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
Friday, September 20, 2019
12VDC To 120VAC Inverter9
8 Watt Audio Amp6
Yesterday
Thursday, September 19, 2019
Automatic 12V Lead Acid Battery Charger71
12VDC To 120VAC Inverter70
Of All Time 12VDC To 120VAC Inverter1,447,922
FM Transmitter956,648

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 200,673 61 *
Car Alarm Arming Horn Beep Canceller bob 111,829 6 *
Wireless Auto Tachometer 311,601 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 140,037 29 *
Parallel (Printer) Port Interface 251,749 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 407,856 63 *
3 Channel Spectrum Analyzer 195,883 20
40W Fluorescent Lamp Inverter Bart Milnes 301,307 60 *
Adjustable Strobe Light 276,735 36
Black Light 239,664 29
Colour (Sound) Organ 259,339 36
Electronic Dice NEW! 161,693 10 *
Fantastic Atom Expander 173,823 25
Flash Slave Trigger 192,442 18 *
Infa-Red Remote Control 598,432 216 *
IR Remote Extender NEW! 102,592 2 *
IR Remote Jammer Carl 235,437 110 *
IR Remote Switch NEW! 132,223 9 *
LASER Transmitter/Receiver 377,315 92
LED Chaser 418,388 83 *
LED Metronome NEW! 85,911 3 *
LED Thermometer 185,136 22 *
Light/Dark Detector 283,112 90 *
Simple Colour Organ 118,651 10 *
Strobe Light 251,905 27 *
TRIAC Light Dimmer 468,837 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 325,567 122 *
Electromagnetic Levitator NEW! 122,375 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 880,572 214 *
AC Motor Speed Controller 355,776 29 *
Air Flow Detector 229,388 54 *
Digital Keypad Combination Lock 174,526 20
Low Voltage Alarm 203,531 58 *
Pine Racecar Victory Judge 84,242 1 *
Pulse Width Modulation DC Motor Control 621,125 93
Rain Detector 282,790 112 *
Simple Lie Detector 532,969 323
Simple Polarity Tester Dudley LeRoux 138,852 13 *
Simple Servo Controller 197,409 22 *
Simple Touch Switch NEW! 148,210 5 *
Simple Two Speed Contactor DC Motor Controller 182,868 21 *
Stepper Motor Controller 707,506 120 *
Time Delay Relay 526,743 88
Time Delay Relay II jawaharlal@excite.com 216,953 39 *
Touch Switch 265,865 51 *
Video Activated Relay 102,310 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 156,590 10 *
Water Detector With Sump/Bilge Pump Controller 127,996 18 *
Wire Loop Alarm Alex Meaden 185,025 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 284,435 25 *
12VDC To 120VAC Inverter 1,447,922 688
6V to 12V Converter 471,002 121
Automatic 12V Lead Acid Battery Charger 893,346 246
Automatic Load Sensing Power Switch 142,188 16 *
Car Battery Charger 845,550 159 *
Dual Polarity Power Supply 348,831 84 *
Fixed Voltage Power Supply 286,187 52 *
High Current Power Supply 307,367 65 *
High Voltage High Current Power Supply 229,508 35 *
LASER Power Supply 267,632 28
Portable CD Player Adapter For Car 187,870 12 *
Power Supply 704,411 259 *
Solid State Tesla Coil NEW! 125,765 4
Solid State Tesla Coil/High Voltage Generator 405,868 50
Transformerless Power Supply 434,791 117 *
Voltage Inverter 311,587 51 *
Voltage Inverter II 179,555 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 556,972 182
3 Watt FM Transmitter Rae XL Tkacik 305,767 82 *
50 Watt Amplifier 477,590 74
8 Note Tune Player 121,438 12 *
8 Watt Audio Amp 342,119 67 *
Aircraft Radio Communications Receiver 245,673 49 *
Crystal Radio 143,700 53 *
Digital Volume Control 306,736 47 *
Electronic Stethoscope 284,324 141 *
FET Audio Mixer 315,351 41
FM Transmitter 956,648 419
Guitar Fuzz Effect 218,781 52 *
Microphone Mixer Anatoly I. Shikhatov 225,395 26 *
Mono To Stereo Synthesizer oRbEq 108,684 18 *
One Tube Regenerative Radio NEW! 114,167 4 *
Op Amp Radio 355,529 80 *
Single Chip AM Radio NEW! 85,090 2 *
Single Chip FM Radio NEW! 145,518 1 *
Sound Level Meter 316,182 51 *
Stereo Tube Amplifier Weslee Kinsler 243,388 15 *
Tone Control 280,491 31
Transistor Organ 172,999 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 143,595 27 *
FM Telephone Bug 214,894 57
Phone Busy Indicator 193,686 24 *
Remote Telephone Ringer 99,031 3 *
Ringing Phone Light Flasher 190,296 34 *
Simple Phone Tap Derek Tombrello 342,177 98 *
Telephone Hold Button 108,013 10
Telephone Recorder 191,440 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.