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, February 08, 2016
Automatic 12V Lead Acid Battery Charger131
50 Watt Amplifier81
Yesterday
Sunday, February 07, 2016
Automatic 12V Lead Acid Battery Charger129
Time Delay Relay117
Of All Time 12VDC To 120VAC Inverter1,327,012
FM Transmitter888,284

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 176,616 61 *
Car Alarm Arming Horn Beep Canceller bob 90,741 6 *
Wireless Auto Tachometer 280,649 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 119,768 29 *
Parallel (Printer) Port Interface 221,952 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 369,357 62 *
3 Channel Spectrum Analyzer 164,769 20
40W Fluorescent Lamp Inverter Bart Milnes 271,784 60 *
Adjustable Strobe Light 242,945 36
Black Light 206,381 29
Colour (Sound) Organ 229,272 35
Electronic Dice NEW! 134,588 8 *
Fantastic Atom Expander 144,313 25
Flash Slave Trigger 167,167 17 *
Infa-Red Remote Control 556,207 216 *
IR Remote Extender NEW! 76,640 2 *
IR Remote Jammer Carl 207,698 110 *
IR Remote Switch NEW! 107,062 9 *
LASER Transmitter/Receiver 339,632 91
LED Chaser 385,237 83 *
LED Metronome NEW! 68,962 3 *
LED Thermometer 160,951 22 *
Light/Dark Detector 249,551 89 *
Simple Colour Organ 99,503 10 *
Strobe Light 227,854 27 *
TRIAC Light Dimmer 430,440 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 295,474 122 *
Electromagnetic Levitator NEW! 95,837 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 816,399 214 *
AC Motor Speed Controller 307,989 29 *
Air Flow Detector 200,158 54 *
Digital Keypad Combination Lock 148,746 20
Low Voltage Alarm 173,428 58 *
Pine Racecar Victory Judge 65,000 1 *
Pulse Width Modulation DC Motor Control 581,448 93
Rain Detector 255,116 112 *
Simple Lie Detector 489,694 323
Simple Polarity Tester Dudley LeRoux 112,510 13 *
Simple Servo Controller 167,586 22 *
Simple Touch Switch NEW! 123,170 5 *
Simple Two Speed Contactor DC Motor Controller 160,801 21 *
Stepper Motor Controller 638,019 120 *
Time Delay Relay 478,828 86
Time Delay Relay II jawaharlal@excite.com 187,432 39 *
Touch Switch 239,013 51 *
Video Activated Relay 80,922 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 130,902 10 *
Water Detector With Sump/Bilge Pump Controller 107,263 18 *
Wire Loop Alarm Alex Meaden 162,497 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 237,014 25 *
12VDC To 120VAC Inverter 1,327,012 686
6V to 12V Converter 412,849 121
Automatic 12V Lead Acid Battery Charger 811,313 243
Automatic Load Sensing Power Switch 117,388 15 *
Car Battery Charger 780,378 159 *
Dual Polarity Power Supply 277,909 84 *
Fixed Voltage Power Supply 258,742 52 *
High Current Power Supply 273,582 64 *
High Voltage High Current Power Supply 204,096 35 *
LASER Power Supply 230,020 28
Portable CD Player Adapter For Car 160,757 12 *
Power Supply 648,326 259 *
Solid State Tesla Coil NEW! 100,320 3
Solid State Tesla Coil/High Voltage Generator 352,573 49
Transformerless Power Supply 394,006 116 *
Voltage Inverter 281,214 51 *
Voltage Inverter II 160,991 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 515,374 182
3 Watt FM Transmitter Rae XL Tkacik 271,671 81 *
50 Watt Amplifier 428,183 74
8 Note Tune Player 102,375 12 *
8 Watt Audio Amp 301,848 67 *
Aircraft Radio Communications Receiver 208,274 49 *
Crystal Radio 122,318 53 *
Digital Volume Control 275,500 46 *
Electronic Stethoscope 246,685 141 *
FET Audio Mixer 278,733 40
FM Transmitter 888,284 418
Guitar Fuzz Effect 185,283 52 *
Microphone Mixer Anatoly I. Shikhatov 193,788 25 *
Mono To Stereo Synthesizer oRbEq 84,410 17 *
One Tube Regenerative Radio NEW! 85,313 4 *
Op Amp Radio 316,102 80 *
Single Chip AM Radio NEW! 66,970 2 *
Single Chip FM Radio NEW! 112,716 0 *
Sound Level Meter 284,523 51 *
Stereo Tube Amplifier Weslee Kinsler 215,774 15 *
Tone Control 245,388 31
Transistor Organ 146,049 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 126,082 27 *
FM Telephone Bug 188,099 57
Phone Busy Indicator 156,214 24 *
Remote Telephone Ringer 82,434 3 *
Ringing Phone Light Flasher 162,752 33 *
Simple Phone Tap Derek Tombrello 313,768 98 *
Telephone Hold Button 83,361 9
Telephone Recorder 168,079 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.