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, May 20, 2018
Dual Polarity Power Supply34
12VDC To 120VAC Inverter33
Yesterday
Saturday, May 19, 2018
Light/Dark Detector145
Stepper Motor Controller56
Of All Time 12VDC To 120VAC Inverter1,410,807
FM Transmitter933,866

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 189,267 61 *
Car Alarm Arming Horn Beep Canceller bob 101,163 6 *
Wireless Auto Tachometer 296,923 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 132,553 29 *
Parallel (Printer) Port Interface 235,680 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 392,379 63 *
3 Channel Spectrum Analyzer 184,930 20
40W Fluorescent Lamp Inverter Bart Milnes 289,708 60 *
Adjustable Strobe Light 262,702 36
Black Light 224,455 29
Colour (Sound) Organ 246,804 36
Electronic Dice NEW! 150,438 10 *
Fantastic Atom Expander 160,871 25
Flash Slave Trigger 181,321 18 *
Infa-Red Remote Control 580,430 216 *
IR Remote Extender NEW! 91,111 2 *
IR Remote Jammer Carl 224,418 110 *
IR Remote Switch NEW! 121,519 9 *
LASER Transmitter/Receiver 362,543 92
LED Chaser 405,876 83 *
LED Metronome NEW! 80,407 3 *
LED Thermometer 175,568 22 *
Light/Dark Detector 274,800 90 *
Simple Colour Organ 110,560 10 *
Strobe Light 242,375 27 *
TRIAC Light Dimmer 455,078 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 311,480 122 *
Electromagnetic Levitator NEW! 111,944 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 856,873 214 *
AC Motor Speed Controller 337,815 29 *
Air Flow Detector 219,058 54 *
Digital Keypad Combination Lock 162,672 20
Low Voltage Alarm 192,335 58 *
Pine Racecar Victory Judge 75,036 1 *
Pulse Width Modulation DC Motor Control 609,291 93
Rain Detector 271,300 112 *
Simple Lie Detector 516,432 323
Simple Polarity Tester Dudley LeRoux 127,626 13 *
Simple Servo Controller 184,097 22 *
Simple Touch Switch NEW! 138,227 5 *
Simple Two Speed Contactor DC Motor Controller 175,107 21 *
Stepper Motor Controller 678,777 120 *
Time Delay Relay 511,232 88
Time Delay Relay II jawaharlal@excite.com 203,835 39 *
Touch Switch 255,566 51 *
Video Activated Relay 93,343 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 145,532 10 *
Water Detector With Sump/Bilge Pump Controller 119,226 18 *
Wire Loop Alarm Alex Meaden 176,983 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 267,234 25 *
12VDC To 120VAC Inverter 1,410,807 688
6V to 12V Converter 448,913 121
Automatic 12V Lead Acid Battery Charger 871,518 246
Automatic Load Sensing Power Switch 132,720 16 *
Car Battery Charger 822,723 159 *
Dual Polarity Power Supply 316,875 84 *
Fixed Voltage Power Supply 276,843 52 *
High Current Power Supply 294,179 65 *
High Voltage High Current Power Supply 220,520 35 *
LASER Power Supply 251,746 28
Portable CD Player Adapter For Car 178,528 12 *
Power Supply 685,585 259 *
Solid State Tesla Coil NEW! 116,911 4
Solid State Tesla Coil/High Voltage Generator 385,998 50
Transformerless Power Supply 417,725 117 *
Voltage Inverter 302,949 51 *
Voltage Inverter II 172,197 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 544,294 182
3 Watt FM Transmitter Rae XL Tkacik 294,702 82 *
50 Watt Amplifier 460,511 74
8 Note Tune Player 114,625 12 *
8 Watt Audio Amp 327,107 67 *
Aircraft Radio Communications Receiver 231,228 49 *
Crystal Radio 135,334 53 *
Digital Volume Control 295,331 47 *
Electronic Stethoscope 272,294 141 *
FET Audio Mixer 302,939 41
FM Transmitter 933,866 419
Guitar Fuzz Effect 204,262 52 *
Microphone Mixer Anatoly I. Shikhatov 213,544 26 *
Mono To Stereo Synthesizer oRbEq 97,432 18 *
One Tube Regenerative Radio NEW! 103,267 4 *
Op Amp Radio 342,858 80 *
Single Chip AM Radio NEW! 79,291 2 *
Single Chip FM Radio NEW! 131,985 1 *
Sound Level Meter 303,102 51 *
Stereo Tube Amplifier Weslee Kinsler 231,386 15 *
Tone Control 267,058 31
Transistor Organ 162,058 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 136,242 27 *
FM Telephone Bug 201,368 57
Phone Busy Indicator 183,321 24 *
Remote Telephone Ringer 92,505 3 *
Ringing Phone Light Flasher 180,583 34 *
Simple Phone Tap Derek Tombrello 328,600 98 *
Telephone Hold Button 96,792 10
Telephone Recorder 181,687 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.