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
Thursday, April 24, 2014
Automatic 12V Lead Acid Battery Charger26
Power Supply26
Yesterday
Wednesday, April 23, 2014
12VDC To 120VAC Inverter280
Automatic 12V Lead Acid Battery Charger269
Of All Time 12VDC To 120VAC Inverter1,205,922
FM Transmitter814,223

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 160,379 60 *
Car Alarm Arming Horn Beep Canceller bob 81,363 6 *
Wireless Auto Tachometer 247,679 57

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 106,563 29 *
Parallel (Printer) Port Interface 206,788 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 341,219 61 *
3 Channel Spectrum Analyzer 141,773 19
40W Fluorescent Lamp Inverter Bart Milnes 249,424 60 *
Adjustable Strobe Light 220,196 36
Black Light 187,545 29
Colour (Sound) Organ 210,135 34
Electronic Dice NEW! 115,828 8 *
Fantastic Atom Expander 126,969 24
Flash Slave Trigger 153,364 17 *
Infa-Red Remote Control 489,190 216 *
IR Remote Extender NEW! 61,543 2 *
IR Remote Jammer Carl 188,056 109 *
IR Remote Switch NEW! 90,077 9 *
LASER Transmitter/Receiver 309,629 91
LED Chaser 337,120 83 *
LED Metronome NEW! 58,249 3 *
LED Thermometer 146,686 22 *
Light/Dark Detector 227,959 89 *
Simple Colour Organ 88,351 10 *
Strobe Light 206,803 27 *
TRIAC Light Dimmer 380,360 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 273,739 122 *
Electromagnetic Levitator NEW! 81,012 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 708,479 212 *
AC Motor Speed Controller 267,878 28 *
Air Flow Detector 175,344 54 *
Digital Keypad Combination Lock 128,806 20
Low Voltage Alarm 155,026 58 *
Pine Racecar Victory Judge 57,167 1 *
Pulse Width Modulation DC Motor Control 532,342 92
Rain Detector 226,974 110 *
Simple Lie Detector 445,610 319
Simple Polarity Tester Dudley LeRoux 96,569 13 *
Simple Servo Controller 144,045 22 *
Simple Touch Switch NEW! 101,767 5 *
Simple Two Speed Contactor DC Motor Controller 144,474 21 *
Stepper Motor Controller 585,696 120 *
Time Delay Relay 427,222 85
Time Delay Relay II jawaharlal@excite.com 170,843 39 *
Touch Switch 220,035 51 *
Video Activated Relay 68,782 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 116,084 9 *
Water Detector With Sump/Bilge Pump Controller 95,728 18 *
Wire Loop Alarm Alex Meaden 148,346 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 191,279 23 *
12VDC To 120VAC Inverter 1,205,922 682
6V to 12V Converter 366,917 121
Automatic 12V Lead Acid Battery Charger 696,717 236
Automatic Load Sensing Power Switch 104,202 14 *
Car Battery Charger 729,083 158 *
Dual Polarity Power Supply 251,693 84 *
Fixed Voltage Power Supply 233,548 52 *
High Current Power Supply 241,435 64 *
High Voltage High Current Power Supply 186,987 34 *
LASER Power Supply 207,185 28
Portable CD Player Adapter For Car 145,864 12 *
Power Supply 592,982 258 *
Solid State Tesla Coil NEW! 82,945 2
Solid State Tesla Coil/High Voltage Generator 310,784 49
Transformerless Power Supply 358,686 116 *
Voltage Inverter 256,746 51 *
Voltage Inverter II 144,585 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 450,747 182
3 Watt FM Transmitter Rae XL Tkacik 244,824 77 *
50 Watt Amplifier 389,951 73
8 Note Tune Player 91,178 12 *
8 Watt Audio Amp 268,753 63 *
Aircraft Radio Communications Receiver 180,314 48 *
Crystal Radio 109,002 53 *
Digital Volume Control 255,786 46 *
Electronic Stethoscope 201,134 138 *
FET Audio Mixer 230,110 40
FM Transmitter 814,223 414
Guitar Fuzz Effect 163,007 51 *
Microphone Mixer Anatoly I. Shikhatov 173,099 25 *
Mono To Stereo Synthesizer oRbEq 69,350 16 *
One Tube Regenerative Radio NEW! 65,667 4 *
Op Amp Radio 274,223 80 *
Single Chip AM Radio NEW! 46,655 2 *
Single Chip FM Radio NEW! 83,471 0 *
Sound Level Meter 259,244 50 *
Stereo Tube Amplifier Weslee Kinsler 188,615 15 *
Tone Control 222,500 29
Transistor Organ 129,048 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 115,922 27 *
FM Telephone Bug 172,283 57
Phone Busy Indicator 129,043 22 *
Remote Telephone Ringer 74,516 3 *
Ringing Phone Light Flasher 145,576 32 *
Simple Phone Tap Derek Tombrello 292,600 98 *
Telephone Hold Button 72,311 9
Telephone Recorder 154,909 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.