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 24, 2017
12VDC To 120VAC Inverter72
Automatic 12V Lead Acid Battery Charger45
Yesterday
Thursday, March 23, 2017
12VDC To 120VAC Inverter72
Automatic 12V Lead Acid Battery Charger65
Of All Time 12VDC To 120VAC Inverter1,372,509
FM Transmitter914,508

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 182,327 61 *
Car Alarm Arming Horn Beep Canceller bob 95,311 6 *
Wireless Auto Tachometer 289,083 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 126,242 29 *
Parallel (Printer) Port Interface 228,481 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 382,058 62 *
3 Channel Spectrum Analyzer 175,487 20
40W Fluorescent Lamp Inverter Bart Milnes 281,408 60 *
Adjustable Strobe Light 253,160 36
Black Light 215,507 29
Colour (Sound) Organ 238,115 36
Electronic Dice NEW! 143,776 9 *
Fantastic Atom Expander 152,735 25
Flash Slave Trigger 174,270 17 *
Infa-Red Remote Control 569,597 216 *
IR Remote Extender NEW! 83,403 2 *
IR Remote Jammer Carl 215,922 110 *
IR Remote Switch NEW! 113,985 9 *
LASER Transmitter/Receiver 353,177 92
LED Chaser 395,881 83 *
LED Metronome NEW! 74,600 3 *
LED Thermometer 167,819 22 *
Light/Dark Detector 265,637 89 *
Simple Colour Organ 104,638 10 *
Strobe Light 235,334 27 *
TRIAC Light Dimmer 443,282 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 303,890 122 *
Electromagnetic Levitator NEW! 104,231 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 840,618 214 *
AC Motor Speed Controller 324,657 29 *
Air Flow Detector 211,121 54 *
Digital Keypad Combination Lock 155,726 20
Low Voltage Alarm 183,189 58 *
Pine Racecar Victory Judge 69,343 1 *
Pulse Width Modulation DC Motor Control 597,168 93
Rain Detector 263,670 112 *
Simple Lie Detector 505,301 323
Simple Polarity Tester Dudley LeRoux 120,205 13 *
Simple Servo Controller 176,042 22 *
Simple Touch Switch NEW! 131,301 5 *
Simple Two Speed Contactor DC Motor Controller 168,191 21 *
Stepper Motor Controller 658,268 120 *
Time Delay Relay 497,664 88
Time Delay Relay II jawaharlal@excite.com 196,051 39 *
Touch Switch 247,359 51 *
Video Activated Relay 86,915 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 138,386 10 *
Water Detector With Sump/Bilge Pump Controller 112,628 18 *
Wire Loop Alarm Alex Meaden 169,740 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 254,702 25 *
12VDC To 120VAC Inverter 1,372,509 687
6V to 12V Converter 431,749 121
Automatic 12V Lead Acid Battery Charger 847,027 246
Automatic Load Sensing Power Switch 125,077 15 *
Car Battery Charger 802,845 159 *
Dual Polarity Power Supply 290,197 84 *
Fixed Voltage Power Supply 268,894 52 *
High Current Power Supply 285,015 64 *
High Voltage High Current Power Supply 213,304 35 *
LASER Power Supply 242,144 28
Portable CD Player Adapter For Car 169,832 12 *
Power Supply 669,487 259 *
Solid State Tesla Coil NEW! 108,420 3
Solid State Tesla Coil/High Voltage Generator 371,179 50
Transformerless Power Supply 407,656 117 *
Voltage Inverter 293,497 51 *
Voltage Inverter II 166,849 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 530,983 182
3 Watt FM Transmitter Rae XL Tkacik 285,025 81 *
50 Watt Amplifier 446,808 74
8 Note Tune Player 108,486 12 *
8 Watt Audio Amp 316,077 67 *
Aircraft Radio Communications Receiver 220,678 49 *
Crystal Radio 129,171 53 *
Digital Volume Control 285,809 47 *
Electronic Stethoscope 260,484 141 *
FET Audio Mixer 290,511 40
FM Transmitter 914,508 418
Guitar Fuzz Effect 195,328 52 *
Microphone Mixer Anatoly I. Shikhatov 203,794 26 *
Mono To Stereo Synthesizer oRbEq 91,021 18 *
One Tube Regenerative Radio NEW! 94,979 4 *
Op Amp Radio 329,495 80 *
Single Chip AM Radio NEW! 73,248 2 *
Single Chip FM Radio NEW! 122,719 1 *
Sound Level Meter 294,374 51 *
Stereo Tube Amplifier Weslee Kinsler 223,545 15 *
Tone Control 256,487 31
Transistor Organ 154,230 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 130,958 27 *
FM Telephone Bug 194,503 57
Phone Busy Indicator 171,594 24 *
Remote Telephone Ringer 87,351 3 *
Ringing Phone Light Flasher 171,768 33 *
Simple Phone Tap Derek Tombrello 322,175 98 *
Telephone Hold Button 90,794 9
Telephone Recorder 174,845 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.