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, November 21, 2014
7 Segment LED Counter327
Electronic Stethoscope141
Yesterday
Thursday, November 20, 2014
7 Segment LED Counter566
Electronic Stethoscope262
Of All Time 12VDC To 120VAC Inverter1,254,335
FM Transmitter843,335

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 167,369 61 *
Car Alarm Arming Horn Beep Canceller bob 85,069 6 *
Wireless Auto Tachometer 259,242 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 110,668 29 *
Parallel (Printer) Port Interface 212,033 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 352,035 61 *
3 Channel Spectrum Analyzer 149,972 19
40W Fluorescent Lamp Inverter Bart Milnes 257,801 60 *
Adjustable Strobe Light 227,599 36
Black Light 193,364 29
Colour (Sound) Organ 215,925 34
Electronic Dice NEW! 122,418 8 *
Fantastic Atom Expander 133,275 24
Flash Slave Trigger 157,669 17 *
Infa-Red Remote Control 517,017 216 *
IR Remote Extender NEW! 66,697 2 *
IR Remote Jammer Carl 194,638 110 *
IR Remote Switch NEW! 95,787 9 *
LASER Transmitter/Receiver 321,109 91
LED Chaser 358,680 83 *
LED Metronome NEW! 61,607 3 *
LED Thermometer 151,522 22 *
Light/Dark Detector 234,301 89 *
Simple Colour Organ 91,593 10 *
Strobe Light 212,628 27 *
TRIAC Light Dimmer 399,864 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 279,481 122 *
Electromagnetic Levitator NEW! 86,125 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 745,698 214 *
AC Motor Speed Controller 282,989 29 *
Air Flow Detector 186,803 54 *
Digital Keypad Combination Lock 135,849 20
Low Voltage Alarm 162,224 58 *
Pine Racecar Victory Judge 60,005 1 *
Pulse Width Modulation DC Motor Control 553,507 93
Rain Detector 234,770 111 *
Simple Lie Detector 463,058 321
Simple Polarity Tester Dudley LeRoux 101,862 13 *
Simple Servo Controller 154,307 22 *
Simple Touch Switch NEW! 109,382 5 *
Simple Two Speed Contactor DC Motor Controller 150,410 21 *
Stepper Motor Controller 604,917 120 *
Time Delay Relay 448,383 86
Time Delay Relay II jawaharlal@excite.com 177,324 39 *
Touch Switch 226,805 51 *
Video Activated Relay 73,323 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 121,746 9 *
Water Detector With Sump/Bilge Pump Controller 100,245 18 *
Wire Loop Alarm Alex Meaden 153,074 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 209,494 24 *
12VDC To 120VAC Inverter 1,254,335 684
6V to 12V Converter 382,407 121
Automatic 12V Lead Acid Battery Charger 738,801 238
Automatic Load Sensing Power Switch 108,702 14 *
Car Battery Charger 745,991 158 *
Dual Polarity Power Supply 261,471 84 *
Fixed Voltage Power Supply 243,487 52 *
High Current Power Supply 252,592 64 *
High Voltage High Current Power Supply 192,839 34 *
LASER Power Supply 215,267 28
Portable CD Player Adapter For Car 151,021 12 *
Power Supply 615,794 258 *
Solid State Tesla Coil NEW! 88,743 2
Solid State Tesla Coil/High Voltage Generator 327,073 49
Transformerless Power Supply 371,788 116 *
Voltage Inverter 265,854 51 *
Voltage Inverter II 150,794 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 489,571 182
3 Watt FM Transmitter Rae XL Tkacik 254,790 80 *
50 Watt Amplifier 402,248 73
8 Note Tune Player 94,519 12 *
8 Watt Audio Amp 280,489 66 *
Aircraft Radio Communications Receiver 190,472 49 *
Crystal Radio 113,130 53 *
Digital Volume Control 262,389 46 *
Electronic Stethoscope 213,386 139 *
FET Audio Mixer 261,922 40
FM Transmitter 843,335 418
Guitar Fuzz Effect 171,359 51 *
Microphone Mixer Anatoly I. Shikhatov 181,003 25 *
Mono To Stereo Synthesizer oRbEq 74,721 16 *
One Tube Regenerative Radio NEW! 73,807 4 *
Op Amp Radio 290,649 80 *
Single Chip AM Radio NEW! 50,407 2 *
Single Chip FM Radio NEW! 91,217 0 *
Sound Level Meter 266,821 51 *
Stereo Tube Amplifier Weslee Kinsler 202,397 15 *
Tone Control 230,128 30
Transistor Organ 134,791 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 119,768 27 *
FM Telephone Bug 178,307 57
Phone Busy Indicator 138,730 24 *
Remote Telephone Ringer 77,147 3 *
Ringing Phone Light Flasher 152,231 32 *
Simple Phone Tap Derek Tombrello 301,742 98 *
Telephone Hold Button 75,944 9
Telephone Recorder 159,883 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.