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
Tuesday, November 25, 2014
7 Segment LED Counter559
Electronic Stethoscope253
Yesterday
Monday, November 24, 2014
7 Segment LED Counter519
Electronic Stethoscope244
Of All Time 12VDC To 120VAC Inverter1,255,207
FM Transmitter843,887

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 167,615 61 *
Car Alarm Arming Horn Beep Canceller bob 85,131 6 *
Wireless Auto Tachometer 259,788 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 110,776 29 *
Parallel (Printer) Port Interface 212,113 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 352,243 61 *
3 Channel Spectrum Analyzer 150,137 19
40W Fluorescent Lamp Inverter Bart Milnes 257,949 60 *
Adjustable Strobe Light 227,760 36
Black Light 193,496 29
Colour (Sound) Organ 216,053 34
Electronic Dice NEW! 122,548 8 *
Fantastic Atom Expander 133,396 24
Flash Slave Trigger 157,760 17 *
Infa-Red Remote Control 517,540 216 *
IR Remote Extender NEW! 66,822 2 *
IR Remote Jammer Carl 194,751 110 *
IR Remote Switch NEW! 95,937 9 *
LASER Transmitter/Receiver 321,320 91
LED Chaser 359,204 83 *
LED Metronome NEW! 61,665 3 *
LED Thermometer 151,600 22 *
Light/Dark Detector 234,400 89 *
Simple Colour Organ 91,630 10 *
Strobe Light 212,727 27 *
TRIAC Light Dimmer 400,071 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 279,618 122 *
Electromagnetic Levitator NEW! 86,238 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 748,192 214 *
AC Motor Speed Controller 283,352 29 *
Air Flow Detector 186,988 54 *
Digital Keypad Combination Lock 136,094 20
Low Voltage Alarm 162,327 58 *
Pine Racecar Victory Judge 60,047 1 *
Pulse Width Modulation DC Motor Control 553,859 93
Rain Detector 234,900 111 *
Simple Lie Detector 463,575 321
Simple Polarity Tester Dudley LeRoux 101,960 13 *
Simple Servo Controller 154,522 22 *
Simple Touch Switch NEW! 109,540 5 *
Simple Two Speed Contactor DC Motor Controller 150,566 21 *
Stepper Motor Controller 605,477 120 *
Time Delay Relay 448,863 86
Time Delay Relay II jawaharlal@excite.com 177,465 39 *
Touch Switch 226,975 51 *
Video Activated Relay 73,395 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 121,850 9 *
Water Detector With Sump/Bilge Pump Controller 100,317 18 *
Wire Loop Alarm Alex Meaden 153,159 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 209,776 24 *
12VDC To 120VAC Inverter 1,255,207 684
6V to 12V Converter 382,700 121
Automatic 12V Lead Acid Battery Charger 739,684 238
Automatic Load Sensing Power Switch 108,780 14 *
Car Battery Charger 746,513 158 *
Dual Polarity Power Supply 261,658 84 *
Fixed Voltage Power Supply 243,669 52 *
High Current Power Supply 252,764 64 *
High Voltage High Current Power Supply 192,935 34 *
LASER Power Supply 215,428 28
Portable CD Player Adapter For Car 151,122 12 *
Power Supply 616,320 258 *
Solid State Tesla Coil NEW! 88,860 2
Solid State Tesla Coil/High Voltage Generator 327,378 49
Transformerless Power Supply 372,058 116 *
Voltage Inverter 266,026 51 *
Voltage Inverter II 150,901 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 489,922 182
3 Watt FM Transmitter Rae XL Tkacik 255,047 80 *
50 Watt Amplifier 402,619 73
8 Note Tune Player 94,578 12 *
8 Watt Audio Amp 280,845 66 *
Aircraft Radio Communications Receiver 190,634 49 *
Crystal Radio 113,232 53 *
Digital Volume Control 262,539 46 *
Electronic Stethoscope 214,557 139 *
FET Audio Mixer 262,141 40
FM Transmitter 843,887 418
Guitar Fuzz Effect 171,533 51 *
Microphone Mixer Anatoly I. Shikhatov 181,107 25 *
Mono To Stereo Synthesizer oRbEq 74,842 16 *
One Tube Regenerative Radio NEW! 73,990 4 *
Op Amp Radio 291,120 80 *
Single Chip AM Radio NEW! 50,479 2 *
Single Chip FM Radio NEW! 91,374 0 *
Sound Level Meter 267,031 51 *
Stereo Tube Amplifier Weslee Kinsler 202,838 15 *
Tone Control 230,309 30
Transistor Organ 134,898 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 119,821 27 *
FM Telephone Bug 178,417 57
Phone Busy Indicator 138,933 24 *
Remote Telephone Ringer 77,204 3 *
Ringing Phone Light Flasher 152,333 32 *
Simple Phone Tap Derek Tombrello 301,915 98 *
Telephone Hold Button 76,019 9
Telephone Recorder 160,093 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.