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, October 21, 2014
7 Segment LED Counter350
12VDC To 120VAC Inverter206
Yesterday
Monday, October 20, 2014
7 Segment LED Counter249
12VDC To 120VAC Inverter217
Of All Time 12VDC To 120VAC Inverter1,248,115
FM Transmitter839,298

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 166,402 60 *
Car Alarm Arming Horn Beep Canceller bob 84,424 6 *
Wireless Auto Tachometer 255,035 57

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 109,885 29 *
Parallel (Printer) Port Interface 211,286 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 350,489 61 *
3 Channel Spectrum Analyzer 148,823 19
40W Fluorescent Lamp Inverter Bart Milnes 256,738 60 *
Adjustable Strobe Light 226,410 36
Black Light 192,393 29
Colour (Sound) Organ 214,876 34
Electronic Dice NEW! 121,348 8 *
Fantastic Atom Expander 132,326 24
Flash Slave Trigger 156,961 17 *
Infa-Red Remote Control 510,176 216 *
IR Remote Extender NEW! 65,980 2 *
IR Remote Jammer Carl 193,626 110 *
IR Remote Switch NEW! 94,942 9 *
LASER Transmitter/Receiver 319,394 91
LED Chaser 352,869 83 *
LED Metronome NEW! 61,049 3 *
LED Thermometer 150,715 22 *
Light/Dark Detector 233,343 89 *
Simple Colour Organ 91,032 10 *
Strobe Light 211,888 27 *
TRIAC Light Dimmer 397,340 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 278,587 122 *
Electromagnetic Levitator NEW! 85,243 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 729,551 214 *
AC Motor Speed Controller 279,987 28 *
Air Flow Detector 185,072 54 *
Digital Keypad Combination Lock 133,799 20
Low Voltage Alarm 161,364 58 *
Pine Racecar Victory Judge 59,620 1 *
Pulse Width Modulation DC Motor Control 550,985 93
Rain Detector 233,360 111 *
Simple Lie Detector 459,794 320
Simple Polarity Tester Dudley LeRoux 101,139 13 *
Simple Servo Controller 152,170 22 *
Simple Touch Switch NEW! 108,194 5 *
Simple Two Speed Contactor DC Motor Controller 148,965 21 *
Stepper Motor Controller 601,303 120 *
Time Delay Relay 445,044 86
Time Delay Relay II jawaharlal@excite.com 176,031 39 *
Touch Switch 225,265 51 *
Video Activated Relay 72,659 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 120,998 9 *
Water Detector With Sump/Bilge Pump Controller 99,281 18 *
Wire Loop Alarm Alex Meaden 152,359 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 207,075 24 *
12VDC To 120VAC Inverter 1,248,115 684
6V to 12V Converter 380,303 121
Automatic 12V Lead Acid Battery Charger 732,625 238
Automatic Load Sensing Power Switch 108,047 14 *
Car Battery Charger 743,101 158 *
Dual Polarity Power Supply 259,899 84 *
Fixed Voltage Power Supply 242,137 52 *
High Current Power Supply 251,204 64 *
High Voltage High Current Power Supply 191,963 34 *
LASER Power Supply 213,934 28
Portable CD Player Adapter For Car 150,271 12 *
Power Supply 612,081 258 *
Solid State Tesla Coil NEW! 87,805 2
Solid State Tesla Coil/High Voltage Generator 324,958 49
Transformerless Power Supply 369,844 116 *
Voltage Inverter 264,597 51 *
Voltage Inverter II 149,830 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 487,068 182
3 Watt FM Transmitter Rae XL Tkacik 253,426 80 *
50 Watt Amplifier 399,437 73
8 Note Tune Player 93,990 12 *
8 Watt Audio Amp 278,661 65 *
Aircraft Radio Communications Receiver 189,131 49 *
Crystal Radio 112,464 53 *
Digital Volume Control 261,399 46 *
Electronic Stethoscope 208,844 138 *
FET Audio Mixer 260,386 40
FM Transmitter 839,298 418
Guitar Fuzz Effect 169,999 51 *
Microphone Mixer Anatoly I. Shikhatov 179,943 25 *
Mono To Stereo Synthesizer oRbEq 73,713 16 *
One Tube Regenerative Radio NEW! 72,317 4 *
Op Amp Radio 288,517 80 *
Single Chip AM Radio NEW! 49,836 2 *
Single Chip FM Radio NEW! 90,005 0 *
Sound Level Meter 265,606 50 *
Stereo Tube Amplifier Weslee Kinsler 199,191 15 *
Tone Control 228,823 29
Transistor Organ 134,003 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 119,272 27 *
FM Telephone Bug 177,300 57
Phone Busy Indicator 137,339 24 *
Remote Telephone Ringer 76,805 3 *
Ringing Phone Light Flasher 151,424 32 *
Simple Phone Tap Derek Tombrello 300,558 98 *
Telephone Hold Button 75,469 9
Telephone Recorder 159,146 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.