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
Friday, November 27, 2020
Fixed Voltage Power Supply19
Simple Phone Tap14
Yesterday
Thursday, November 26, 2020
12VDC To 120VAC Inverter39
6V to 12V Converter39
Of All Time 12VDC To 120VAC Inverter1,474,702
FM Transmitter973,633

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 212,815 61 *
Car Alarm Arming Horn Beep Canceller bob 123,825 6 *
Wireless Auto Tachometer 326,333 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 148,687 29 *
Parallel (Printer) Port Interface 266,914 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 426,866 63 *
3 Channel Spectrum Analyzer 206,178 20
40W Fluorescent Lamp Inverter Bart Milnes 314,918 60 *
Adjustable Strobe Light 291,053 36
Black Light 256,309 29
Colour (Sound) Organ 273,242 36
Electronic Dice NEW! 174,311 10 *
Fantastic Atom Expander 187,471 25
Flash Slave Trigger 205,086 18 *
Infa-Red Remote Control 614,939 216 *
IR Remote Extender NEW! 116,809 2 *
IR Remote Jammer Carl 246,863 110 *
IR Remote Switch NEW! 144,663 9 *
LASER Transmitter/Receiver 392,691 92
LED Chaser 428,917 83 *
LED Metronome NEW! 90,646 3 *
LED Thermometer 194,657 22 *
Light/Dark Detector 293,260 90 *
Simple Colour Organ 126,800 10 *
Strobe Light 261,265 27 *
TRIAC Light Dimmer 534,411 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 343,074 122 *
Electromagnetic Levitator NEW! 131,779 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 899,341 214 *
AC Motor Speed Controller 368,996 29 *
Air Flow Detector 238,916 54 *
Digital Keypad Combination Lock 184,270 20
Low Voltage Alarm 213,776 58 *
Pine Racecar Victory Judge 92,573 1 *
Pulse Width Modulation DC Motor Control 632,264 94
Rain Detector 291,779 112 *
Simple Lie Detector 544,801 323
Simple Polarity Tester Dudley LeRoux 151,331 13 *
Simple Servo Controller 207,203 22 *
Simple Touch Switch NEW! 156,912 5 *
Simple Two Speed Contactor DC Motor Controller 192,233 21 *
Stepper Motor Controller 722,397 120 *
Time Delay Relay 540,483 88
Time Delay Relay II jawaharlal@excite.com 229,690 39 *
Touch Switch 276,033 51 *
Video Activated Relay 110,400 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 166,517 10 *
Water Detector With Sump/Bilge Pump Controller 139,371 18 *
Wire Loop Alarm Alex Meaden 193,690 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 296,919 25 *
12VDC To 120VAC Inverter 1,474,702 689
6V to 12V Converter 504,953 121
Automatic 12V Lead Acid Battery Charger 911,761 248
Automatic Load Sensing Power Switch 152,526 16 *
Car Battery Charger 862,339 159 *
Dual Polarity Power Supply 356,676 84 *
Fixed Voltage Power Supply 295,831 52 *
High Current Power Supply 320,302 66 *
High Voltage High Current Power Supply 239,072 35 *
LASER Power Supply 279,203 28
Portable CD Player Adapter For Car 197,887 12 *
Power Supply 718,662 259 *
Solid State Tesla Coil NEW! 132,608 4
Solid State Tesla Coil/High Voltage Generator 421,215 50
Transformerless Power Supply 446,726 117 *
Voltage Inverter 319,599 51 *
Voltage Inverter II 188,311 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 568,926 182
3 Watt FM Transmitter Rae XL Tkacik 317,294 83 *
50 Watt Amplifier 490,012 74
8 Note Tune Player 129,610 12 *
8 Watt Audio Amp 354,547 67 *
Aircraft Radio Communications Receiver 260,350 49 *
Crystal Radio 149,376 53 *
Digital Volume Control 317,359 47 *
Electronic Stethoscope 296,479 141 *
FET Audio Mixer 326,611 41
FM Transmitter 973,633 420
Guitar Fuzz Effect 229,832 52 *
Microphone Mixer Anatoly I. Shikhatov 236,064 26 *
Mono To Stereo Synthesizer oRbEq 119,037 18 *
One Tube Regenerative Radio NEW! 121,723 4 *
Op Amp Radio 368,121 80 *
Single Chip AM Radio NEW! 89,907 2 *
Single Chip FM Radio NEW! 156,558 1 *
Sound Level Meter 326,511 51 *
Stereo Tube Amplifier Weslee Kinsler 253,501 15 *
Tone Control 292,232 31
Transistor Organ 183,552 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 152,170 27 *
FM Telephone Bug 224,218 57
Phone Busy Indicator 202,406 24 *
Remote Telephone Ringer 107,440 3 *
Ringing Phone Light Flasher 200,933 35 *
Simple Phone Tap Derek Tombrello 371,326 98 *
Telephone Hold Button 117,077 10
Telephone Recorder 203,764 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.