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, October 26, 2014
7 Segment LED Counter28
LED Chaser10
Yesterday
Saturday, October 25, 2014
7 Segment LED Counter589
Infa-Red Remote Control226
Of All Time 12VDC To 120VAC Inverter1,248,986
FM Transmitter839,784

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 166,503 60 *
Car Alarm Arming Horn Beep Canceller bob 84,494 6 *
Wireless Auto Tachometer 255,337 57

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 109,972 29 *
Parallel (Printer) Port Interface 211,379 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 350,683 61 *
3 Channel Spectrum Analyzer 148,979 19
40W Fluorescent Lamp Inverter Bart Milnes 256,886 60 *
Adjustable Strobe Light 226,547 36
Black Light 192,504 29
Colour (Sound) Organ 214,994 34
Electronic Dice NEW! 121,432 8 *
Fantastic Atom Expander 132,406 24
Flash Slave Trigger 157,053 17 *
Infa-Red Remote Control 511,153 216 *
IR Remote Extender NEW! 66,065 2 *
IR Remote Jammer Carl 193,772 110 *
IR Remote Switch NEW! 95,019 9 *
LASER Transmitter/Receiver 319,588 91
LED Chaser 353,749 83 *
LED Metronome NEW! 61,123 3 *
LED Thermometer 150,804 22 *
Light/Dark Detector 233,453 89 *
Simple Colour Organ 91,093 10 *
Strobe Light 211,982 27 *
TRIAC Light Dimmer 397,550 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 278,676 122 *
Electromagnetic Levitator NEW! 85,355 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 731,496 214 *
AC Motor Speed Controller 280,291 28 *
Air Flow Detector 185,293 54 *
Digital Keypad Combination Lock 133,946 20
Low Voltage Alarm 161,475 58 *
Pine Racecar Victory Judge 59,668 1 *
Pulse Width Modulation DC Motor Control 551,327 93
Rain Detector 233,496 111 *
Simple Lie Detector 460,107 320
Simple Polarity Tester Dudley LeRoux 101,210 13 *
Simple Servo Controller 152,365 22 *
Simple Touch Switch NEW! 108,329 5 *
Simple Two Speed Contactor DC Motor Controller 149,108 21 *
Stepper Motor Controller 601,717 120 *
Time Delay Relay 445,459 86
Time Delay Relay II jawaharlal@excite.com 176,150 39 *
Touch Switch 225,406 51 *
Video Activated Relay 72,752 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 121,089 9 *
Water Detector With Sump/Bilge Pump Controller 99,349 18 *
Wire Loop Alarm Alex Meaden 152,472 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 207,395 24 *
12VDC To 120VAC Inverter 1,248,986 684
6V to 12V Converter 380,574 121
Automatic 12V Lead Acid Battery Charger 733,339 238
Automatic Load Sensing Power Switch 108,124 14 *
Car Battery Charger 743,441 158 *
Dual Polarity Power Supply 260,094 84 *
Fixed Voltage Power Supply 242,293 52 *
High Current Power Supply 251,394 64 *
High Voltage High Current Power Supply 192,059 34 *
LASER Power Supply 214,111 28
Portable CD Player Adapter For Car 150,360 12 *
Power Supply 612,584 258 *
Solid State Tesla Coil NEW! 87,934 2
Solid State Tesla Coil/High Voltage Generator 325,227 49
Transformerless Power Supply 370,084 116 *
Voltage Inverter 264,754 51 *
Voltage Inverter II 149,957 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 487,356 182
3 Watt FM Transmitter Rae XL Tkacik 253,587 80 *
50 Watt Amplifier 399,689 73
8 Note Tune Player 94,044 12 *
8 Watt Audio Amp 278,864 65 *
Aircraft Radio Communications Receiver 189,278 49 *
Crystal Radio 112,556 53 *
Digital Volume Control 261,504 46 *
Electronic Stethoscope 209,001 138 *
FET Audio Mixer 260,564 40
FM Transmitter 839,784 418
Guitar Fuzz Effect 170,135 51 *
Microphone Mixer Anatoly I. Shikhatov 180,081 25 *
Mono To Stereo Synthesizer oRbEq 73,847 16 *
One Tube Regenerative Radio NEW! 72,458 4 *
Op Amp Radio 288,714 80 *
Single Chip AM Radio NEW! 49,908 2 *
Single Chip FM Radio NEW! 90,158 0 *
Sound Level Meter 265,760 50 *
Stereo Tube Amplifier Weslee Kinsler 199,490 15 *
Tone Control 228,963 29
Transistor Organ 134,099 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 119,337 27 *
FM Telephone Bug 177,441 57
Phone Busy Indicator 137,493 24 *
Remote Telephone Ringer 76,837 3 *
Ringing Phone Light Flasher 151,525 32 *
Simple Phone Tap Derek Tombrello 300,707 98 *
Telephone Hold Button 75,540 9
Telephone Recorder 159,228 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.