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
Saturday, September 19, 2020
12VDC To 120VAC Inverter34
Car Battery Charger27
Yesterday
Friday, September 18, 2020
12VDC To 120VAC Inverter42
Power Supply30
Of All Time 12VDC To 120VAC Inverter1,470,891
FM Transmitter971,706

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 211,772 61 *
Car Alarm Arming Horn Beep Canceller bob 122,859 6 *
Wireless Auto Tachometer 324,983 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 147,903 29 *
Parallel (Printer) Port Interface 265,535 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 425,288 63 *
3 Channel Spectrum Analyzer 205,102 20
40W Fluorescent Lamp Inverter Bart Milnes 313,757 60 *
Adjustable Strobe Light 289,670 36
Black Light 254,582 29
Colour (Sound) Organ 271,695 36
Electronic Dice NEW! 173,118 10 *
Fantastic Atom Expander 186,206 25
Flash Slave Trigger 203,911 18 *
Infa-Red Remote Control 613,539 216 *
IR Remote Extender NEW! 115,648 2 *
IR Remote Jammer Carl 245,851 110 *
IR Remote Switch NEW! 143,511 9 *
LASER Transmitter/Receiver 391,012 92
LED Chaser 427,685 83 *
LED Metronome NEW! 90,012 3 *
LED Thermometer 193,739 22 *
Light/Dark Detector 292,237 90 *
Simple Colour Organ 126,021 10 *
Strobe Light 260,244 27 *
TRIAC Light Dimmer 533,277 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 341,226 122 *
Electromagnetic Levitator NEW! 130,831 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 897,597 214 *
AC Motor Speed Controller 367,468 29 *
Air Flow Detector 237,938 54 *
Digital Keypad Combination Lock 183,393 20
Low Voltage Alarm 212,745 58 *
Pine Racecar Victory Judge 91,833 1 *
Pulse Width Modulation DC Motor Control 630,937 94
Rain Detector 290,813 112 *
Simple Lie Detector 543,610 323
Simple Polarity Tester Dudley LeRoux 150,267 13 *
Simple Servo Controller 206,152 22 *
Simple Touch Switch NEW! 156,026 5 *
Simple Two Speed Contactor DC Motor Controller 191,377 21 *
Stepper Motor Controller 720,624 120 *
Time Delay Relay 539,361 88
Time Delay Relay II jawaharlal@excite.com 228,589 39 *
Touch Switch 275,054 51 *
Video Activated Relay 109,591 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 165,497 10 *
Water Detector With Sump/Bilge Pump Controller 137,533 18 *
Wire Loop Alarm Alex Meaden 192,871 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 295,685 25 *
12VDC To 120VAC Inverter 1,470,891 689
6V to 12V Converter 502,728 121
Automatic 12V Lead Acid Battery Charger 909,932 247
Automatic Load Sensing Power Switch 151,342 16 *
Car Battery Charger 860,522 159 *
Dual Polarity Power Supply 355,652 84 *
Fixed Voltage Power Supply 294,773 52 *
High Current Power Supply 319,025 65 *
High Voltage High Current Power Supply 238,094 35 *
LASER Power Supply 277,998 28
Portable CD Player Adapter For Car 196,849 12 *
Power Supply 717,401 259 *
Solid State Tesla Coil NEW! 131,727 4
Solid State Tesla Coil/High Voltage Generator 419,529 50
Transformerless Power Supply 445,508 117 *
Voltage Inverter 318,420 51 *
Voltage Inverter II 187,479 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 567,738 182
3 Watt FM Transmitter Rae XL Tkacik 316,125 82 *
50 Watt Amplifier 488,801 74
8 Note Tune Player 128,753 12 *
8 Watt Audio Amp 353,232 67 *
Aircraft Radio Communications Receiver 259,158 49 *
Crystal Radio 148,765 53 *
Digital Volume Control 316,303 47 *
Electronic Stethoscope 295,007 141 *
FET Audio Mixer 325,397 41
FM Transmitter 971,706 419
Guitar Fuzz Effect 228,623 52 *
Microphone Mixer Anatoly I. Shikhatov 234,979 26 *
Mono To Stereo Synthesizer oRbEq 117,955 18 *
One Tube Regenerative Radio NEW! 120,742 4 *
Op Amp Radio 366,760 80 *
Single Chip AM Radio NEW! 89,285 2 *
Single Chip FM Radio NEW! 155,450 1 *
Sound Level Meter 325,406 51 *
Stereo Tube Amplifier Weslee Kinsler 252,459 15 *
Tone Control 290,879 31
Transistor Organ 182,405 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 151,314 27 *
FM Telephone Bug 223,273 57
Phone Busy Indicator 201,510 24 *
Remote Telephone Ringer 106,528 3 *
Ringing Phone Light Flasher 199,838 35 *
Simple Phone Tap Derek Tombrello 370,379 98 *
Telephone Hold Button 116,223 10
Telephone Recorder 202,743 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.