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
Wednesday, October 24, 2018
3 Watt FM Transmitter7
12V To 24V DC-DC Converter6
Yesterday
Tuesday, October 23, 2018
Dual Polarity Power Supply169
Stepper Motor Controller142
Of All Time 12VDC To 120VAC Inverter1,420,379
FM Transmitter939,798

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 192,449 61 *
Car Alarm Arming Horn Beep Canceller bob 104,015 6 *
Wireless Auto Tachometer 299,351 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 134,140 29 *
Parallel (Printer) Port Interface 238,030 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 395,357 63 *
3 Channel Spectrum Analyzer 188,693 20
40W Fluorescent Lamp Inverter Bart Milnes 292,140 60 *
Adjustable Strobe Light 266,500 36
Black Light 228,417 29
Colour (Sound) Organ 249,927 36
Electronic Dice NEW! 152,792 10 *
Fantastic Atom Expander 164,248 25
Flash Slave Trigger 184,422 18 *
Infa-Red Remote Control 585,704 216 *
IR Remote Extender NEW! 93,739 2 *
IR Remote Jammer Carl 228,267 110 *
IR Remote Switch NEW! 123,718 9 *
LASER Transmitter/Receiver 366,498 92
LED Chaser 409,817 83 *
LED Metronome NEW! 82,215 3 *
LED Thermometer 178,703 22 *
Light/Dark Detector 276,884 90 *
Simple Colour Organ 113,128 10 *
Strobe Light 245,350 27 *
TRIAC Light Dimmer 457,893 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 314,296 122 *
Electromagnetic Levitator NEW! 115,229 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 862,686 214 *
AC Motor Speed Controller 342,789 29 *
Air Flow Detector 222,361 54 *
Digital Keypad Combination Lock 165,708 20
Low Voltage Alarm 196,102 58 *
Pine Racecar Victory Judge 77,517 1 *
Pulse Width Modulation DC Motor Control 612,547 93
Rain Detector 275,342 112 *
Simple Lie Detector 521,187 323
Simple Polarity Tester Dudley LeRoux 130,675 13 *
Simple Servo Controller 186,098 22 *
Simple Touch Switch NEW! 141,551 5 *
Simple Two Speed Contactor DC Motor Controller 176,778 21 *
Stepper Motor Controller 690,525 120 *
Time Delay Relay 516,075 88
Time Delay Relay II jawaharlal@excite.com 208,248 39 *
Touch Switch 259,085 51 *
Video Activated Relay 96,522 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 147,980 10 *
Water Detector With Sump/Bilge Pump Controller 122,146 18 *
Wire Loop Alarm Alex Meaden 179,061 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 271,419 25 *
12VDC To 120VAC Inverter 1,420,379 688
6V to 12V Converter 453,966 121
Automatic 12V Lead Acid Battery Charger 876,657 246
Automatic Load Sensing Power Switch 135,187 16 *
Car Battery Charger 829,519 159 *
Dual Polarity Power Supply 333,038 84 *
Fixed Voltage Power Supply 279,172 52 *
High Current Power Supply 296,765 65 *
High Voltage High Current Power Supply 222,743 35 *
LASER Power Supply 254,595 28
Portable CD Player Adapter For Car 180,949 12 *
Power Supply 690,605 259 *
Solid State Tesla Coil NEW! 120,332 4
Solid State Tesla Coil/High Voltage Generator 390,851 50
Transformerless Power Supply 420,333 117 *
Voltage Inverter 305,633 51 *
Voltage Inverter II 173,989 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 547,988 182
3 Watt FM Transmitter Rae XL Tkacik 297,443 82 *
50 Watt Amplifier 465,159 74
8 Note Tune Player 116,238 12 *
8 Watt Audio Amp 330,402 67 *
Aircraft Radio Communications Receiver 234,445 49 *
Crystal Radio 137,324 53 *
Digital Volume Control 297,853 47 *
Electronic Stethoscope 275,159 141 *
FET Audio Mixer 307,023 41
FM Transmitter 939,798 419
Guitar Fuzz Effect 207,168 52 *
Microphone Mixer Anatoly I. Shikhatov 216,135 26 *
Mono To Stereo Synthesizer oRbEq 99,518 18 *
One Tube Regenerative Radio NEW! 105,893 4 *
Op Amp Radio 346,096 80 *
Single Chip AM Radio NEW! 81,137 2 *
Single Chip FM Radio NEW! 134,817 1 *
Sound Level Meter 305,618 51 *
Stereo Tube Amplifier Weslee Kinsler 233,486 15 *
Tone Control 269,765 31
Transistor Organ 164,301 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 138,070 27 *
FM Telephone Bug 203,207 57
Phone Busy Indicator 185,420 24 *
Remote Telephone Ringer 93,902 3 *
Ringing Phone Light Flasher 183,077 34 *
Simple Phone Tap Derek Tombrello 331,754 98 *
Telephone Hold Button 98,534 10
Telephone Recorder 184,158 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.