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
Sunday, October 24, 2021
12VDC To 120VAC Inverter39
Black Light31
Yesterday
Saturday, October 23, 2021
12VDC To 120VAC Inverter27
Automatic 12V Lead Acid Battery Charger23
Of All Time 12VDC To 120VAC Inverter1,492,808
FM Transmitter983,214

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 218,674 61 *
Car Alarm Arming Horn Beep Canceller bob 129,269 6 *
Wireless Auto Tachometer 333,075 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 152,965 29 *
Parallel (Printer) Port Interface 274,308 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 435,984 63 *
3 Channel Spectrum Analyzer 211,680 20
40W Fluorescent Lamp Inverter Bart Milnes 321,138 60 *
Adjustable Strobe Light 298,088 36
Black Light 265,112 29
Colour (Sound) Organ 280,025 36
Electronic Dice NEW! 180,351 10 *
Fantastic Atom Expander 194,255 25
Flash Slave Trigger 211,393 18 *
Infa-Red Remote Control 622,906 216 *
IR Remote Extender NEW! 123,232 2 *
IR Remote Jammer Carl 253,989 110 *
IR Remote Switch NEW! 150,186 9 *
LASER Transmitter/Receiver 401,249 92
LED Chaser 434,458 83 *
LED Metronome NEW! 93,174 3 *
LED Thermometer 199,225 22 *
Light/Dark Detector 298,196 90 *
Simple Colour Organ 130,736 10 *
Strobe Light 266,281 27 *
TRIAC Light Dimmer 540,251 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 349,858 122 *
Electromagnetic Levitator NEW! 136,449 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 909,042 214 *
AC Motor Speed Controller 376,048 29 *
Air Flow Detector 243,613 54 *
Digital Keypad Combination Lock 188,909 20
Low Voltage Alarm 219,416 58 *
Pine Racecar Victory Judge 96,444 1 *
Pulse Width Modulation DC Motor Control 638,084 94
Rain Detector 296,377 112 *
Simple Lie Detector 550,750 323
Simple Polarity Tester Dudley LeRoux 157,213 13 *
Simple Servo Controller 212,524 22 *
Simple Touch Switch NEW! 161,504 5 *
Simple Two Speed Contactor DC Motor Controller 196,854 21 *
Stepper Motor Controller 730,373 120 *
Time Delay Relay 546,105 88
Time Delay Relay II jawaharlal@excite.com 236,100 39 *
Touch Switch 280,922 51 *
Video Activated Relay 114,574 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 171,605 10 *
Water Detector With Sump/Bilge Pump Controller 144,945 18 *
Wire Loop Alarm Alex Meaden 198,087 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 302,927 25 *
12VDC To 120VAC Inverter 1,492,808 689
6V to 12V Converter 513,205 121
Automatic 12V Lead Acid Battery Charger 920,400 248
Automatic Load Sensing Power Switch 158,344 16 *
Car Battery Charger 869,290 159 *
Dual Polarity Power Supply 361,045 84 *
Fixed Voltage Power Supply 301,231 52 *
High Current Power Supply 326,284 66 *
High Voltage High Current Power Supply 244,010 35 *
LASER Power Supply 285,260 28
Portable CD Player Adapter For Car 203,327 12 *
Power Supply 725,742 259 *
Solid State Tesla Coil NEW! 136,618 4
Solid State Tesla Coil/High Voltage Generator 429,903 50
Transformerless Power Supply 452,677 117 *
Voltage Inverter 326,109 51 *
Voltage Inverter II 192,849 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 574,898 182
3 Watt FM Transmitter Rae XL Tkacik 323,165 83 *
50 Watt Amplifier 496,313 74
8 Note Tune Player 133,758 12 *
8 Watt Audio Amp 360,915 67 *
Aircraft Radio Communications Receiver 266,277 49 *
Crystal Radio 152,027 53 *
Digital Volume Control 323,008 47 *
Electronic Stethoscope 303,543 142 *
FET Audio Mixer 332,913 41
FM Transmitter 983,214 420
Guitar Fuzz Effect 236,030 54 *
Microphone Mixer Anatoly I. Shikhatov 241,377 26 *
Mono To Stereo Synthesizer oRbEq 124,455 18 *
One Tube Regenerative Radio NEW! 126,431 4 *
Op Amp Radio 374,875 80 *
Single Chip AM Radio NEW! 92,804 2 *
Single Chip FM Radio NEW! 162,160 1 *
Sound Level Meter 331,733 51 *
Stereo Tube Amplifier Weslee Kinsler 258,821 15 *
Tone Control 298,836 31
Transistor Organ 189,608 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 156,516 27 *
FM Telephone Bug 228,616 57
Phone Busy Indicator 206,595 24 *
Remote Telephone Ringer 111,718 3 *
Ringing Phone Light Flasher 206,701 35 *
Simple Phone Tap Derek Tombrello 375,942 98 *
Telephone Hold Button 121,628 10
Telephone Recorder 208,961 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.