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
Saturday, June 24, 2017
12VDC To 120VAC Inverter17
Strobe Light15
Yesterday
Friday, June 23, 2017
12VDC To 120VAC Inverter131
Simple Two Speed Contactor DC Motor Controller 55
Of All Time 12VDC To 120VAC Inverter1,381,256
FM Transmitter918,567

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 183,812 61 *
Car Alarm Arming Horn Beep Canceller bob 96,371 6 *
Wireless Auto Tachometer 290,689 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 127,659 29 *
Parallel (Printer) Port Interface 229,985 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 384,353 62 *
3 Channel Spectrum Analyzer 177,369 20
40W Fluorescent Lamp Inverter Bart Milnes 283,243 60 *
Adjustable Strobe Light 255,209 36
Black Light 217,641 29
Colour (Sound) Organ 239,980 36
Electronic Dice NEW! 145,513 9 *
Fantastic Atom Expander 154,359 25
Flash Slave Trigger 175,957 17 *
Infa-Red Remote Control 572,126 216 *
IR Remote Extender NEW! 85,233 2 *
IR Remote Jammer Carl 217,873 110 *
IR Remote Switch NEW! 115,399 9 *
LASER Transmitter/Receiver 355,391 92
LED Chaser 397,991 83 *
LED Metronome NEW! 75,941 3 *
LED Thermometer 169,399 22 *
Light/Dark Detector 267,729 89 *
Simple Colour Organ 106,036 10 *
Strobe Light 236,976 27 *
TRIAC Light Dimmer 445,921 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 305,331 122 *
Electromagnetic Levitator NEW! 105,993 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 844,146 214 *
AC Motor Speed Controller 327,745 29 *
Air Flow Detector 213,000 54 *
Digital Keypad Combination Lock 157,041 20
Low Voltage Alarm 185,263 58 *
Pine Racecar Victory Judge 70,606 1 *
Pulse Width Modulation DC Motor Control 599,990 93
Rain Detector 265,555 112 *
Simple Lie Detector 507,664 323
Simple Polarity Tester Dudley LeRoux 121,808 13 *
Simple Servo Controller 177,579 22 *
Simple Touch Switch NEW! 132,946 5 *
Simple Two Speed Contactor DC Motor Controller 169,755 21 *
Stepper Motor Controller 661,582 120 *
Time Delay Relay 500,639 88
Time Delay Relay II jawaharlal@excite.com 197,743 39 *
Touch Switch 249,061 51 *
Video Activated Relay 88,456 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 139,867 10 *
Water Detector With Sump/Bilge Pump Controller 113,734 18 *
Wire Loop Alarm Alex Meaden 171,337 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 257,808 25 *
12VDC To 120VAC Inverter 1,381,256 687
6V to 12V Converter 435,243 121
Automatic 12V Lead Acid Battery Charger 851,919 246
Automatic Load Sensing Power Switch 126,864 15 *
Car Battery Charger 806,365 159 *
Dual Polarity Power Supply 294,464 84 *
Fixed Voltage Power Supply 270,598 52 *
High Current Power Supply 287,257 64 *
High Voltage High Current Power Supply 214,937 35 *
LASER Power Supply 244,224 28
Portable CD Player Adapter For Car 171,903 12 *
Power Supply 672,919 259 *
Solid State Tesla Coil NEW! 110,057 3
Solid State Tesla Coil/High Voltage Generator 374,619 50
Transformerless Power Supply 409,847 117 *
Voltage Inverter 295,802 51 *
Voltage Inverter II 167,911 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 533,755 182
3 Watt FM Transmitter Rae XL Tkacik 286,809 81 *
50 Watt Amplifier 449,544 74
8 Note Tune Player 109,764 12 *
8 Watt Audio Amp 318,382 67 *
Aircraft Radio Communications Receiver 223,069 49 *
Crystal Radio 130,523 53 *
Digital Volume Control 287,816 47 *
Electronic Stethoscope 263,227 141 *
FET Audio Mixer 292,954 40
FM Transmitter 918,567 418
Guitar Fuzz Effect 197,226 52 *
Microphone Mixer Anatoly I. Shikhatov 206,052 26 *
Mono To Stereo Synthesizer oRbEq 92,407 18 *
One Tube Regenerative Radio NEW! 96,859 4 *
Op Amp Radio 332,078 80 *
Single Chip AM Radio NEW! 74,673 2 *
Single Chip FM Radio NEW! 124,885 1 *
Sound Level Meter 296,127 51 *
Stereo Tube Amplifier Weslee Kinsler 225,171 15 *
Tone Control 258,629 31
Transistor Organ 155,851 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 132,245 27 *
FM Telephone Bug 195,860 57
Phone Busy Indicator 174,277 24 *
Remote Telephone Ringer 88,340 3 *
Ringing Phone Light Flasher 173,724 33 *
Simple Phone Tap Derek Tombrello 323,517 98 *
Telephone Hold Button 92,341 9
Telephone Recorder 176,424 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.