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, October 31, 2014
7 Segment LED Counter68
LED Chaser46
Yesterday
Thursday, October 30, 2014
7 Segment LED Counter599
Infa-Red Remote Control239
Of All Time 12VDC To 120VAC Inverter1,250,111
FM Transmitter840,482

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 166,644 60 *
Car Alarm Arming Horn Beep Canceller bob 84,597 6 *
Wireless Auto Tachometer 255,803 57

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 110,090 29 *
Parallel (Printer) Port Interface 211,501 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 350,905 61 *
3 Channel Spectrum Analyzer 149,135 19
40W Fluorescent Lamp Inverter Bart Milnes 257,050 60 *
Adjustable Strobe Light 226,731 36
Black Light 192,651 29
Colour (Sound) Organ 215,162 34
Electronic Dice NEW! 121,610 8 *
Fantastic Atom Expander 132,564 24
Flash Slave Trigger 157,167 17 *
Infa-Red Remote Control 512,379 216 *
IR Remote Extender NEW! 66,183 2 *
IR Remote Jammer Carl 193,921 110 *
IR Remote Switch NEW! 95,135 9 *
LASER Transmitter/Receiver 319,857 91
LED Chaser 354,905 83 *
LED Metronome NEW! 61,191 3 *
LED Thermometer 150,928 22 *
Light/Dark Detector 233,615 89 *
Simple Colour Organ 91,191 10 *
Strobe Light 212,102 27 *
TRIAC Light Dimmer 397,929 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 278,811 122 *
Electromagnetic Levitator NEW! 85,497 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 734,495 214 *
AC Motor Speed Controller 280,981 28 *
Air Flow Detector 185,590 54 *
Digital Keypad Combination Lock 134,337 20
Low Voltage Alarm 161,602 58 *
Pine Racecar Victory Judge 59,742 1 *
Pulse Width Modulation DC Motor Control 551,748 93
Rain Detector 233,757 111 *
Simple Lie Detector 460,703 320
Simple Polarity Tester Dudley LeRoux 101,339 13 *
Simple Servo Controller 152,754 22 *
Simple Touch Switch NEW! 108,519 5 *
Simple Two Speed Contactor DC Motor Controller 149,415 21 *
Stepper Motor Controller 602,236 120 *
Time Delay Relay 446,034 86
Time Delay Relay II jawaharlal@excite.com 176,447 39 *
Touch Switch 225,739 51 *
Video Activated Relay 72,879 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 121,205 9 *
Water Detector With Sump/Bilge Pump Controller 99,514 18 *
Wire Loop Alarm Alex Meaden 152,559 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 207,796 24 *
12VDC To 120VAC Inverter 1,250,111 684
6V to 12V Converter 380,942 121
Automatic 12V Lead Acid Battery Charger 734,483 238
Automatic Load Sensing Power Switch 108,242 14 *
Car Battery Charger 743,956 158 *
Dual Polarity Power Supply 260,382 84 *
Fixed Voltage Power Supply 242,535 52 *
High Current Power Supply 251,628 64 *
High Voltage High Current Power Supply 192,207 34 *
LASER Power Supply 214,315 28
Portable CD Player Adapter For Car 150,451 12 *
Power Supply 613,252 258 *
Solid State Tesla Coil NEW! 88,066 2
Solid State Tesla Coil/High Voltage Generator 325,514 49
Transformerless Power Supply 370,380 116 *
Voltage Inverter 264,947 51 *
Voltage Inverter II 150,119 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 487,726 182
3 Watt FM Transmitter Rae XL Tkacik 253,806 80 *
50 Watt Amplifier 400,071 73
8 Note Tune Player 94,141 12 *
8 Watt Audio Amp 279,144 65 *
Aircraft Radio Communications Receiver 189,484 49 *
Crystal Radio 112,653 53 *
Digital Volume Control 261,662 46 *
Electronic Stethoscope 209,225 138 *
FET Audio Mixer 260,797 40
FM Transmitter 840,482 418
Guitar Fuzz Effect 170,388 51 *
Microphone Mixer Anatoly I. Shikhatov 180,232 25 *
Mono To Stereo Synthesizer oRbEq 73,981 16 *
One Tube Regenerative Radio NEW! 72,741 4 *
Op Amp Radio 288,971 80 *
Single Chip AM Radio NEW! 49,996 2 *
Single Chip FM Radio NEW! 90,352 0 *
Sound Level Meter 265,931 50 *
Stereo Tube Amplifier Weslee Kinsler 199,930 15 *
Tone Control 229,200 29
Transistor Organ 134,206 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 119,396 27 *
FM Telephone Bug 177,563 57
Phone Busy Indicator 137,703 24 *
Remote Telephone Ringer 76,898 3 *
Ringing Phone Light Flasher 151,664 32 *
Simple Phone Tap Derek Tombrello 300,882 98 *
Telephone Hold Button 75,612 9
Telephone Recorder 159,341 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.