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
Monday, April 21, 2014
Automatic 12V Lead Acid Battery Charger142
12VDC To 120VAC Inverter132
Yesterday
Sunday, April 20, 2014
12VDC To 120VAC Inverter305
Automatic 12V Lead Acid Battery Charger221
Of All Time 12VDC To 120VAC Inverter1,205,164
FM Transmitter813,880

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 160,321 60 *
Car Alarm Arming Horn Beep Canceller bob 81,336 6 *
Wireless Auto Tachometer 247,597 57

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 106,533 29 *
Parallel (Printer) Port Interface 206,736 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 341,066 61 *
3 Channel Spectrum Analyzer 141,688 19
40W Fluorescent Lamp Inverter Bart Milnes 249,337 60 *
Adjustable Strobe Light 220,094 36
Black Light 187,484 29
Colour (Sound) Organ 210,068 34
Electronic Dice NEW! 115,722 8 *
Fantastic Atom Expander 126,898 24
Flash Slave Trigger 153,316 17 *
Infa-Red Remote Control 489,015 216 *
IR Remote Extender NEW! 61,468 2 *
IR Remote Jammer Carl 187,986 109 *
IR Remote Switch NEW! 90,000 9 *
LASER Transmitter/Receiver 309,435 91
LED Chaser 337,000 83 *
LED Metronome NEW! 58,194 3 *
LED Thermometer 146,620 22 *
Light/Dark Detector 227,874 89 *
Simple Colour Organ 88,327 10 *
Strobe Light 206,740 27 *
TRIAC Light Dimmer 380,120 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 273,690 122 *
Electromagnetic Levitator NEW! 80,965 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 708,154 212 *
AC Motor Speed Controller 267,683 28 *
Air Flow Detector 175,202 54 *
Digital Keypad Combination Lock 128,719 20
Low Voltage Alarm 154,947 58 *
Pine Racecar Victory Judge 57,124 1 *
Pulse Width Modulation DC Motor Control 531,970 92
Rain Detector 226,895 110 *
Simple Lie Detector 445,384 319
Simple Polarity Tester Dudley LeRoux 96,518 13 *
Simple Servo Controller 143,935 22 *
Simple Touch Switch NEW! 101,666 5 *
Simple Two Speed Contactor DC Motor Controller 144,385 21 *
Stepper Motor Controller 585,439 120 *
Time Delay Relay 426,934 85
Time Delay Relay II jawaharlal@excite.com 170,770 39 *
Touch Switch 219,953 51 *
Video Activated Relay 68,724 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 116,030 9 *
Water Detector With Sump/Bilge Pump Controller 95,681 18 *
Wire Loop Alarm Alex Meaden 148,295 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 191,009 23 *
12VDC To 120VAC Inverter 1,205,164 682
6V to 12V Converter 366,701 121
Automatic 12V Lead Acid Battery Charger 695,996 236
Automatic Load Sensing Power Switch 104,139 14 *
Car Battery Charger 728,841 158 *
Dual Polarity Power Supply 251,563 84 *
Fixed Voltage Power Supply 233,405 52 *
High Current Power Supply 241,283 64 *
High Voltage High Current Power Supply 186,910 34 *
LASER Power Supply 207,084 28
Portable CD Player Adapter For Car 145,809 12 *
Power Supply 592,732 258 *
Solid State Tesla Coil NEW! 82,875 2
Solid State Tesla Coil/High Voltage Generator 310,604 49
Transformerless Power Supply 358,511 116 *
Voltage Inverter 256,618 51 *
Voltage Inverter II 144,516 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 450,242 182
3 Watt FM Transmitter Rae XL Tkacik 244,711 77 *
50 Watt Amplifier 389,789 73
8 Note Tune Player 91,133 12 *
8 Watt Audio Amp 268,610 63 *
Aircraft Radio Communications Receiver 180,184 48 *
Crystal Radio 108,948 53 *
Digital Volume Control 255,697 46 *
Electronic Stethoscope 201,024 138 *
FET Audio Mixer 229,747 40
FM Transmitter 813,880 414
Guitar Fuzz Effect 162,907 51 *
Microphone Mixer Anatoly I. Shikhatov 173,026 25 *
Mono To Stereo Synthesizer oRbEq 69,315 16 *
One Tube Regenerative Radio NEW! 65,575 4 *
Op Amp Radio 274,090 80 *
Single Chip AM Radio NEW! 46,611 2 *
Single Chip FM Radio NEW! 83,375 0 *
Sound Level Meter 259,157 50 *
Stereo Tube Amplifier Weslee Kinsler 188,475 15 *
Tone Control 222,392 29
Transistor Organ 128,987 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 115,873 27 *
FM Telephone Bug 172,218 57
Phone Busy Indicator 128,921 22 *
Remote Telephone Ringer 74,493 3 *
Ringing Phone Light Flasher 145,504 32 *
Simple Phone Tap Derek Tombrello 292,466 98 *
Telephone Hold Button 72,281 9
Telephone Recorder 154,842 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.