20
40W Fluorescent Lamp Inverter Bart Milnes 305,686 60 *
Adjustable Strobe Light 280,534 36
Black Light 244,303 29
Colour (Sound) Organ 263,171 36
Electronic Dice NEW! 165,229 10 *
Fantastic Atom Expander 177,541 25
Flash Slave Trigger 195,626 18 *
Infa-Red Remote Control 603,126 216 *
IR Remote Extender NEW! 106,631 2 *
IR Remote Jammer Carl 238,834 110 *
IR Remote Switch NEW! 135,704 9 *
LASER Transmitter/Receiver 381,511 92
LED Chaser 421,482 83 *
LED Metronome NEW! 87,344 3 *
LED Thermometer 187,902 22 *
Light/Dark Detector 285,967 90 *
Simple Colour Organ 120,742 10 *
Strobe Light 254,465 27 *
TRIAC Light Dimmer 475,495 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 329,512 122 *
Electromagnetic Levitator NEW! 124,936 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 886,427 214 *
AC Motor Speed Controller 360,089 29 *
Air Flow Detector 231,898 54 *
Digital Keypad Combination Lock 177,615 20
Low Voltage Alarm 206,266 58 *
Pine Racecar Victory Judge 86,730 1 *
Pulse Width Modulation DC Motor Control 624,392 94
Rain Detector 285,228 112 *
Simple Lie Detector 536,815 323
Simple Polarity Tester Dudley LeRoux 142,121 13 *
Simple Servo Controller 200,450 22 *
Simple Touch Switch NEW! 150,486 5 *
Simple Two Speed Contactor DC Motor Controller 185,617 21 *
Stepper Motor Controller 712,009 120 *
Time Delay Relay 531,135 88
Time Delay Relay II jawaharlal@excite.com 220,350 39 *
Touch Switch 268,709 51 *
Video Activated Relay 104,438 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 159,411 10 *
Water Detector With Sump/Bilge Pump Controller 130,477 18 *
Wire Loop Alarm Alex Meaden 187,375 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 288,549 25 *
12VDC To 120VAC Inverter 1,456,166 689
6V to 12V Converter 483,109 121
Automatic 12V Lead Acid Battery Charger 899,735 247
Automatic Load Sensing Power Switch 145,104 16 *
Car Battery Charger 851,057 159 *
Dual Polarity Power Supply 351,769 84 *
Fixed Voltage Power Supply 288,905 52 *
High Current Power Supply 311,100 65 *
High Voltage High Current Power Supply 232,101 35 *
LASER Power Supply 271,412 28
Portable CD Player Adapter For Car 190,513 12 *
Power Supply 709,163 259 *
Solid State Tesla Coil NEW! 127,944 4
Solid State Tesla Coil/High Voltage Generator 410,465 50
Transformerless Power Supply 438,363 117 *
Voltage Inverter 313,911 51 *
Voltage Inverter II 181,906 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 560,221 182
3 Watt FM Transmitter Rae XL Tkacik 308,789 82 *
50 Watt Amplifier 481,238 74
8 Note Tune Player 123,525 12 *
8 Watt Audio Amp 345,769 67 *
Aircraft Radio Communications Receiver 252,163 49 *
Crystal Radio 145,608 53 *
Digital Volume Control 310,054 47 *
Electronic Stethoscope 287,886 141 *
FET Audio Mixer 318,460 41
FM Transmitter 962,134 419
Guitar Fuzz Effect 222,141 52 *
Microphone Mixer Anatoly I. Shikhatov 228,900 26 *
Mono To Stereo Synthesizer oRbEq 111,882 18 *
One Tube Regenerative Radio NEW! 116,841 4 *
Op Amp Radio 358,670 80 *
Single Chip AM Radio NEW! 86,655 2 *
Single Chip FM Radio NEW! 149,027 1 *
Sound Level Meter 319,369 51 *
Stereo Tube Amplifier Weslee Kinsler 246,614 15 *
Tone Control 284,071 31
Transistor Organ 176,252 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 145,832 27 *
FM Telephone Bug 217,604 57
Phone Busy Indicator 196,451 24 *
Remote Telephone Ringer 101,003 3 *
Ringing Phone Light Flasher 193,466 35 *
Simple Phone Tap Derek Tombrello 345,479 98 *
Telephone Hold Button 110,821 10
Telephone Recorder 195,544 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.