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
Thursday, October 23, 2014
7 Segment LED Counter222
Infa-Red Remote Control141
Yesterday
Wednesday, October 22, 2014
7 Segment LED Counter400
12VDC To 120VAC Inverter237
Of All Time 12VDC To 120VAC Inverter1,248,530
FM Transmitter839,494

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 166,442 60 *
Car Alarm Arming Horn Beep Canceller bob 84,452 6 *
Wireless Auto Tachometer 255,159 57

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 109,924 29 *
Parallel (Printer) Port Interface 211,328 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 350,569 61 *
3 Channel Spectrum Analyzer 148,881 19
40W Fluorescent Lamp Inverter Bart Milnes 256,806 60 *
Adjustable Strobe Light 226,460 36
Black Light 192,449 29
Colour (Sound) Organ 214,917 34
Electronic Dice NEW! 121,389 8 *
Fantastic Atom Expander 132,358 24
Flash Slave Trigger 157,001 17 *
Infa-Red Remote Control 510,569 216 *
IR Remote Extender NEW! 66,006 2 *
IR Remote Jammer Carl 193,687 110 *
IR Remote Switch NEW! 94,968 9 *
LASER Transmitter/Receiver 319,466 91
LED Chaser 353,214 83 *
LED Metronome NEW! 61,070 3 *
LED Thermometer 150,751 22 *
Light/Dark Detector 233,399 89 *
Simple Colour Organ 91,059 10 *
Strobe Light 211,923 27 *
TRIAC Light Dimmer 397,420 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 278,625 122 *
Electromagnetic Levitator NEW! 85,278 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 730,251 214 *
AC Motor Speed Controller 280,096 28 *
Air Flow Detector 185,164 54 *
Digital Keypad Combination Lock 133,844 20
Low Voltage Alarm 161,406 58 *
Pine Racecar Victory Judge 59,638 1 *
Pulse Width Modulation DC Motor Control 551,135 93
Rain Detector 233,429 111 *
Simple Lie Detector 459,910 320
Simple Polarity Tester Dudley LeRoux 101,162 13 *
Simple Servo Controller 152,259 22 *
Simple Touch Switch NEW! 108,247 5 *
Simple Two Speed Contactor DC Motor Controller 149,011 21 *
Stepper Motor Controller 601,476 120 *
Time Delay Relay 445,215 86
Time Delay Relay II jawaharlal@excite.com 176,078 39 *
Touch Switch 225,327 51 *
Video Activated Relay 72,701 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 121,046 9 *
Water Detector With Sump/Bilge Pump Controller 99,307 18 *
Wire Loop Alarm Alex Meaden 152,415 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 207,208 24 *
12VDC To 120VAC Inverter 1,248,530 684
6V to 12V Converter 380,413 121
Automatic 12V Lead Acid Battery Charger 732,922 238
Automatic Load Sensing Power Switch 108,078 14 *
Car Battery Charger 743,230 158 *
Dual Polarity Power Supply 259,972 84 *
Fixed Voltage Power Supply 242,194 52 *
High Current Power Supply 251,296 64 *
High Voltage High Current Power Supply 192,005 34 *
LASER Power Supply 214,019 28
Portable CD Player Adapter For Car 150,300 12 *
Power Supply 612,303 258 *
Solid State Tesla Coil NEW! 87,861 2
Solid State Tesla Coil/High Voltage Generator 325,070 49
Transformerless Power Supply 369,946 116 *
Voltage Inverter 264,671 51 *
Voltage Inverter II 149,877 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 487,199 182
3 Watt FM Transmitter Rae XL Tkacik 253,493 80 *
50 Watt Amplifier 399,540 73
8 Note Tune Player 94,014 12 *
8 Watt Audio Amp 278,752 65 *
Aircraft Radio Communications Receiver 189,182 49 *
Crystal Radio 112,510 53 *
Digital Volume Control 261,440 46 *
Electronic Stethoscope 208,924 138 *
FET Audio Mixer 260,457 40
FM Transmitter 839,494 418
Guitar Fuzz Effect 170,057 51 *
Microphone Mixer Anatoly I. Shikhatov 179,993 25 *
Mono To Stereo Synthesizer oRbEq 73,769 16 *
One Tube Regenerative Radio NEW! 72,357 4 *
Op Amp Radio 288,588 80 *
Single Chip AM Radio NEW! 49,870 2 *
Single Chip FM Radio NEW! 90,073 0 *
Sound Level Meter 265,675 50 *
Stereo Tube Amplifier Weslee Kinsler 199,307 15 *
Tone Control 228,884 29
Transistor Organ 134,038 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 119,299 27 *
FM Telephone Bug 177,361 57
Phone Busy Indicator 137,401 24 *
Remote Telephone Ringer 76,815 3 *
Ringing Phone Light Flasher 151,467 32 *
Simple Phone Tap Derek Tombrello 300,621 98 *
Telephone Hold Button 75,490 9
Telephone Recorder 159,180 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.