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, January 29, 2023
FM Transmitter29
Ringing Phone Light Flasher27
Yesterday
Saturday, January 28, 2023
12VDC To 120VAC Inverter32
AC Motor Speed Controller22
Of All Time 12VDC To 120VAC Inverter1,510,636
FM Transmitter998,491

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 223,897 61 *
Car Alarm Arming Horn Beep Canceller bob 133,770 6 *
Wireless Auto Tachometer 339,255 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 157,360 29 *
Parallel (Printer) Port Interface 281,235 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 443,253 63 *
3 Channel Spectrum Analyzer 217,630 20
40W Fluorescent Lamp Inverter Bart Milnes 326,774 60 *
Adjustable Strobe Light 304,856 36
Black Light 274,450 29
Colour (Sound) Organ 286,493 36
Electronic Dice NEW! 185,537 10 *
Fantastic Atom Expander 200,094 25
Flash Slave Trigger 217,163 18 *
Infa-Red Remote Control 629,874 216 *
IR Remote Extender NEW! 128,790 2 *
IR Remote Jammer Carl 261,366 110 *
IR Remote Switch NEW! 154,619 9 *
LASER Transmitter/Receiver 410,170 92
LED Chaser 440,977 83 *
LED Metronome NEW! 96,786 3 *
LED Thermometer 203,881 22 *
Light/Dark Detector 303,143 90 *
Simple Colour Organ 134,945 11 *
Strobe Light 272,235 27 *
TRIAC Light Dimmer 547,001 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 355,592 122 *
Electromagnetic Levitator NEW! 141,162 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 917,099 214 *
AC Motor Speed Controller 384,379 29 *
Air Flow Detector 248,666 54 *
Digital Keypad Combination Lock 193,784 20
Low Voltage Alarm 226,194 58 *
Pine Racecar Victory Judge 100,490 1 *
Pulse Width Modulation DC Motor Control 644,388 94
Rain Detector 301,527 112 *
Simple Lie Detector 556,746 323
Simple Polarity Tester Dudley LeRoux 162,286 13 *
Simple Servo Controller 218,036 22 *
Simple Touch Switch NEW! 166,532 5 *
Simple Two Speed Contactor DC Motor Controller 201,741 21 *
Stepper Motor Controller 739,740 120 *
Time Delay Relay 551,654 88
Time Delay Relay II jawaharlal@excite.com 242,586 39 *
Touch Switch 286,310 51 *
Video Activated Relay 119,097 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 176,971 10 *
Water Detector With Sump/Bilge Pump Controller 149,877 18 *
Wire Loop Alarm Alex Meaden 202,922 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 309,483 25 *
12VDC To 120VAC Inverter 1,510,636 691
6V to 12V Converter 521,573 121
Automatic 12V Lead Acid Battery Charger 931,223 248
Automatic Load Sensing Power Switch 163,953 16 *
Car Battery Charger 877,776 159 *
Dual Polarity Power Supply 367,093 84 *
Fixed Voltage Power Supply 307,375 52 *
High Current Power Supply 333,186 66 *
High Voltage High Current Power Supply 249,338 35 *
LASER Power Supply 291,811 28
Portable CD Player Adapter For Car 209,020 12 *
Power Supply 732,643 259 *
Solid State Tesla Coil NEW! 142,085 4
Solid State Tesla Coil/High Voltage Generator 438,299 51
Transformerless Power Supply 459,029 117 *
Voltage Inverter 333,416 51 *
Voltage Inverter II 198,633 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 581,224 182
3 Watt FM Transmitter Rae XL Tkacik 329,714 83 *
50 Watt Amplifier 502,949 74
8 Note Tune Player 138,077 12 *
8 Watt Audio Amp 367,677 67 *
Aircraft Radio Communications Receiver 273,252 49 *
Crystal Radio 155,556 53 *
Digital Volume Control 334,490 47 *
Electronic Stethoscope 310,839 142 *
FET Audio Mixer 339,368 41
FM Transmitter 998,491 420
Guitar Fuzz Effect 242,695 54 *
Microphone Mixer Anatoly I. Shikhatov 246,850 26 *
Mono To Stereo Synthesizer oRbEq 129,984 18 *
One Tube Regenerative Radio NEW! 134,142 4 *
Op Amp Radio 382,468 80 *
Single Chip AM Radio NEW! 96,730 2 *
Single Chip FM Radio NEW! 167,803 1 *
Sound Level Meter 337,837 51 *
Stereo Tube Amplifier Weslee Kinsler 264,420 15 *
Tone Control 305,951 31
Transistor Organ 195,338 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 161,114 27 *
FM Telephone Bug 233,047 57
Phone Busy Indicator 211,467 24 *
Remote Telephone Ringer 115,944 3 *
Ringing Phone Light Flasher 213,224 35 *
Simple Phone Tap Derek Tombrello 380,709 98 *
Telephone Hold Button 126,426 10
Telephone Recorder 213,815 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.