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, September 20, 2014
Automatic 12V Lead Acid Battery Charger149
Power Supply123
Yesterday
Friday, September 19, 2014
Automatic 12V Lead Acid Battery Charger189
12VDC To 120VAC Inverter187
Of All Time 12VDC To 120VAC Inverter1,241,602
FM Transmitter835,449

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 165,469 60 *
Car Alarm Arming Horn Beep Canceller bob 84,008 6 *
Wireless Auto Tachometer 253,755 57

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 109,325 29 *
Parallel (Printer) Port Interface 210,499 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 348,935 61 *
3 Channel Spectrum Analyzer 147,740 19
40W Fluorescent Lamp Inverter Bart Milnes 255,636 60 *
Adjustable Strobe Light 225,291 36
Black Light 191,561 29
Colour (Sound) Organ 214,088 34
Electronic Dice NEW! 120,434 8 *
Fantastic Atom Expander 131,653 24
Flash Slave Trigger 156,354 17 *
Infa-Red Remote Control 505,890 216 *
IR Remote Extender NEW! 65,307 2 *
IR Remote Jammer Carl 192,629 110 *
IR Remote Switch NEW! 94,100 9 *
LASER Transmitter/Receiver 317,794 91
LED Chaser 348,757 83 *
LED Metronome NEW! 60,483 3 *
LED Thermometer 149,926 22 *
Light/Dark Detector 232,358 89 *
Simple Colour Organ 90,561 10 *
Strobe Light 210,152 27 *
TRIAC Light Dimmer 394,912 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 277,787 122 *
Electromagnetic Levitator NEW! 84,551 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 724,103 214 *
AC Motor Speed Controller 278,024 28 *
Air Flow Detector 183,488 54 *
Digital Keypad Combination Lock 133,049 20
Low Voltage Alarm 160,387 58 *
Pine Racecar Victory Judge 59,288 1 *
Pulse Width Modulation DC Motor Control 547,073 93
Rain Detector 232,328 111 *
Simple Lie Detector 457,156 320
Simple Polarity Tester Dudley LeRoux 100,505 13 *
Simple Servo Controller 150,838 22 *
Simple Touch Switch NEW! 107,107 5 *
Simple Two Speed Contactor DC Motor Controller 148,130 21 *
Stepper Motor Controller 598,057 120 *
Time Delay Relay 442,027 86
Time Delay Relay II jawaharlal@excite.com 175,247 39 *
Touch Switch 224,439 51 *
Video Activated Relay 72,015 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 120,253 9 *
Water Detector With Sump/Bilge Pump Controller 98,719 18 *
Wire Loop Alarm Alex Meaden 151,601 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 204,478 24 *
12VDC To 120VAC Inverter 1,241,602 684
6V to 12V Converter 377,994 121
Automatic 12V Lead Acid Battery Charger 727,029 238
Automatic Load Sensing Power Switch 107,475 14 *
Car Battery Charger 740,500 158 *
Dual Polarity Power Supply 258,545 84 *
Fixed Voltage Power Supply 240,891 52 *
High Current Power Supply 249,723 64 *
High Voltage High Current Power Supply 191,030 34 *
LASER Power Supply 212,763 28
Portable CD Player Adapter For Car 149,566 12 *
Power Supply 608,106 258 *
Solid State Tesla Coil NEW! 86,798 2
Solid State Tesla Coil/High Voltage Generator 322,323 49
Transformerless Power Supply 367,998 116 *
Voltage Inverter 263,344 51 *
Voltage Inverter II 148,855 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 483,964 182
3 Watt FM Transmitter Rae XL Tkacik 252,029 80 *
50 Watt Amplifier 397,665 73
8 Note Tune Player 93,454 12 *
8 Watt Audio Amp 276,942 65 *
Aircraft Radio Communications Receiver 187,812 49 *
Crystal Radio 111,846 53 *
Digital Volume Control 260,435 46 *
Electronic Stethoscope 207,590 138 *
FET Audio Mixer 258,511 40
FM Transmitter 835,449 418
Guitar Fuzz Effect 168,827 51 *
Microphone Mixer Anatoly I. Shikhatov 178,807 25 *
Mono To Stereo Synthesizer oRbEq 72,864 16 *
One Tube Regenerative Radio NEW! 71,412 4 *
Op Amp Radio 285,583 80 *
Single Chip AM Radio NEW! 49,244 2 *
Single Chip FM Radio NEW! 88,802 0 *
Sound Level Meter 264,506 50 *
Stereo Tube Amplifier Weslee Kinsler 196,978 15 *
Tone Control 227,703 29
Transistor Organ 133,243 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 118,775 27 *
FM Telephone Bug 176,239 57
Phone Busy Indicator 135,999 24 *
Remote Telephone Ringer 76,396 3 *
Ringing Phone Light Flasher 150,491 32 *
Simple Phone Tap Derek Tombrello 299,440 98 *
Telephone Hold Button 74,873 9
Telephone Recorder 158,522 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.