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, January 28, 2022
FM Transmitter10
Rain Detector9
Yesterday
Thursday, January 27, 2022
FM Transmitter41
12VDC To 120VAC Inverter40
Of All Time 12VDC To 120VAC Inverter1,496,703
FM Transmitter988,449

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 219,821 61 *
Car Alarm Arming Horn Beep Canceller bob 130,245 6 *
Wireless Auto Tachometer 334,518 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 153,892 29 *
Parallel (Printer) Port Interface 275,759 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 437,646 63 *
3 Channel Spectrum Analyzer 212,913 20
40W Fluorescent Lamp Inverter Bart Milnes 322,412 60 *
Adjustable Strobe Light 299,581 36
Black Light 267,036 29
Colour (Sound) Organ 281,482 36
Electronic Dice NEW! 181,481 10 *
Fantastic Atom Expander 195,987 25
Flash Slave Trigger 212,689 18 *
Infa-Red Remote Control 624,371 216 *
IR Remote Extender NEW! 124,580 2 *
IR Remote Jammer Carl 255,459 110 *
IR Remote Switch NEW! 151,191 9 *
LASER Transmitter/Receiver 403,012 92
LED Chaser 435,929 83 *
LED Metronome NEW! 93,874 3 *
LED Thermometer 200,231 22 *
Light/Dark Detector 299,423 90 *
Simple Colour Organ 131,651 10 *
Strobe Light 267,469 27 *
TRIAC Light Dimmer 541,559 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 351,144 122 *
Electromagnetic Levitator NEW! 137,467 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 910,932 214 *
AC Motor Speed Controller 377,867 29 *
Air Flow Detector 244,689 54 *
Digital Keypad Combination Lock 189,997 20
Low Voltage Alarm 221,085 58 *
Pine Racecar Victory Judge 97,314 1 *
Pulse Width Modulation DC Motor Control 639,544 94
Rain Detector 297,570 112 *
Simple Lie Detector 552,066 323
Simple Polarity Tester Dudley LeRoux 158,390 13 *
Simple Servo Controller 214,023 22 *
Simple Touch Switch NEW! 162,605 5 *
Simple Two Speed Contactor DC Motor Controller 197,957 21 *
Stepper Motor Controller 732,880 120 *
Time Delay Relay 547,362 88
Time Delay Relay II jawaharlal@excite.com 237,480 39 *
Touch Switch 282,105 51 *
Video Activated Relay 115,543 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 172,782 10 *
Water Detector With Sump/Bilge Pump Controller 146,025 18 *
Wire Loop Alarm Alex Meaden 199,191 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 304,384 25 *
12VDC To 120VAC Inverter 1,496,703 689
6V to 12V Converter 515,194 121
Automatic 12V Lead Acid Battery Charger 922,883 248
Automatic Load Sensing Power Switch 159,858 16 *
Car Battery Charger 871,099 159 *
Dual Polarity Power Supply 362,237 84 *
Fixed Voltage Power Supply 302,571 52 *
High Current Power Supply 327,713 66 *
High Voltage High Current Power Supply 245,087 35 *
LASER Power Supply 286,639 28
Portable CD Player Adapter For Car 204,523 12 *
Power Supply 727,220 259 *
Solid State Tesla Coil NEW! 137,724 4
Solid State Tesla Coil/High Voltage Generator 431,635 50
Transformerless Power Supply 454,094 117 *
Voltage Inverter 328,265 51 *
Voltage Inverter II 194,000 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 576,377 182
3 Watt FM Transmitter Rae XL Tkacik 324,709 83 *
50 Watt Amplifier 497,755 74
8 Note Tune Player 134,671 12 *
8 Watt Audio Amp 362,481 67 *
Aircraft Radio Communications Receiver 267,617 49 *
Crystal Radio 152,792 53 *
Digital Volume Control 324,302 47 *
Electronic Stethoscope 304,870 142 *
FET Audio Mixer 334,478 41
FM Transmitter 988,449 420
Guitar Fuzz Effect 237,528 54 *
Microphone Mixer Anatoly I. Shikhatov 242,548 26 *
Mono To Stereo Synthesizer oRbEq 125,612 18 *
One Tube Regenerative Radio NEW! 128,059 4 *
Op Amp Radio 376,535 80 *
Single Chip AM Radio NEW! 93,610 2 *
Single Chip FM Radio NEW! 163,392 1 *
Sound Level Meter 333,047 51 *
Stereo Tube Amplifier Weslee Kinsler 260,029 15 *
Tone Control 300,846 31
Transistor Organ 190,883 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 157,525 27 *
FM Telephone Bug 229,614 57
Phone Busy Indicator 207,645 24 *
Remote Telephone Ringer 112,638 3 *
Ringing Phone Light Flasher 208,223 35 *
Simple Phone Tap Derek Tombrello 377,012 98 *
Telephone Hold Button 122,593 10
Telephone Recorder 209,998 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.