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, September 15, 2019
6V to 12V Converter59
AC Motor Speed Controller52
Yesterday
Saturday, September 14, 2019
12VDC To 120VAC Inverter48
7 Segment LED Counter46
Of All Time 12VDC To 120VAC Inverter1,447,615
FM Transmitter956,466

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 200,616 61 *
Car Alarm Arming Horn Beep Canceller bob 111,772 6 *
Wireless Auto Tachometer 311,456 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 139,976 29 *
Parallel (Printer) Port Interface 251,609 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 407,744 63 *
3 Channel Spectrum Analyzer 195,808 20
40W Fluorescent Lamp Inverter Bart Milnes 301,210 60 *
Adjustable Strobe Light 276,642 36
Black Light 239,532 29
Colour (Sound) Organ 259,270 36
Electronic Dice NEW! 161,607 10 *
Fantastic Atom Expander 173,741 25
Flash Slave Trigger 192,367 18 *
Infa-Red Remote Control 598,315 216 *
IR Remote Extender NEW! 102,504 2 *
IR Remote Jammer Carl 235,373 110 *
IR Remote Switch NEW! 132,138 9 *
LASER Transmitter/Receiver 377,191 92
LED Chaser 418,290 83 *
LED Metronome NEW! 85,859 3 *
LED Thermometer 185,062 22 *
Light/Dark Detector 283,039 90 *
Simple Colour Organ 118,603 10 *
Strobe Light 251,829 27 *
TRIAC Light Dimmer 468,699 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 325,456 122 *
Electromagnetic Levitator NEW! 122,310 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 880,322 214 *
AC Motor Speed Controller 355,620 29 *
Air Flow Detector 229,331 54 *
Digital Keypad Combination Lock 174,427 20
Low Voltage Alarm 203,447 58 *
Pine Racecar Victory Judge 84,166 1 *
Pulse Width Modulation DC Motor Control 621,033 93
Rain Detector 282,708 112 *
Simple Lie Detector 532,841 323
Simple Polarity Tester Dudley LeRoux 138,773 13 *
Simple Servo Controller 197,306 22 *
Simple Touch Switch NEW! 148,162 5 *
Simple Two Speed Contactor DC Motor Controller 182,806 21 *
Stepper Motor Controller 707,375 120 *
Time Delay Relay 526,610 88
Time Delay Relay II jawaharlal@excite.com 216,871 39 *
Touch Switch 265,787 51 *
Video Activated Relay 102,256 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 156,507 10 *
Water Detector With Sump/Bilge Pump Controller 127,930 18 *
Wire Loop Alarm Alex Meaden 184,969 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 284,274 25 *
12VDC To 120VAC Inverter 1,447,615 688
6V to 12V Converter 470,764 121
Automatic 12V Lead Acid Battery Charger 893,105 246
Automatic Load Sensing Power Switch 142,093 16 *
Car Battery Charger 845,375 159 *
Dual Polarity Power Supply 348,756 84 *
Fixed Voltage Power Supply 286,115 52 *
High Current Power Supply 307,228 65 *
High Voltage High Current Power Supply 229,443 35 *
LASER Power Supply 267,513 28
Portable CD Player Adapter For Car 187,801 12 *
Power Supply 704,244 259 *
Solid State Tesla Coil NEW! 125,671 4
Solid State Tesla Coil/High Voltage Generator 405,711 50
Transformerless Power Supply 434,668 117 *
Voltage Inverter 311,511 51 *
Voltage Inverter II 179,504 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 556,880 182
3 Watt FM Transmitter Rae XL Tkacik 305,685 82 *
50 Watt Amplifier 477,497 74
8 Note Tune Player 121,393 12 *
8 Watt Audio Amp 341,989 67 *
Aircraft Radio Communications Receiver 245,560 49 *
Crystal Radio 143,609 53 *
Digital Volume Control 306,642 47 *
Electronic Stethoscope 284,225 141 *
FET Audio Mixer 315,284 41
FM Transmitter 956,466 419
Guitar Fuzz Effect 218,657 52 *
Microphone Mixer Anatoly I. Shikhatov 225,261 26 *
Mono To Stereo Synthesizer oRbEq 108,593 18 *
One Tube Regenerative Radio NEW! 114,029 4 *
Op Amp Radio 355,452 80 *
Single Chip AM Radio NEW! 85,039 2 *
Single Chip FM Radio NEW! 145,378 1 *
Sound Level Meter 316,083 51 *
Stereo Tube Amplifier Weslee Kinsler 243,285 15 *
Tone Control 280,351 31
Transistor Organ 172,906 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 143,529 27 *
FM Telephone Bug 214,791 57
Phone Busy Indicator 193,602 24 *
Remote Telephone Ringer 98,990 3 *
Ringing Phone Light Flasher 190,240 34 *
Simple Phone Tap Derek Tombrello 342,083 98 *
Telephone Hold Button 107,933 10
Telephone Recorder 191,370 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.