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
Tuesday, February 27, 2024
3 Watt FM Transmitter98
12VDC To 120VAC Inverter34
Yesterday
Monday, February 26, 2024
Op Amp Radio37
12VDC To 120VAC Inverter35
Of All Time 12VDC To 120VAC Inverter1,529,346
FM Transmitter1,007,916

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 227,207 61 *
Car Alarm Arming Horn Beep Canceller bob 136,835 6 *
Wireless Auto Tachometer 343,304 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 160,150 29 *
Parallel (Printer) Port Interface 285,934 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 447,835 63 *
3 Channel Spectrum Analyzer 221,887 20
40W Fluorescent Lamp Inverter Bart Milnes 330,400 60 *
Adjustable Strobe Light 309,232 36
Black Light 280,653 29
Colour (Sound) Organ 290,781 36
Electronic Dice NEW! 189,411 10 *
Fantastic Atom Expander 203,263 25
Flash Slave Trigger 221,499 18 *
Infa-Red Remote Control 637,289 216 *
IR Remote Extender NEW! 132,988 3 *
IR Remote Jammer Carl 266,134 110 *
IR Remote Switch NEW! 157,917 9 *
LASER Transmitter/Receiver 416,303 92
LED Chaser 446,106 83 *
LED Metronome NEW! 99,689 3 *
LED Thermometer 207,021 22 *
Light/Dark Detector 306,395 90 *
Simple Colour Organ 137,872 11 *
Strobe Light 276,165 27 *
TRIAC Light Dimmer 552,800 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 359,555 122 *
Electromagnetic Levitator NEW! 144,682 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 922,401 214 *
AC Motor Speed Controller 391,454 29 *
Air Flow Detector 252,018 54 *
Digital Keypad Combination Lock 202,611 20
Low Voltage Alarm 229,516 58 *
Pine Racecar Victory Judge 103,061 1 *
Pulse Width Modulation DC Motor Control 654,982 94
Rain Detector 304,992 112 *
Simple Lie Detector 564,723 323
Simple Polarity Tester Dudley LeRoux 165,764 13 *
Simple Servo Controller 221,697 22 *
Simple Touch Switch NEW! 170,154 6 *
Simple Two Speed Contactor DC Motor Controller 205,548 21 *
Stepper Motor Controller 745,698 120 *
Time Delay Relay 555,837 88
Time Delay Relay II jawaharlal@excite.com 247,206 39 *
Touch Switch 290,013 51 *
Video Activated Relay 122,096 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 181,442 10 *
Water Detector With Sump/Bilge Pump Controller 153,094 18 *
Wire Loop Alarm Alex Meaden 206,124 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 316,046 25 *
12VDC To 120VAC Inverter 1,529,346 691
6V to 12V Converter 527,544 121
Automatic 12V Lead Acid Battery Charger 937,320 248
Automatic Load Sensing Power Switch 167,654 16 *
Car Battery Charger 883,369 159 *
Dual Polarity Power Supply 371,435 84 *
Fixed Voltage Power Supply 311,566 52 *
High Current Power Supply 339,067 66 *
High Voltage High Current Power Supply 264,293 35 *
LASER Power Supply 296,393 28
Portable CD Player Adapter For Car 212,763 12 *
Power Supply 738,661 259 *
Solid State Tesla Coil NEW! 146,606 4
Solid State Tesla Coil/High Voltage Generator 444,478 51
Transformerless Power Supply 463,380 117 *
Voltage Inverter 338,671 51 *
Voltage Inverter II 203,290 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 585,620 182
3 Watt FM Transmitter Rae XL Tkacik 335,470 83 *
50 Watt Amplifier 507,942 74
8 Note Tune Player 141,051 12 *
8 Watt Audio Amp 372,864 67 *
Aircraft Radio Communications Receiver 278,645 49 *
Crystal Radio 159,166 53 *
Digital Volume Control 338,635 47 *
Electronic Stethoscope 321,514 142 *
FET Audio Mixer 343,905 41
FM Transmitter 1,007,916 420
Guitar Fuzz Effect 247,760 54 *
Microphone Mixer Anatoly I. Shikhatov 250,971 26 *
Mono To Stereo Synthesizer oRbEq 134,120 18 *
One Tube Regenerative Radio NEW! 141,972 4 *
Op Amp Radio 388,916 80 *
Single Chip AM Radio NEW! 100,176 3 *
Single Chip FM Radio NEW! 172,896 1 *
Sound Level Meter 342,280 51 *
Stereo Tube Amplifier Weslee Kinsler 268,645 15 *
Tone Control 310,126 31
Transistor Organ 199,898 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 164,030 27 *
FM Telephone Bug 235,877 57
Phone Busy Indicator 214,394 24 *
Remote Telephone Ringer 118,773 3 *
Ringing Phone Light Flasher 218,424 35 *
Simple Phone Tap Derek Tombrello 384,058 98 *
Telephone Hold Button 129,537 10
Telephone Recorder 216,960 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.