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, April 14, 2024
Stepper Motor Controller16
Transistor Organ16
Yesterday
Saturday, April 13, 2024
Transistor Organ44
Telephone Recorder36
Of All Time 12VDC To 120VAC Inverter1,531,163
FM Transmitter1,009,091

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 227,534 61 *
Car Alarm Arming Horn Beep Canceller bob 137,121 6 *
Wireless Auto Tachometer 343,656 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 160,420 29 *
Parallel (Printer) Port Interface 286,422 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 448,274 63 *
3 Channel Spectrum Analyzer 222,357 20
40W Fluorescent Lamp Inverter Bart Milnes 330,762 60 *
Adjustable Strobe Light 309,641 36
Black Light 281,303 29
Colour (Sound) Organ 291,297 36
Electronic Dice NEW! 189,783 10 *
Fantastic Atom Expander 203,574 25
Flash Slave Trigger 221,825 18 *
Infa-Red Remote Control 637,797 216 *
IR Remote Extender NEW! 133,330 3 *
IR Remote Jammer Carl 266,636 110 *
IR Remote Switch NEW! 158,262 9 *
LASER Transmitter/Receiver 417,105 92
LED Chaser 446,643 83 *
LED Metronome NEW! 100,031 3 *
LED Thermometer 207,363 22 *
Light/Dark Detector 306,768 90 *
Simple Colour Organ 138,125 11 *
Strobe Light 276,491 27 *
TRIAC Light Dimmer 553,444 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 360,002 122 *
Electromagnetic Levitator NEW! 145,049 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 922,945 214 *
AC Motor Speed Controller 392,053 29 *
Air Flow Detector 252,424 54 *
Digital Keypad Combination Lock 202,945 20
Low Voltage Alarm 229,883 58 *
Pine Racecar Victory Judge 103,310 1 *
Pulse Width Modulation DC Motor Control 655,561 94
Rain Detector 305,346 112 *
Simple Lie Detector 565,299 323
Simple Polarity Tester Dudley LeRoux 166,093 13 *
Simple Servo Controller 222,095 22 *
Simple Touch Switch NEW! 170,549 6 *
Simple Two Speed Contactor DC Motor Controller 205,890 21 *
Stepper Motor Controller 746,638 120 *
Time Delay Relay 556,305 88
Time Delay Relay II jawaharlal@excite.com 247,702 39 *
Touch Switch 290,404 51 *
Video Activated Relay 122,430 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 181,956 10 *
Water Detector With Sump/Bilge Pump Controller 153,468 18 *
Wire Loop Alarm Alex Meaden 206,398 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 316,733 25 *
12VDC To 120VAC Inverter 1,531,163 691
6V to 12V Converter 528,218 121
Automatic 12V Lead Acid Battery Charger 937,946 248
Automatic Load Sensing Power Switch 168,036 16 *
Car Battery Charger 883,944 159 *
Dual Polarity Power Supply 371,947 84 *
Fixed Voltage Power Supply 311,940 52 *
High Current Power Supply 339,726 66 *
High Voltage High Current Power Supply 264,733 35 *
LASER Power Supply 296,890 28
Portable CD Player Adapter For Car 213,100 12 *
Power Supply 739,269 259 *
Solid State Tesla Coil NEW! 147,125 4
Solid State Tesla Coil/High Voltage Generator 445,144 51
Transformerless Power Supply 463,836 117 *
Voltage Inverter 339,703 51 *
Voltage Inverter II 203,845 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 586,150 182
3 Watt FM Transmitter Rae XL Tkacik 336,112 83 *
50 Watt Amplifier 508,541 74
8 Note Tune Player 141,383 12 *
8 Watt Audio Amp 373,604 67 *
Aircraft Radio Communications Receiver 279,273 49 *
Crystal Radio 159,648 53 *
Digital Volume Control 339,254 47 *
Electronic Stethoscope 321,993 142 *
FET Audio Mixer 344,355 41
FM Transmitter 1,009,091 420
Guitar Fuzz Effect 248,391 54 *
Microphone Mixer Anatoly I. Shikhatov 251,376 26 *
Mono To Stereo Synthesizer oRbEq 134,560 18 *
One Tube Regenerative Radio NEW! 143,063 4 *
Op Amp Radio 389,638 80 *
Single Chip AM Radio NEW! 100,541 3 *
Single Chip FM Radio NEW! 173,376 1 *
Sound Level Meter 342,771 51 *
Stereo Tube Amplifier Weslee Kinsler 269,077 15 *
Tone Control 310,528 31
Transistor Organ 200,449 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 164,326 27 *
FM Telephone Bug 236,150 57
Phone Busy Indicator 214,702 24 *
Remote Telephone Ringer 119,028 3 *
Ringing Phone Light Flasher 219,042 35 *
Simple Phone Tap Derek Tombrello 384,378 98 *
Telephone Hold Button 129,832 10
Telephone Recorder 217,367 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.