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, May 27, 2017
12VDC To 120VAC Inverter65
Dual Polarity Power Supply59
Yesterday
Friday, May 26, 2017
Dual Polarity Power Supply103
12VDC To 120VAC Inverter88
Of All Time 12VDC To 120VAC Inverter1,378,553
FM Transmitter917,304

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 183,362 61 *
Car Alarm Arming Horn Beep Canceller bob 96,046 6 *
Wireless Auto Tachometer 290,198 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 127,266 29 *
Parallel (Printer) Port Interface 229,444 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 383,633 62 *
3 Channel Spectrum Analyzer 176,787 20
40W Fluorescent Lamp Inverter Bart Milnes 282,683 60 *
Adjustable Strobe Light 254,527 36
Black Light 216,973 29
Colour (Sound) Organ 239,389 36
Electronic Dice NEW! 145,059 9 *
Fantastic Atom Expander 153,875 25
Flash Slave Trigger 175,361 17 *
Infa-Red Remote Control 571,374 216 *
IR Remote Extender NEW! 84,623 2 *
IR Remote Jammer Carl 217,318 110 *
IR Remote Switch NEW! 115,005 9 *
LASER Transmitter/Receiver 354,752 92
LED Chaser 397,351 83 *
LED Metronome NEW! 75,490 3 *
LED Thermometer 168,933 22 *
Light/Dark Detector 267,123 89 *
Simple Colour Organ 105,582 10 *
Strobe Light 236,429 27 *
TRIAC Light Dimmer 445,131 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 304,900 122 *
Electromagnetic Levitator NEW! 105,468 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 843,091 214 *
AC Motor Speed Controller 326,843 29 *
Air Flow Detector 212,437 54 *
Digital Keypad Combination Lock 156,651 20
Low Voltage Alarm 184,614 58 *
Pine Racecar Victory Judge 70,225 1 *
Pulse Width Modulation DC Motor Control 599,128 93
Rain Detector 265,022 112 *
Simple Lie Detector 506,986 323
Simple Polarity Tester Dudley LeRoux 121,309 13 *
Simple Servo Controller 177,044 22 *
Simple Touch Switch NEW! 132,485 5 *
Simple Two Speed Contactor DC Motor Controller 169,244 21 *
Stepper Motor Controller 660,680 120 *
Time Delay Relay 499,739 88
Time Delay Relay II jawaharlal@excite.com 197,212 39 *
Touch Switch 248,500 51 *
Video Activated Relay 87,993 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 139,420 10 *
Water Detector With Sump/Bilge Pump Controller 113,391 18 *
Wire Loop Alarm Alex Meaden 170,853 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 256,929 25 *
12VDC To 120VAC Inverter 1,378,553 687
6V to 12V Converter 434,170 121
Automatic 12V Lead Acid Battery Charger 850,421 246
Automatic Load Sensing Power Switch 126,203 15 *
Car Battery Charger 805,238 159 *
Dual Polarity Power Supply 293,307 84 *
Fixed Voltage Power Supply 270,128 52 *
High Current Power Supply 286,526 64 *
High Voltage High Current Power Supply 214,385 35 *
LASER Power Supply 243,635 28
Portable CD Player Adapter For Car 171,276 12 *
Power Supply 671,933 259 *
Solid State Tesla Coil NEW! 109,553 3
Solid State Tesla Coil/High Voltage Generator 373,616 50
Transformerless Power Supply 409,130 117 *
Voltage Inverter 295,159 51 *
Voltage Inverter II 167,603 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 532,903 182
3 Watt FM Transmitter Rae XL Tkacik 286,283 81 *
50 Watt Amplifier 448,768 74
8 Note Tune Player 109,388 12 *
8 Watt Audio Amp 317,695 67 *
Aircraft Radio Communications Receiver 222,379 49 *
Crystal Radio 130,169 53 *
Digital Volume Control 287,157 47 *
Electronic Stethoscope 262,363 141 *
FET Audio Mixer 292,211 40
FM Transmitter 917,304 418
Guitar Fuzz Effect 196,661 52 *
Microphone Mixer Anatoly I. Shikhatov 205,381 26 *
Mono To Stereo Synthesizer oRbEq 92,025 18 *
One Tube Regenerative Radio NEW! 96,335 4 *
Op Amp Radio 331,373 80 *
Single Chip AM Radio NEW! 74,237 2 *
Single Chip FM Radio NEW! 124,261 1 *
Sound Level Meter 295,637 51 *
Stereo Tube Amplifier Weslee Kinsler 224,700 15 *
Tone Control 257,931 31
Transistor Organ 155,371 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 131,833 27 *
FM Telephone Bug 195,440 57
Phone Busy Indicator 173,681 24 *
Remote Telephone Ringer 88,060 3 *
Ringing Phone Light Flasher 173,071 33 *
Simple Phone Tap Derek Tombrello 323,105 98 *
Telephone Hold Button 91,889 9
Telephone Recorder 175,948 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.