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
Monday, March 18, 2024
12VDC To 120VAC Inverter39
12V To 24V DC-DC Converter17
Yesterday
Sunday, March 17, 2024
12VDC To 120VAC Inverter47
Voltage Inverter31
Of All Time 12VDC To 120VAC Inverter1,530,134
FM Transmitter1,008,371

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 227,333 61 *
Car Alarm Arming Horn Beep Canceller bob 136,948 6 *
Wireless Auto Tachometer 343,429 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 160,263 29 *
Parallel (Printer) Port Interface 286,129 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 448,039 63 *
3 Channel Spectrum Analyzer 222,093 20
40W Fluorescent Lamp Inverter Bart Milnes 330,535 60 *
Adjustable Strobe Light 309,379 36
Black Light 280,927 29
Colour (Sound) Organ 291,002 36
Electronic Dice NEW! 189,548 10 *
Fantastic Atom Expander 203,387 25
Flash Slave Trigger 221,630 18 *
Infa-Red Remote Control 637,490 216 *
IR Remote Extender NEW! 133,113 3 *
IR Remote Jammer Carl 266,334 110 *
IR Remote Switch NEW! 158,030 9 *
LASER Transmitter/Receiver 416,623 92
LED Chaser 446,332 83 *
LED Metronome NEW! 99,801 3 *
LED Thermometer 207,152 22 *
Light/Dark Detector 306,525 90 *
Simple Colour Organ 137,970 11 *
Strobe Light 276,292 27 *
TRIAC Light Dimmer 553,049 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 359,749 122 *
Electromagnetic Levitator NEW! 144,843 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 922,623 214 *
AC Motor Speed Controller 391,680 29 *
Air Flow Detector 252,205 54 *
Digital Keypad Combination Lock 202,736 20
Low Voltage Alarm 229,650 58 *
Pine Racecar Victory Judge 103,128 1 *
Pulse Width Modulation DC Motor Control 655,232 94
Rain Detector 305,107 112 *
Simple Lie Detector 564,966 323
Simple Polarity Tester Dudley LeRoux 165,887 13 *
Simple Servo Controller 221,866 22 *
Simple Touch Switch NEW! 170,302 6 *
Simple Two Speed Contactor DC Motor Controller 205,690 21 *
Stepper Motor Controller 746,114 120 *
Time Delay Relay 556,009 88
Time Delay Relay II jawaharlal@excite.com 247,413 39 *
Touch Switch 290,154 51 *
Video Activated Relay 122,212 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 181,691 10 *
Water Detector With Sump/Bilge Pump Controller 153,227 18 *
Wire Loop Alarm Alex Meaden 206,239 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 316,339 25 *
12VDC To 120VAC Inverter 1,530,134 691
6V to 12V Converter 527,821 121
Automatic 12V Lead Acid Battery Charger 937,594 248
Automatic Load Sensing Power Switch 167,788 16 *
Car Battery Charger 883,634 159 *
Dual Polarity Power Supply 371,648 84 *
Fixed Voltage Power Supply 311,722 52 *
High Current Power Supply 339,334 66 *
High Voltage High Current Power Supply 264,486 35 *
LASER Power Supply 296,589 28
Portable CD Player Adapter For Car 212,906 12 *
Power Supply 738,876 259 *
Solid State Tesla Coil NEW! 146,838 4
Solid State Tesla Coil/High Voltage Generator 444,769 51
Transformerless Power Supply 463,575 117 *
Voltage Inverter 339,114 51 *
Voltage Inverter II 203,523 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 585,826 182
3 Watt FM Transmitter Rae XL Tkacik 335,702 83 *
50 Watt Amplifier 508,149 74
8 Note Tune Player 141,179 12 *
8 Watt Audio Amp 373,120 67 *
Aircraft Radio Communications Receiver 278,927 49 *
Crystal Radio 159,361 53 *
Digital Volume Control 338,823 47 *
Electronic Stethoscope 321,734 142 *
FET Audio Mixer 344,081 41
FM Transmitter 1,008,371 420
Guitar Fuzz Effect 248,013 54 *
Microphone Mixer Anatoly I. Shikhatov 251,131 26 *
Mono To Stereo Synthesizer oRbEq 134,310 18 *
One Tube Regenerative Radio NEW! 142,425 4 *
Op Amp Radio 389,223 80 *
Single Chip AM Radio NEW! 100,314 3 *
Single Chip FM Radio NEW! 173,093 1 *
Sound Level Meter 342,503 51 *
Stereo Tube Amplifier Weslee Kinsler 268,801 15 *
Tone Control 310,283 31
Transistor Organ 200,092 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 164,158 27 *
FM Telephone Bug 235,974 57
Phone Busy Indicator 214,505 24 *
Remote Telephone Ringer 118,877 3 *
Ringing Phone Light Flasher 218,639 35 *
Simple Phone Tap Derek Tombrello 384,179 98 *
Telephone Hold Button 129,646 10
Telephone Recorder 217,108 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.