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, September 01, 2014
22 Watt Audio Amplifier122
FET Audio Mixer104
Yesterday
Sunday, August 31, 2014
22 Watt Audio Amplifier319
FET Audio Mixer279
Of All Time 12VDC To 120VAC Inverter1,237,750
FM Transmitter833,030

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 164,835 60 *
Car Alarm Arming Horn Beep Canceller bob 83,730 6 *
Wireless Auto Tachometer 253,179 57

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 108,985 29 *
Parallel (Printer) Port Interface 210,029 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 348,028 61 *
3 Channel Spectrum Analyzer 147,194 19
40W Fluorescent Lamp Inverter Bart Milnes 254,976 60 *
Adjustable Strobe Light 224,604 36
Black Light 191,136 29
Colour (Sound) Organ 213,573 34
Electronic Dice NEW! 120,002 8 *
Fantastic Atom Expander 131,214 24
Flash Slave Trigger 155,968 17 *
Infa-Red Remote Control 501,057 216 *
IR Remote Extender NEW! 64,897 2 *
IR Remote Jammer Carl 192,077 110 *
IR Remote Switch NEW! 93,598 9 *
LASER Transmitter/Receiver 316,835 91
LED Chaser 344,300 83 *
LED Metronome NEW! 60,207 3 *
LED Thermometer 149,448 22 *
Light/Dark Detector 231,798 89 *
Simple Colour Organ 90,314 10 *
Strobe Light 209,764 27 *
TRIAC Light Dimmer 393,384 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 277,279 122 *
Electromagnetic Levitator NEW! 84,150 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 722,093 214 *
AC Motor Speed Controller 276,867 28 *
Air Flow Detector 182,837 54 *
Digital Keypad Combination Lock 132,563 20
Low Voltage Alarm 159,869 58 *
Pine Racecar Victory Judge 59,052 1 *
Pulse Width Modulation DC Motor Control 544,100 93
Rain Detector 231,697 111 *
Simple Lie Detector 455,806 320
Simple Polarity Tester Dudley LeRoux 100,059 13 *
Simple Servo Controller 149,827 22 *
Simple Touch Switch NEW! 106,429 5 *
Simple Two Speed Contactor DC Motor Controller 147,641 21 *
Stepper Motor Controller 596,464 120 *
Time Delay Relay 440,275 86
Time Delay Relay II jawaharlal@excite.com 174,663 39 *
Touch Switch 223,856 51 *
Video Activated Relay 71,656 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 119,816 9 *
Water Detector With Sump/Bilge Pump Controller 98,416 18 *
Wire Loop Alarm Alex Meaden 151,217 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 202,869 24 *
12VDC To 120VAC Inverter 1,237,750 684
6V to 12V Converter 376,817 121
Automatic 12V Lead Acid Battery Charger 723,449 238
Automatic Load Sensing Power Switch 107,041 14 *
Car Battery Charger 739,143 158 *
Dual Polarity Power Supply 257,846 84 *
Fixed Voltage Power Supply 240,041 52 *
High Current Power Supply 248,936 64 *
High Voltage High Current Power Supply 190,573 34 *
LASER Power Supply 212,023 28
Portable CD Player Adapter For Car 149,178 12 *
Power Supply 605,882 258 *
Solid State Tesla Coil NEW! 86,336 2
Solid State Tesla Coil/High Voltage Generator 321,020 49
Transformerless Power Supply 366,862 116 *
Voltage Inverter 262,577 51 *
Voltage Inverter II 148,357 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 479,841 182
3 Watt FM Transmitter Rae XL Tkacik 251,152 80 *
50 Watt Amplifier 396,720 73
8 Note Tune Player 93,175 12 *
8 Watt Audio Amp 276,008 64 *
Aircraft Radio Communications Receiver 186,887 49 *
Crystal Radio 111,498 53 *
Digital Volume Control 259,890 46 *
Electronic Stethoscope 206,804 138 *
FET Audio Mixer 255,120 40
FM Transmitter 833,030 418
Guitar Fuzz Effect 168,149 51 *
Microphone Mixer Anatoly I. Shikhatov 178,226 25 *
Mono To Stereo Synthesizer oRbEq 72,489 16 *
One Tube Regenerative Radio NEW! 70,776 4 *
Op Amp Radio 283,095 80 *
Single Chip AM Radio NEW! 48,902 2 *
Single Chip FM Radio NEW! 88,034 0 *
Sound Level Meter 263,931 50 *
Stereo Tube Amplifier Weslee Kinsler 196,175 15 *
Tone Control 227,063 29
Transistor Organ 132,815 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 118,505 27 *
FM Telephone Bug 175,747 57
Phone Busy Indicator 135,213 24 *
Remote Telephone Ringer 76,152 3 *
Ringing Phone Light Flasher 150,020 32 *
Simple Phone Tap Derek Tombrello 298,651 98 *
Telephone Hold Button 74,564 9
Telephone Recorder 158,183 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.