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
Thursday, January 21, 2021
12VDC To 120VAC Inverter51
Automatic 12V Lead Acid Battery Charger40
Yesterday
Wednesday, January 20, 2021
LED Chaser48
12VDC To 120VAC Inverter47
Of All Time 12VDC To 120VAC Inverter1,478,595
FM Transmitter975,391

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 213,907 61 *
Car Alarm Arming Horn Beep Canceller bob 124,891 6 *
Wireless Auto Tachometer 327,610 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 149,490 29 *
Parallel (Printer) Port Interface 268,291 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 428,752 63 *
3 Channel Spectrum Analyzer 207,207 20
40W Fluorescent Lamp Inverter Bart Milnes 316,168 60 *
Adjustable Strobe Light 292,448 36
Black Light 257,918 29
Colour (Sound) Organ 274,671 36
Electronic Dice NEW! 175,539 10 *
Fantastic Atom Expander 188,891 25
Flash Slave Trigger 206,309 18 *
Infa-Red Remote Control 617,087 216 *
IR Remote Extender NEW! 118,071 2 *
IR Remote Jammer Carl 248,855 110 *
IR Remote Switch NEW! 145,745 9 *
LASER Transmitter/Receiver 394,356 92
LED Chaser 430,024 83 *
LED Metronome NEW! 91,066 3 *
LED Thermometer 195,574 22 *
Light/Dark Detector 294,188 90 *
Simple Colour Organ 127,576 10 *
Strobe Light 262,162 27 *
TRIAC Light Dimmer 535,695 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 344,694 122 *
Electromagnetic Levitator NEW! 132,611 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 901,072 214 *
AC Motor Speed Controller 370,256 29 *
Air Flow Detector 239,869 54 *
Digital Keypad Combination Lock 185,151 20
Low Voltage Alarm 214,877 58 *
Pine Racecar Victory Judge 93,323 1 *
Pulse Width Modulation DC Motor Control 633,434 94
Rain Detector 292,604 112 *
Simple Lie Detector 545,881 323
Simple Polarity Tester Dudley LeRoux 152,515 13 *
Simple Servo Controller 208,191 22 *
Simple Touch Switch NEW! 157,764 5 *
Simple Two Speed Contactor DC Motor Controller 193,075 21 *
Stepper Motor Controller 723,946 120 *
Time Delay Relay 541,575 88
Time Delay Relay II jawaharlal@excite.com 230,939 39 *
Touch Switch 276,998 51 *
Video Activated Relay 111,219 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 167,485 10 *
Water Detector With Sump/Bilge Pump Controller 140,453 18 *
Wire Loop Alarm Alex Meaden 194,526 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 298,022 25 *
12VDC To 120VAC Inverter 1,478,595 689
6V to 12V Converter 506,804 121
Automatic 12V Lead Acid Battery Charger 913,532 248
Automatic Load Sensing Power Switch 153,605 16 *
Car Battery Charger 863,838 159 *
Dual Polarity Power Supply 357,411 84 *
Fixed Voltage Power Supply 296,803 52 *
High Current Power Supply 321,426 66 *
High Voltage High Current Power Supply 240,012 35 *
LASER Power Supply 280,266 28
Portable CD Player Adapter For Car 198,842 12 *
Power Supply 719,930 259 *
Solid State Tesla Coil NEW! 133,248 4
Solid State Tesla Coil/High Voltage Generator 422,811 50
Transformerless Power Supply 447,829 117 *
Voltage Inverter 320,745 51 *
Voltage Inverter II 189,119 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 570,048 182
3 Watt FM Transmitter Rae XL Tkacik 318,309 83 *
50 Watt Amplifier 491,317 74
8 Note Tune Player 130,397 12 *
8 Watt Audio Amp 355,748 67 *
Aircraft Radio Communications Receiver 261,498 49 *
Crystal Radio 149,887 53 *
Digital Volume Control 318,392 47 *
Electronic Stethoscope 297,930 141 *
FET Audio Mixer 327,802 41
FM Transmitter 975,391 420
Guitar Fuzz Effect 230,964 52 *
Microphone Mixer Anatoly I. Shikhatov 237,039 26 *
Mono To Stereo Synthesizer oRbEq 119,993 18 *
One Tube Regenerative Radio NEW! 122,537 4 *
Op Amp Radio 369,375 80 *
Single Chip AM Radio NEW! 90,393 2 *
Single Chip FM Radio NEW! 157,537 1 *
Sound Level Meter 327,490 51 *
Stereo Tube Amplifier Weslee Kinsler 254,549 15 *
Tone Control 293,488 31
Transistor Organ 184,594 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 152,976 27 *
FM Telephone Bug 225,140 57
Phone Busy Indicator 203,168 24 *
Remote Telephone Ringer 108,204 3 *
Ringing Phone Light Flasher 201,971 35 *
Simple Phone Tap Derek Tombrello 372,172 98 *
Telephone Hold Button 117,933 10
Telephone Recorder 204,874 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.