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, March 01, 2024
12V To 24V DC-DC Converter11
IR Remote Jammer10
Yesterday
Thursday, February 29, 2024
12VDC To 120VAC Inverter57
FM Transmitter27
Of All Time 12VDC To 120VAC Inverter1,529,468
FM Transmitter1,007,991

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 227,224 61 *
Car Alarm Arming Horn Beep Canceller bob 136,841 6 *
Wireless Auto Tachometer 343,320 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 160,159 29 *
Parallel (Printer) Port Interface 285,964 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 447,867 63 *
3 Channel Spectrum Analyzer 221,905 20
40W Fluorescent Lamp Inverter Bart Milnes 330,415 60 *
Adjustable Strobe Light 309,249 36
Black Light 280,686 29
Colour (Sound) Organ 290,812 36
Electronic Dice NEW! 189,429 10 *
Fantastic Atom Expander 203,277 25
Flash Slave Trigger 221,524 18 *
Infa-Red Remote Control 637,314 216 *
IR Remote Extender NEW! 133,009 3 *
IR Remote Jammer Carl 266,163 110 *
IR Remote Switch NEW! 157,932 9 *
LASER Transmitter/Receiver 416,351 92
LED Chaser 446,133 83 *
LED Metronome NEW! 99,701 3 *
LED Thermometer 207,041 22 *
Light/Dark Detector 306,423 90 *
Simple Colour Organ 137,889 11 *
Strobe Light 276,187 27 *
TRIAC Light Dimmer 552,839 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 359,576 122 *
Electromagnetic Levitator NEW! 144,718 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 922,433 214 *
AC Motor Speed Controller 391,489 29 *
Air Flow Detector 252,038 54 *
Digital Keypad Combination Lock 202,621 20
Low Voltage Alarm 229,544 58 *
Pine Racecar Victory Judge 103,069 1 *
Pulse Width Modulation DC Motor Control 655,020 94
Rain Detector 305,013 112 *
Simple Lie Detector 564,751 323
Simple Polarity Tester Dudley LeRoux 165,780 13 *
Simple Servo Controller 221,713 22 *
Simple Touch Switch NEW! 170,171 6 *
Simple Two Speed Contactor DC Motor Controller 205,558 21 *
Stepper Motor Controller 745,771 120 *
Time Delay Relay 555,865 88
Time Delay Relay II jawaharlal@excite.com 247,230 39 *
Touch Switch 290,032 51 *
Video Activated Relay 122,109 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 181,487 10 *
Water Detector With Sump/Bilge Pump Controller 153,109 18 *
Wire Loop Alarm Alex Meaden 206,132 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 316,098 25 *
12VDC To 120VAC Inverter 1,529,468 691
6V to 12V Converter 527,581 121
Automatic 12V Lead Acid Battery Charger 937,354 248
Automatic Load Sensing Power Switch 167,672 16 *
Car Battery Charger 883,407 159 *
Dual Polarity Power Supply 371,456 84 *
Fixed Voltage Power Supply 311,583 52 *
High Current Power Supply 339,108 66 *
High Voltage High Current Power Supply 264,341 35 *
LASER Power Supply 296,418 28
Portable CD Player Adapter For Car 212,777 12 *
Power Supply 738,699 259 *
Solid State Tesla Coil NEW! 146,648 4
Solid State Tesla Coil/High Voltage Generator 444,520 51
Transformerless Power Supply 463,407 117 *
Voltage Inverter 338,731 51 *
Voltage Inverter II 203,319 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 585,652 182
3 Watt FM Transmitter Rae XL Tkacik 335,505 83 *
50 Watt Amplifier 507,978 74
8 Note Tune Player 141,064 12 *
8 Watt Audio Amp 372,913 67 *
Aircraft Radio Communications Receiver 278,701 49 *
Crystal Radio 159,194 53 *
Digital Volume Control 338,661 47 *
Electronic Stethoscope 321,548 142 *
FET Audio Mixer 343,927 41
FM Transmitter 1,007,991 420
Guitar Fuzz Effect 247,808 54 *
Microphone Mixer Anatoly I. Shikhatov 250,997 26 *
Mono To Stereo Synthesizer oRbEq 134,143 18 *
One Tube Regenerative Radio NEW! 142,040 4 *
Op Amp Radio 388,956 80 *
Single Chip AM Radio NEW! 100,188 3 *
Single Chip FM Radio NEW! 172,939 1 *
Sound Level Meter 342,302 51 *
Stereo Tube Amplifier Weslee Kinsler 268,673 15 *
Tone Control 310,142 31
Transistor Organ 199,920 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 164,048 27 *
FM Telephone Bug 235,890 57
Phone Busy Indicator 214,402 24 *
Remote Telephone Ringer 118,778 3 *
Ringing Phone Light Flasher 218,458 35 *
Simple Phone Tap Derek Tombrello 384,073 98 *
Telephone Hold Button 129,548 10
Telephone Recorder 216,970 55 *


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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.