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
Sunday, June 23, 2024
Microphone Mixer5
Stepper Motor Controller4
Yesterday
Saturday, June 22, 2024
12VDC To 120VAC Inverter35
50 Watt Amplifier32
Of All Time 12VDC To 120VAC Inverter1,534,023
FM Transmitter1,011,312

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 228,138 61 *
Car Alarm Arming Horn Beep Canceller bob 137,652 6 *
Wireless Auto Tachometer 344,348 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 160,933 29 *
Parallel (Printer) Port Interface 287,823 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 449,080 63 *
3 Channel Spectrum Analyzer 223,187 20
40W Fluorescent Lamp Inverter Bart Milnes 331,406 60 *
Adjustable Strobe Light 310,384 36
Black Light 282,406 29
Colour (Sound) Organ 292,073 36
Electronic Dice NEW! 190,526 10 *
Fantastic Atom Expander 204,159 25
Flash Slave Trigger 222,516 18 *
Infa-Red Remote Control 638,705 216 *
IR Remote Extender NEW! 133,989 3 *
IR Remote Jammer Carl 267,676 110 *
IR Remote Switch NEW! 158,890 9 *
LASER Transmitter/Receiver 418,295 92
LED Chaser 447,550 83 *
LED Metronome NEW! 100,733 3 *
LED Thermometer 208,015 22 *
Light/Dark Detector 307,335 90 *
Simple Colour Organ 138,609 11 *
Strobe Light 277,024 27 *
TRIAC Light Dimmer 554,529 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 360,791 122 *
Electromagnetic Levitator NEW! 145,614 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 924,150 214 *
AC Motor Speed Controller 393,255 29 *
Air Flow Detector 253,132 54 *
Digital Keypad Combination Lock 203,522 20
Low Voltage Alarm 230,562 58 *
Pine Racecar Victory Judge 103,873 1 *
Pulse Width Modulation DC Motor Control 656,603 94
Rain Detector 306,069 112 *
Simple Lie Detector 566,182 323
Simple Polarity Tester Dudley LeRoux 166,757 13 *
Simple Servo Controller 222,822 22 *
Simple Touch Switch NEW! 171,256 6 *
Simple Two Speed Contactor DC Motor Controller 206,542 21 *
Stepper Motor Controller 748,290 120 *
Time Delay Relay 557,190 88
Time Delay Relay II jawaharlal@excite.com 248,572 39 *
Touch Switch 291,161 51 *
Video Activated Relay 123,075 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 182,750 10 *
Water Detector With Sump/Bilge Pump Controller 154,215 18 *
Wire Loop Alarm Alex Meaden 206,930 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 317,916 25 *
12VDC To 120VAC Inverter 1,534,023 691
6V to 12V Converter 529,374 121
Automatic 12V Lead Acid Battery Charger 938,985 248
Automatic Load Sensing Power Switch 168,849 16 *
Car Battery Charger 884,908 159 *
Dual Polarity Power Supply 372,778 84 *
Fixed Voltage Power Supply 312,705 52 *
High Current Power Supply 340,912 66 *
High Voltage High Current Power Supply 265,477 35 *
LASER Power Supply 297,792 28
Portable CD Player Adapter For Car 213,703 12 *
Power Supply 741,197 259 *
Solid State Tesla Coil NEW! 147,961 4
Solid State Tesla Coil/High Voltage Generator 446,269 51
Transformerless Power Supply 464,807 117 *
Voltage Inverter 341,110 51 *
Voltage Inverter II 204,733 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 587,079 182
3 Watt FM Transmitter Rae XL Tkacik 337,257 83 *
50 Watt Amplifier 509,652 74
8 Note Tune Player 141,988 12 *
8 Watt Audio Amp 375,096 67 *
Aircraft Radio Communications Receiver 280,354 49 *
Crystal Radio 160,420 53 *
Digital Volume Control 340,100 47 *
Electronic Stethoscope 322,947 142 *
FET Audio Mixer 345,187 41
FM Transmitter 1,011,312 420
Guitar Fuzz Effect 249,280 54 *
Microphone Mixer Anatoly I. Shikhatov 252,158 26 *
Mono To Stereo Synthesizer oRbEq 135,325 18 *
One Tube Regenerative Radio NEW! 144,487 4 *
Op Amp Radio 390,977 80 *
Single Chip AM Radio NEW! 101,214 3 *
Single Chip FM Radio NEW! 174,247 1 *
Sound Level Meter 343,577 51 *
Stereo Tube Amplifier Weslee Kinsler 269,923 15 *
Tone Control 311,306 31
Transistor Organ 201,296 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 164,919 27 *
FM Telephone Bug 236,638 57
Phone Busy Indicator 215,317 24 *
Remote Telephone Ringer 119,562 3 *
Ringing Phone Light Flasher 220,034 35 *
Simple Phone Tap Derek Tombrello 385,011 98 *
Telephone Hold Button 130,397 10
Telephone Recorder 217,949 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.