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, August 23, 2019
6V to 12V Converter64
12VDC To 120VAC Inverter36
Yesterday
Thursday, August 22, 2019
Parallel (Printer) Port Interface262
12VDC To 120VAC Inverter69
Of All Time 12VDC To 120VAC Inverter1,446,216
FM Transmitter955,556

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 200,295 61 *
Car Alarm Arming Horn Beep Canceller bob 111,467 6 *
Wireless Auto Tachometer 310,761 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 139,660 29 *
Parallel (Printer) Port Interface 250,889 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 407,202 63 *
3 Channel Spectrum Analyzer 195,412 20
40W Fluorescent Lamp Inverter Bart Milnes 300,777 60 *
Adjustable Strobe Light 276,227 36
Black Light 238,937 29
Colour (Sound) Organ 258,844 36
Electronic Dice NEW! 161,233 10 *
Fantastic Atom Expander 173,259 25
Flash Slave Trigger 192,007 18 *
Infa-Red Remote Control 597,745 216 *
IR Remote Extender NEW! 102,099 2 *
IR Remote Jammer Carl 235,013 110 *
IR Remote Switch NEW! 131,720 9 *
LASER Transmitter/Receiver 376,652 92
LED Chaser 417,555 83 *
LED Metronome NEW! 85,602 3 *
LED Thermometer 184,652 22 *
Light/Dark Detector 282,657 90 *
Simple Colour Organ 118,356 10 *
Strobe Light 251,497 27 *
TRIAC Light Dimmer 467,869 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 324,989 122 *
Electromagnetic Levitator NEW! 122,027 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 879,115 214 *
AC Motor Speed Controller 354,835 29 *
Air Flow Detector 228,976 54 *
Digital Keypad Combination Lock 173,768 20
Low Voltage Alarm 203,051 58 *
Pine Racecar Victory Judge 83,696 1 *
Pulse Width Modulation DC Motor Control 620,580 93
Rain Detector 282,365 112 *
Simple Lie Detector 532,095 323
Simple Polarity Tester Dudley LeRoux 138,329 13 *
Simple Servo Controller 196,750 22 *
Simple Touch Switch NEW! 147,857 5 *
Simple Two Speed Contactor DC Motor Controller 182,478 21 *
Stepper Motor Controller 706,776 120 *
Time Delay Relay 525,835 88
Time Delay Relay II jawaharlal@excite.com 216,473 39 *
Touch Switch 265,414 51 *
Video Activated Relay 101,984 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 156,032 10 *
Water Detector With Sump/Bilge Pump Controller 127,598 18 *
Wire Loop Alarm Alex Meaden 184,630 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 283,506 25 *
12VDC To 120VAC Inverter 1,446,216 688
6V to 12V Converter 469,516 121
Automatic 12V Lead Acid Battery Charger 892,178 246
Automatic Load Sensing Power Switch 141,702 16 *
Car Battery Charger 844,390 159 *
Dual Polarity Power Supply 348,388 84 *
Fixed Voltage Power Supply 285,762 52 *
High Current Power Supply 306,526 65 *
High Voltage High Current Power Supply 229,089 35 *
LASER Power Supply 266,861 28
Portable CD Player Adapter For Car 187,419 12 *
Power Supply 703,367 259 *
Solid State Tesla Coil NEW! 125,297 4
Solid State Tesla Coil/High Voltage Generator 404,848 50
Transformerless Power Supply 433,995 117 *
Voltage Inverter 311,175 51 *
Voltage Inverter II 179,197 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 556,402 182
3 Watt FM Transmitter Rae XL Tkacik 305,239 82 *
50 Watt Amplifier 476,960 74
8 Note Tune Player 121,067 12 *
8 Watt Audio Amp 341,278 67 *
Aircraft Radio Communications Receiver 244,900 49 *
Crystal Radio 143,139 53 *
Digital Volume Control 306,103 47 *
Electronic Stethoscope 283,676 141 *
FET Audio Mixer 314,910 41
FM Transmitter 955,556 419
Guitar Fuzz Effect 218,014 52 *
Microphone Mixer Anatoly I. Shikhatov 224,650 26 *
Mono To Stereo Synthesizer oRbEq 108,076 18 *
One Tube Regenerative Radio NEW! 113,389 4 *
Op Amp Radio 354,748 80 *
Single Chip AM Radio NEW! 84,776 2 *
Single Chip FM Radio NEW! 144,718 1 *
Sound Level Meter 315,515 51 *
Stereo Tube Amplifier Weslee Kinsler 242,698 15 *
Tone Control 279,722 31
Transistor Organ 172,378 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 143,237 27 *
FM Telephone Bug 214,261 57
Phone Busy Indicator 193,074 24 *
Remote Telephone Ringer 98,756 3 *
Ringing Phone Light Flasher 189,827 34 *
Simple Phone Tap Derek Tombrello 341,595 98 *
Telephone Hold Button 107,398 10
Telephone Recorder 190,951 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.