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, July 21, 2018
22 Watt Audio Amplifier70
Dual Polarity Power Supply34
Yesterday
Friday, July 20, 2018
Dual Polarity Power Supply75
Simple Lie Detector74
Of All Time 12VDC To 120VAC Inverter1,415,024
FM Transmitter936,323

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 190,136 61 *
Car Alarm Arming Horn Beep Canceller bob 101,946 6 *
Wireless Auto Tachometer 297,808 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 133,083 29 *
Parallel (Printer) Port Interface 236,505 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 393,563 63 *
3 Channel Spectrum Analyzer 186,122 20
40W Fluorescent Lamp Inverter Bart Milnes 290,373 60 *
Adjustable Strobe Light 263,776 36
Black Light 225,595 29
Colour (Sound) Organ 247,741 36
Electronic Dice NEW! 151,441 10 *
Fantastic Atom Expander 161,860 25
Flash Slave Trigger 182,197 18 *
Infa-Red Remote Control 582,251 216 *
IR Remote Extender NEW! 92,380 2 *
IR Remote Jammer Carl 225,590 110 *
IR Remote Switch NEW! 122,394 9 *
LASER Transmitter/Receiver 363,743 92
LED Chaser 407,084 83 *
LED Metronome NEW! 81,106 3 *
LED Thermometer 176,403 22 *
Light/Dark Detector 275,692 90 *
Simple Colour Organ 111,190 10 *
Strobe Light 243,155 27 *
TRIAC Light Dimmer 456,152 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 312,340 122 *
Electromagnetic Levitator NEW! 112,886 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 859,093 214 *
AC Motor Speed Controller 339,418 29 *
Air Flow Detector 220,037 54 *
Digital Keypad Combination Lock 163,509 20
Low Voltage Alarm 193,664 58 *
Pine Racecar Victory Judge 75,621 1 *
Pulse Width Modulation DC Motor Control 610,621 93
Rain Detector 272,497 112 *
Simple Lie Detector 518,332 323
Simple Polarity Tester Dudley LeRoux 128,425 13 *
Simple Servo Controller 184,919 22 *
Simple Touch Switch NEW! 139,185 5 *
Simple Two Speed Contactor DC Motor Controller 175,797 21 *
Stepper Motor Controller 681,499 120 *
Time Delay Relay 512,919 88
Time Delay Relay II jawaharlal@excite.com 205,162 39 *
Touch Switch 256,630 51 *
Video Activated Relay 94,470 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 146,477 10 *
Water Detector With Sump/Bilge Pump Controller 120,000 18 *
Wire Loop Alarm Alex Meaden 177,828 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 268,993 25 *
12VDC To 120VAC Inverter 1,415,024 688
6V to 12V Converter 450,913 121
Automatic 12V Lead Acid Battery Charger 873,578 246
Automatic Load Sensing Power Switch 133,777 16 *
Car Battery Charger 825,463 159 *
Dual Polarity Power Supply 320,912 84 *
Fixed Voltage Power Supply 277,790 52 *
High Current Power Supply 295,299 65 *
High Voltage High Current Power Supply 221,386 35 *
LASER Power Supply 252,885 28
Portable CD Player Adapter For Car 179,519 12 *
Power Supply 687,421 259 *
Solid State Tesla Coil NEW! 118,076 4
Solid State Tesla Coil/High Voltage Generator 387,765 50
Transformerless Power Supply 418,731 117 *
Voltage Inverter 304,084 51 *
Voltage Inverter II 172,916 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 545,854 182
3 Watt FM Transmitter Rae XL Tkacik 295,757 82 *
50 Watt Amplifier 462,312 74
8 Note Tune Player 115,225 12 *
8 Watt Audio Amp 328,359 67 *
Aircraft Radio Communications Receiver 232,514 49 *
Crystal Radio 136,250 53 *
Digital Volume Control 296,303 47 *
Electronic Stethoscope 273,429 141 *
FET Audio Mixer 304,796 41
FM Transmitter 936,323 419
Guitar Fuzz Effect 205,403 52 *
Microphone Mixer Anatoly I. Shikhatov 214,661 26 *
Mono To Stereo Synthesizer oRbEq 98,221 18 *
One Tube Regenerative Radio NEW! 104,333 4 *
Op Amp Radio 344,144 80 *
Single Chip AM Radio NEW! 79,996 2 *
Single Chip FM Radio NEW! 133,118 1 *
Sound Level Meter 304,081 51 *
Stereo Tube Amplifier Weslee Kinsler 232,182 15 *
Tone Control 268,137 31
Transistor Organ 162,943 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 137,083 27 *
FM Telephone Bug 202,066 57
Phone Busy Indicator 184,090 24 *
Remote Telephone Ringer 93,029 3 *
Ringing Phone Light Flasher 181,657 34 *
Simple Phone Tap Derek Tombrello 329,295 98 *
Telephone Hold Button 97,436 10
Telephone Recorder 182,765 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.