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, September 25, 2020
AC Motor Speed Controller44
Car Battery Charger42
Yesterday
Thursday, September 24, 2020
12VDC To 120VAC Inverter41
Car Battery Charger31
Of All Time 12VDC To 120VAC Inverter1,471,135
FM Transmitter971,831

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 211,836 61 *
Car Alarm Arming Horn Beep Canceller bob 122,906 6 *
Wireless Auto Tachometer 325,081 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 147,955 29 *
Parallel (Printer) Port Interface 265,620 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 425,361 63 *
3 Channel Spectrum Analyzer 205,172 20
40W Fluorescent Lamp Inverter Bart Milnes 313,820 60 *
Adjustable Strobe Light 289,744 36
Black Light 254,692 29
Colour (Sound) Organ 271,783 36
Electronic Dice NEW! 173,183 10 *
Fantastic Atom Expander 186,279 25
Flash Slave Trigger 203,982 18 *
Infa-Red Remote Control 613,611 216 *
IR Remote Extender NEW! 115,723 2 *
IR Remote Jammer Carl 245,938 110 *
IR Remote Switch NEW! 143,577 9 *
LASER Transmitter/Receiver 391,097 92
LED Chaser 427,754 83 *
LED Metronome NEW! 90,069 3 *
LED Thermometer 193,801 22 *
Light/Dark Detector 292,311 90 *
Simple Colour Organ 126,074 10 *
Strobe Light 260,309 27 *
TRIAC Light Dimmer 533,366 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 341,331 122 *
Electromagnetic Levitator NEW! 130,909 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 897,695 214 *
AC Motor Speed Controller 367,593 29 *
Air Flow Detector 237,999 54 *
Digital Keypad Combination Lock 183,450 20
Low Voltage Alarm 212,815 58 *
Pine Racecar Victory Judge 91,896 1 *
Pulse Width Modulation DC Motor Control 631,028 94
Rain Detector 290,886 112 *
Simple Lie Detector 543,689 323
Simple Polarity Tester Dudley LeRoux 150,327 13 *
Simple Servo Controller 206,238 22 *
Simple Touch Switch NEW! 156,081 5 *
Simple Two Speed Contactor DC Motor Controller 191,446 21 *
Stepper Motor Controller 720,748 120 *
Time Delay Relay 539,433 88
Time Delay Relay II jawaharlal@excite.com 228,658 39 *
Touch Switch 275,116 51 *
Video Activated Relay 109,656 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 165,561 10 *
Water Detector With Sump/Bilge Pump Controller 137,706 18 *
Wire Loop Alarm Alex Meaden 192,934 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 295,769 25 *
12VDC To 120VAC Inverter 1,471,135 689
6V to 12V Converter 503,092 121
Automatic 12V Lead Acid Battery Charger 910,044 247
Automatic Load Sensing Power Switch 151,438 16 *
Car Battery Charger 860,751 159 *
Dual Polarity Power Supply 355,733 84 *
Fixed Voltage Power Supply 294,849 52 *
High Current Power Supply 319,134 65 *
High Voltage High Current Power Supply 238,160 35 *
LASER Power Supply 278,106 28
Portable CD Player Adapter For Car 196,938 12 *
Power Supply 717,489 259 *
Solid State Tesla Coil NEW! 131,810 4
Solid State Tesla Coil/High Voltage Generator 419,676 50
Transformerless Power Supply 445,603 117 *
Voltage Inverter 318,530 51 *
Voltage Inverter II 187,537 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 567,820 182
3 Watt FM Transmitter Rae XL Tkacik 316,200 82 *
50 Watt Amplifier 488,893 74
8 Note Tune Player 128,821 12 *
8 Watt Audio Amp 353,343 67 *
Aircraft Radio Communications Receiver 259,226 49 *
Crystal Radio 148,827 53 *
Digital Volume Control 316,388 47 *
Electronic Stethoscope 295,086 141 *
FET Audio Mixer 325,488 41
FM Transmitter 971,831 419
Guitar Fuzz Effect 228,698 52 *
Microphone Mixer Anatoly I. Shikhatov 235,066 26 *
Mono To Stereo Synthesizer oRbEq 118,029 18 *
One Tube Regenerative Radio NEW! 120,809 4 *
Op Amp Radio 366,868 80 *
Single Chip AM Radio NEW! 89,345 2 *
Single Chip FM Radio NEW! 155,541 1 *
Sound Level Meter 325,486 51 *
Stereo Tube Amplifier Weslee Kinsler 252,523 15 *
Tone Control 290,986 31
Transistor Organ 182,477 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 151,372 27 *
FM Telephone Bug 223,343 57
Phone Busy Indicator 201,573 24 *
Remote Telephone Ringer 106,597 3 *
Ringing Phone Light Flasher 199,919 35 *
Simple Phone Tap Derek Tombrello 370,441 98 *
Telephone Hold Button 116,277 10
Telephone Recorder 202,819 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.