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, December 21, 2024		 12VDC To 120VAC Inverter20
Voltage Inverter19
Yesterday
Friday, December 20, 2024		 One Tube Regenerative Radio51
12VDC To 120VAC Inverter43
Of All Time 12VDC To 120VAC Inverter1,540,975
FM Transmitter1,016,804

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 229,599 61 *
Car Alarm Arming Horn Beep Canceller bob 139,023 6 *
Wireless Auto Tachometer 346,179 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 162,309 29 *
Parallel (Printer) Port Interface 290,466 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 451,440 63 *
3 Channel Spectrum Analyzer 225,481 20
40W Fluorescent Lamp Inverter Bart Milnes 333,024 60 *
Adjustable Strobe Light 312,742 36
Black Light 285,500 29
Colour (Sound) Organ 294,324 36
Electronic Dice NEW! 192,102 10 *
Fantastic Atom Expander 205,584 25
Flash Slave Trigger 224,535 18 *
Infa-Red Remote Control 641,053 216 *
IR Remote Extender NEW! 135,758 3 *
IR Remote Jammer Carl 269,805 110 *
IR Remote Switch NEW! 160,226 9 *
LASER Transmitter/Receiver 421,191 92
LED Chaser 450,194 83 *
LED Metronome NEW! 102,242 3 *
LED Thermometer 209,633 22 *
Light/Dark Detector 308,800 90 *
Simple Colour Organ 139,992 11 *
Strobe Light 278,645 27 *
TRIAC Light Dimmer 557,357 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 363,876 122 *
Electromagnetic Levitator NEW! 147,171 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 927,324 214 *
AC Motor Speed Controller 396,563 29 *
Air Flow Detector 254,798 54 *
Digital Keypad Combination Lock 204,878 20
Low Voltage Alarm 232,258 58 *
Pine Racecar Victory Judge 105,205 1 *
Pulse Width Modulation DC Motor Control 659,175 94
Rain Detector 308,065 112 *
Simple Lie Detector 568,749 323
Simple Polarity Tester Dudley LeRoux 168,378 13 *
Simple Servo Controller 224,714 22 *
Simple Touch Switch NEW! 172,948 6 *
Simple Two Speed Contactor DC Motor Controller 208,314 21 *
Stepper Motor Controller 753,326 120 *
Time Delay Relay 559,504 88
Time Delay Relay II jawaharlal@excite.com 250,705 39 *
Touch Switch 293,108 51 *
Video Activated Relay 124,565 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 184,803 10 *
Water Detector With Sump/Bilge Pump Controller 155,985 18 *
Wire Loop Alarm Alex Meaden 208,502 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 321,336 25 *
12VDC To 120VAC Inverter 1,540,975 691
6V to 12V Converter 532,331 121
Automatic 12V Lead Acid Battery Charger 942,041 248
Automatic Load Sensing Power Switch 170,685 16 *
Car Battery Charger 887,699 159 *
Dual Polarity Power Supply 375,079 84 *
Fixed Voltage Power Supply 315,109 52 *
High Current Power Supply 344,266 66 *
High Voltage High Current Power Supply 267,620 35 *
LASER Power Supply 300,170 28
Portable CD Player Adapter For Car 215,364 12 *
Power Supply 743,696 259 *
Solid State Tesla Coil NEW! 150,257 4
Solid State Tesla Coil/High Voltage Generator 449,434 51
Transformerless Power Supply 467,256 117 *
Voltage Inverter 344,734 51 *
Voltage Inverter II 207,001 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 589,359 182
3 Watt FM Transmitter Rae XL Tkacik 340,520 83 *
50 Watt Amplifier 512,720 74
8 Note Tune Player 143,745 12 *
8 Watt Audio Amp 378,260 67 *
Aircraft Radio Communications Receiver 283,466 49 *
Crystal Radio 162,593 53 *
Digital Volume Control 342,593 47 *
Electronic Stethoscope 325,852 142 *
FET Audio Mixer 347,530 41
FM Transmitter 1,016,804 420
Guitar Fuzz Effect 251,543 54 *
Microphone Mixer Anatoly I. Shikhatov 254,351 26 *
Mono To Stereo Synthesizer oRbEq 137,718 18 *
One Tube Regenerative Radio NEW! 149,176 4 *
Op Amp Radio 394,475 80 *
Single Chip AM Radio NEW! 103,069 3 *
Single Chip FM Radio NEW! 176,508 1 *
Sound Level Meter 345,764 51 *
Stereo Tube Amplifier Weslee Kinsler 272,023 15 *
Tone Control 313,746 31
Transistor Organ 203,670 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 166,403 27 *
FM Telephone Bug 237,958 57
Phone Busy Indicator 216,822 24 *
Remote Telephone Ringer 120,942 3 *
Ringing Phone Light Flasher 222,361 35 *
Simple Phone Tap Derek Tombrello 386,727 98 *
Telephone Hold Button 131,900 10
Telephone Recorder 219,671 55 *

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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.