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
Wednesday, August 23, 2017
Dual Polarity Power Supply14
12VDC To 120VAC Inverter9
Yesterday
Tuesday, August 22, 2017
Dual Polarity Power Supply108
12VDC To 120VAC Inverter70
Of All Time 12VDC To 120VAC Inverter1,387,288
FM Transmitter920,986

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 184,917 61 *
Car Alarm Arming Horn Beep Canceller bob 97,218 6 *
Wireless Auto Tachometer 291,886 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 128,719 29 *
Parallel (Printer) Port Interface 231,082 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 385,807 62 *
3 Channel Spectrum Analyzer 178,605 20
40W Fluorescent Lamp Inverter Bart Milnes 284,569 60 *
Adjustable Strobe Light 256,687 36
Black Light 218,940 29
Colour (Sound) Organ 241,167 36
Electronic Dice NEW! 146,412 9 *
Fantastic Atom Expander 155,581 25
Flash Slave Trigger 176,974 17 *
Infa-Red Remote Control 573,457 216 *
IR Remote Extender NEW! 86,280 2 *
IR Remote Jammer Carl 219,197 110 *
IR Remote Switch NEW! 116,260 9 *
LASER Transmitter/Receiver 356,645 92
LED Chaser 399,241 83 *
LED Metronome NEW! 76,797 3 *
LED Thermometer 170,636 22 *
Light/Dark Detector 269,227 89 *
Simple Colour Organ 107,039 10 *
Strobe Light 238,087 27 *
TRIAC Light Dimmer 447,744 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 306,289 122 *
Electromagnetic Levitator NEW! 107,081 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 846,159 214 *
AC Motor Speed Controller 329,693 29 *
Air Flow Detector 214,198 54 *
Digital Keypad Combination Lock 157,975 20
Low Voltage Alarm 186,948 58 *
Pine Racecar Victory Judge 71,544 1 *
Pulse Width Modulation DC Motor Control 601,752 93
Rain Detector 266,685 112 *
Simple Lie Detector 509,105 323
Simple Polarity Tester Dudley LeRoux 122,781 13 *
Simple Servo Controller 178,723 22 *
Simple Touch Switch NEW! 133,931 5 *
Simple Two Speed Contactor DC Motor Controller 170,797 21 *
Stepper Motor Controller 664,278 120 *
Time Delay Relay 502,490 88
Time Delay Relay II jawaharlal@excite.com 198,860 39 *
Touch Switch 250,372 51 *
Video Activated Relay 89,380 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 140,784 10 *
Water Detector With Sump/Bilge Pump Controller 114,457 18 *
Wire Loop Alarm Alex Meaden 172,711 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 259,524 25 *
12VDC To 120VAC Inverter 1,387,288 687
6V to 12V Converter 437,476 121
Automatic 12V Lead Acid Battery Charger 855,346 246
Automatic Load Sensing Power Switch 127,880 15 *
Car Battery Charger 808,835 159 *
Dual Polarity Power Supply 298,420 84 *
Fixed Voltage Power Supply 271,830 52 *
High Current Power Supply 288,591 64 *
High Voltage High Current Power Supply 215,863 35 *
LASER Power Supply 245,516 28
Portable CD Player Adapter For Car 173,287 12 *
Power Supply 675,051 259 *
Solid State Tesla Coil NEW! 111,114 3
Solid State Tesla Coil/High Voltage Generator 376,657 50
Transformerless Power Supply 411,521 117 *
Voltage Inverter 297,363 51 *
Voltage Inverter II 168,574 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 535,581 182
3 Watt FM Transmitter Rae XL Tkacik 287,972 81 *
50 Watt Amplifier 451,363 74
8 Note Tune Player 110,669 12 *
8 Watt Audio Amp 320,022 67 *
Aircraft Radio Communications Receiver 224,671 49 *
Crystal Radio 131,568 53 *
Digital Volume Control 289,219 47 *
Electronic Stethoscope 264,867 141 *
FET Audio Mixer 294,770 40
FM Transmitter 920,986 418
Guitar Fuzz Effect 198,636 52 *
Microphone Mixer Anatoly I. Shikhatov 207,330 26 *
Mono To Stereo Synthesizer oRbEq 93,194 18 *
One Tube Regenerative Radio NEW! 98,076 4 *
Op Amp Radio 333,824 80 *
Single Chip AM Radio NEW! 75,486 2 *
Single Chip FM Radio NEW! 126,160 1 *
Sound Level Meter 297,112 51 *
Stereo Tube Amplifier Weslee Kinsler 226,283 15 *
Tone Control 260,433 31
Transistor Organ 156,923 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 133,053 27 *
FM Telephone Bug 196,885 57
Phone Busy Indicator 175,845 24 *
Remote Telephone Ringer 89,090 3 *
Ringing Phone Light Flasher 175,071 33 *
Simple Phone Tap Derek Tombrello 324,557 98 *
Telephone Hold Button 93,238 9
Telephone Recorder 177,411 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.