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 17, 2018
Dual Polarity Power Supply19
AC Motor Speed Controller11
Yesterday
Thursday, August 16, 2018
Dual Polarity Power Supply120
Stepper Motor Controller79
Of All Time 12VDC To 120VAC Inverter1,416,491
FM Transmitter937,282

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 190,613 61 *
Car Alarm Arming Horn Beep Canceller bob 102,391 6 *
Wireless Auto Tachometer 298,169 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 133,357 29 *
Parallel (Printer) Port Interface 236,861 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 393,990 63 *
3 Channel Spectrum Analyzer 186,736 20
40W Fluorescent Lamp Inverter Bart Milnes 290,699 60 *
Adjustable Strobe Light 264,392 36
Black Light 226,239 29
Colour (Sound) Organ 248,073 36
Electronic Dice NEW! 151,711 10 *
Fantastic Atom Expander 162,362 25
Flash Slave Trigger 182,693 18 *
Infa-Red Remote Control 583,202 216 *
IR Remote Extender NEW! 92,727 2 *
IR Remote Jammer Carl 226,243 110 *
IR Remote Switch NEW! 122,680 9 *
LASER Transmitter/Receiver 364,378 92
LED Chaser 407,783 83 *
LED Metronome NEW! 81,398 3 *
LED Thermometer 176,911 22 *
Light/Dark Detector 276,018 90 *
Simple Colour Organ 111,630 10 *
Strobe Light 243,636 27 *
TRIAC Light Dimmer 456,582 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 312,772 122 *
Electromagnetic Levitator NEW! 113,414 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 860,012 214 *
AC Motor Speed Controller 340,260 29 *
Air Flow Detector 220,575 54 *
Digital Keypad Combination Lock 163,948 20
Low Voltage Alarm 194,209 58 *
Pine Racecar Victory Judge 76,018 1 *
Pulse Width Modulation DC Motor Control 611,181 93
Rain Detector 273,216 112 *
Simple Lie Detector 519,012 323
Simple Polarity Tester Dudley LeRoux 128,928 13 *
Simple Servo Controller 185,219 22 *
Simple Touch Switch NEW! 139,677 5 *
Simple Two Speed Contactor DC Motor Controller 176,051 21 *
Stepper Motor Controller 683,419 120 *
Time Delay Relay 513,727 88
Time Delay Relay II jawaharlal@excite.com 205,829 39 *
Touch Switch 257,173 51 *
Video Activated Relay 94,927 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 146,797 10 *
Water Detector With Sump/Bilge Pump Controller 120,498 18 *
Wire Loop Alarm Alex Meaden 178,138 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 269,661 25 *
12VDC To 120VAC Inverter 1,416,491 688
6V to 12V Converter 451,809 121
Automatic 12V Lead Acid Battery Charger 874,455 246
Automatic Load Sensing Power Switch 134,142 16 *
Car Battery Charger 826,813 159 *
Dual Polarity Power Supply 323,621 84 *
Fixed Voltage Power Supply 278,146 52 *
High Current Power Supply 295,680 65 *
High Voltage High Current Power Supply 221,688 35 *
LASER Power Supply 253,350 28
Portable CD Player Adapter For Car 179,897 12 *
Power Supply 688,233 259 *
Solid State Tesla Coil NEW! 118,447 4
Solid State Tesla Coil/High Voltage Generator 388,610 50
Transformerless Power Supply 419,148 117 *
Voltage Inverter 304,519 51 *
Voltage Inverter II 173,188 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 546,449 182
3 Watt FM Transmitter Rae XL Tkacik 296,216 82 *
50 Watt Amplifier 463,054 74
8 Note Tune Player 115,433 12 *
8 Watt Audio Amp 328,890 67 *
Aircraft Radio Communications Receiver 233,075 49 *
Crystal Radio 136,522 53 *
Digital Volume Control 296,708 47 *
Electronic Stethoscope 273,871 141 *
FET Audio Mixer 305,343 41
FM Transmitter 937,282 419
Guitar Fuzz Effect 205,931 52 *
Microphone Mixer Anatoly I. Shikhatov 215,008 26 *
Mono To Stereo Synthesizer oRbEq 98,542 18 *
One Tube Regenerative Radio NEW! 104,752 4 *
Op Amp Radio 344,629 80 *
Single Chip AM Radio NEW! 80,278 2 *
Single Chip FM Radio NEW! 133,541 1 *
Sound Level Meter 304,511 51 *
Stereo Tube Amplifier Weslee Kinsler 232,476 15 *
Tone Control 268,498 31
Transistor Organ 163,261 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 137,337 27 *
FM Telephone Bug 202,328 57
Phone Busy Indicator 184,448 24 *
Remote Telephone Ringer 93,225 3 *
Ringing Phone Light Flasher 182,056 34 *
Simple Phone Tap Derek Tombrello 329,533 98 *
Telephone Hold Button 97,682 10
Telephone Recorder 183,079 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.