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, March 04, 2015
Automatic 12V Lead Acid Battery Charger86
7 Segment LED Counter61
Yesterday
Tuesday, March 03, 2015
Automatic 12V Lead Acid Battery Charger214
TRIAC Light Dimmer203
Of All Time 12VDC To 120VAC Inverter1,274,444
FM Transmitter859,189

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 169,962 61 *
Car Alarm Arming Horn Beep Canceller bob 86,530 6 *
Wireless Auto Tachometer 270,920 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 113,326 29 *
Parallel (Printer) Port Interface 214,453 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 356,370 62 *
3 Channel Spectrum Analyzer 153,503 19
40W Fluorescent Lamp Inverter Bart Milnes 261,494 60 *
Adjustable Strobe Light 231,616 36
Black Light 196,841 29
Colour (Sound) Organ 219,099 34
Electronic Dice NEW! 125,773 8 *
Fantastic Atom Expander 136,463 24
Flash Slave Trigger 159,923 17 *
Infa-Red Remote Control 532,504 216 *
IR Remote Extender NEW! 69,116 2 *
IR Remote Jammer Carl 198,215 110 *
IR Remote Switch NEW! 98,863 9 *
LASER Transmitter/Receiver 325,899 91
LED Chaser 370,201 83 *
LED Metronome NEW! 63,353 3 *
LED Thermometer 154,279 22 *
Light/Dark Detector 237,085 89 *
Simple Colour Organ 93,235 10 *
Strobe Light 215,211 27 *
TRIAC Light Dimmer 407,725 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 282,242 122 *
Electromagnetic Levitator NEW! 88,824 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 778,299 214 *
AC Motor Speed Controller 291,153 29 *
Air Flow Detector 190,937 54 *
Digital Keypad Combination Lock 141,468 20
Low Voltage Alarm 164,947 58 *
Pine Racecar Victory Judge 61,196 1 *
Pulse Width Modulation DC Motor Control 560,448 93
Rain Detector 241,471 111 *
Simple Lie Detector 472,059 321
Simple Polarity Tester Dudley LeRoux 104,121 13 *
Simple Servo Controller 158,441 22 *
Simple Touch Switch NEW! 113,154 5 *
Simple Two Speed Contactor DC Motor Controller 153,191 21 *
Stepper Motor Controller 615,441 120 *
Time Delay Relay 457,040 86
Time Delay Relay II jawaharlal@excite.com 180,103 39 *
Touch Switch 229,714 51 *
Video Activated Relay 75,157 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 124,335 9 *
Water Detector With Sump/Bilge Pump Controller 101,961 18 *
Wire Loop Alarm Alex Meaden 155,347 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 217,540 24 *
12VDC To 120VAC Inverter 1,274,444 684
6V to 12V Converter 389,443 121
Automatic 12V Lead Acid Battery Charger 760,570 239
Automatic Load Sensing Power Switch 110,978 14 *
Car Battery Charger 756,561 158 *
Dual Polarity Power Supply 266,036 84 *
Fixed Voltage Power Supply 247,527 52 *
High Current Power Supply 257,131 64 *
High Voltage High Current Power Supply 195,594 34 *
LASER Power Supply 219,270 28
Portable CD Player Adapter For Car 153,372 12 *
Power Supply 626,500 258 *
Solid State Tesla Coil NEW! 92,034 3
Solid State Tesla Coil/High Voltage Generator 335,406 49
Transformerless Power Supply 378,072 116 *
Voltage Inverter 269,733 51 *
Voltage Inverter II 153,673 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 497,665 182
3 Watt FM Transmitter Rae XL Tkacik 259,151 80 *
50 Watt Amplifier 411,791 73
8 Note Tune Player 96,449 12 *
8 Watt Audio Amp 286,957 66 *
Aircraft Radio Communications Receiver 195,670 49 *
Crystal Radio 115,420 53 *
Digital Volume Control 265,703 46 *
Electronic Stethoscope 228,214 139 *
FET Audio Mixer 266,974 40
FM Transmitter 859,189 418
Guitar Fuzz Effect 175,228 51 *
Microphone Mixer Anatoly I. Shikhatov 184,109 25 *
Mono To Stereo Synthesizer oRbEq 77,371 17 *
One Tube Regenerative Radio NEW! 76,863 4 *
Op Amp Radio 296,883 80 *
Single Chip AM Radio NEW! 52,269 2 *
Single Chip FM Radio NEW! 97,170 0 *
Sound Level Meter 270,688 51 *
Stereo Tube Amplifier Weslee Kinsler 207,949 15 *
Tone Control 234,766 30
Transistor Organ 137,560 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 121,382 27 *
FM Telephone Bug 180,943 57
Phone Busy Indicator 143,431 24 *
Remote Telephone Ringer 78,388 3 *
Ringing Phone Light Flasher 154,982 32 *
Simple Phone Tap Derek Tombrello 305,115 98 *
Telephone Hold Button 77,588 9
Telephone Recorder 162,080 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.