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, March 29, 2024
Voltage Inverter19
6V to 12V Converter15
Yesterday
Thursday, March 28, 2024
FM Transmitter40
12VDC To 120VAC Inverter36
Of All Time 12VDC To 120VAC Inverter1,530,570
FM Transmitter1,008,672

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 227,411 61 *
Car Alarm Arming Horn Beep Canceller bob 137,016 6 *
Wireless Auto Tachometer 343,520 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 160,323 29 *
Parallel (Printer) Port Interface 286,273 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 448,136 63 *
3 Channel Spectrum Analyzer 222,191 20
40W Fluorescent Lamp Inverter Bart Milnes 330,634 60 *
Adjustable Strobe Light 309,509 36
Black Light 281,094 29
Colour (Sound) Organ 291,144 36
Electronic Dice NEW! 189,653 10 *
Fantastic Atom Expander 203,468 25
Flash Slave Trigger 221,711 18 *
Infa-Red Remote Control 637,614 216 *
IR Remote Extender NEW! 133,213 3 *
IR Remote Jammer Carl 266,470 110 *
IR Remote Switch NEW! 158,126 9 *
LASER Transmitter/Receiver 416,802 92
LED Chaser 446,472 83 *
LED Metronome NEW! 99,889 3 *
LED Thermometer 207,238 22 *
Light/Dark Detector 306,626 90 *
Simple Colour Organ 138,052 11 *
Strobe Light 276,376 27 *
TRIAC Light Dimmer 553,213 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 359,838 122 *
Electromagnetic Levitator NEW! 144,938 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 922,753 214 *
AC Motor Speed Controller 391,848 29 *
Air Flow Detector 252,290 54 *
Digital Keypad Combination Lock 202,827 20
Low Voltage Alarm 229,732 58 *
Pine Racecar Victory Judge 103,203 1 *
Pulse Width Modulation DC Motor Control 655,371 94
Rain Detector 305,211 112 *
Simple Lie Detector 565,098 323
Simple Polarity Tester Dudley LeRoux 165,975 13 *
Simple Servo Controller 221,972 22 *
Simple Touch Switch NEW! 170,427 6 *
Simple Two Speed Contactor DC Motor Controller 205,774 21 *
Stepper Motor Controller 746,311 120 *
Time Delay Relay 556,135 88
Time Delay Relay II jawaharlal@excite.com 247,530 39 *
Touch Switch 290,242 51 *
Video Activated Relay 122,302 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 181,797 10 *
Water Detector With Sump/Bilge Pump Controller 153,331 18 *
Wire Loop Alarm Alex Meaden 206,300 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 316,505 25 *
12VDC To 120VAC Inverter 1,530,570 691
6V to 12V Converter 527,979 121
Automatic 12V Lead Acid Battery Charger 937,726 248
Automatic Load Sensing Power Switch 167,880 16 *
Car Battery Charger 883,743 159 *
Dual Polarity Power Supply 371,789 84 *
Fixed Voltage Power Supply 311,816 52 *
High Current Power Supply 339,494 66 *
High Voltage High Current Power Supply 264,585 35 *
LASER Power Supply 296,724 28
Portable CD Player Adapter For Car 212,998 12 *
Power Supply 739,012 259 *
Solid State Tesla Coil NEW! 146,952 4
Solid State Tesla Coil/High Voltage Generator 444,922 51
Transformerless Power Supply 463,691 117 *
Voltage Inverter 339,392 51 *
Voltage Inverter II 203,668 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 585,932 182
3 Watt FM Transmitter Rae XL Tkacik 335,864 83 *
50 Watt Amplifier 508,304 74
8 Note Tune Player 141,273 12 *
8 Watt Audio Amp 373,281 67 *
Aircraft Radio Communications Receiver 279,098 49 *
Crystal Radio 159,479 53 *
Digital Volume Control 338,923 47 *
Electronic Stethoscope 321,852 142 *
FET Audio Mixer 344,192 41
FM Transmitter 1,008,672 420
Guitar Fuzz Effect 248,178 54 *
Microphone Mixer Anatoly I. Shikhatov 251,245 26 *
Mono To Stereo Synthesizer oRbEq 134,442 18 *
One Tube Regenerative Radio NEW! 142,651 4 *
Op Amp Radio 389,407 80 *
Single Chip AM Radio NEW! 100,403 3 *
Single Chip FM Radio NEW! 173,216 1 *
Sound Level Meter 342,627 51 *
Stereo Tube Amplifier Weslee Kinsler 268,918 15 *
Tone Control 310,392 31
Transistor Organ 200,235 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 164,241 27 *
FM Telephone Bug 236,052 57
Phone Busy Indicator 214,610 24 *
Remote Telephone Ringer 118,958 3 *
Ringing Phone Light Flasher 218,777 35 *
Simple Phone Tap Derek Tombrello 384,284 98 *
Telephone Hold Button 129,728 10
Telephone Recorder 217,202 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.