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, March 25, 2023
12VDC To 120VAC Inverter38
Wireless Auto Tachometer36
Yesterday
Friday, March 24, 2023
12VDC To 120VAC Inverter33
AC Motor Speed Controller23
Of All Time 12VDC To 120VAC Inverter1,512,592
FM Transmitter999,953

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 224,372 61 *
Car Alarm Arming Horn Beep Canceller bob 134,219 6 *
Wireless Auto Tachometer 339,911 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 157,772 29 *
Parallel (Printer) Port Interface 281,926 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 444,012 63 *
3 Channel Spectrum Analyzer 218,238 20
40W Fluorescent Lamp Inverter Bart Milnes 327,319 60 *
Adjustable Strobe Light 305,548 36
Black Light 275,375 29
Colour (Sound) Organ 287,143 36
Electronic Dice NEW! 186,090 10 *
Fantastic Atom Expander 200,574 25
Flash Slave Trigger 218,493 18 *
Infa-Red Remote Control 630,516 216 *
IR Remote Extender NEW! 129,411 2 *
IR Remote Jammer Carl 262,169 110 *
IR Remote Switch NEW! 155,110 9 *
LASER Transmitter/Receiver 411,111 92
LED Chaser 442,385 83 *
LED Metronome NEW! 97,143 3 *
LED Thermometer 204,312 22 *
Light/Dark Detector 303,573 90 *
Simple Colour Organ 135,398 11 *
Strobe Light 272,684 27 *
TRIAC Light Dimmer 547,864 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 356,196 122 *
Electromagnetic Levitator NEW! 141,617 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 917,927 214 *
AC Motor Speed Controller 385,270 29 *
Air Flow Detector 249,184 54 *
Digital Keypad Combination Lock 194,237 20
Low Voltage Alarm 226,646 58 *
Pine Racecar Victory Judge 100,846 1 *
Pulse Width Modulation DC Motor Control 644,969 94
Rain Detector 301,979 112 *
Simple Lie Detector 560,398 323
Simple Polarity Tester Dudley LeRoux 162,829 13 *
Simple Servo Controller 218,581 22 *
Simple Touch Switch NEW! 167,011 6 *
Simple Two Speed Contactor DC Motor Controller 202,196 21 *
Stepper Motor Controller 740,533 120 *
Time Delay Relay 552,239 88
Time Delay Relay II jawaharlal@excite.com 243,343 39 *
Touch Switch 286,879 51 *
Video Activated Relay 119,533 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 177,590 10 *
Water Detector With Sump/Bilge Pump Controller 150,320 18 *
Wire Loop Alarm Alex Meaden 203,368 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 310,172 25 *
12VDC To 120VAC Inverter 1,512,592 691
6V to 12V Converter 522,336 121
Automatic 12V Lead Acid Battery Charger 932,081 248
Automatic Load Sensing Power Switch 164,459 16 *
Car Battery Charger 878,981 159 *
Dual Polarity Power Supply 367,695 84 *
Fixed Voltage Power Supply 308,029 52 *
High Current Power Supply 333,943 66 *
High Voltage High Current Power Supply 249,882 35 *
LASER Power Supply 292,458 28
Portable CD Player Adapter For Car 209,527 12 *
Power Supply 733,438 259 *
Solid State Tesla Coil NEW! 142,595 4
Solid State Tesla Coil/High Voltage Generator 439,057 51
Transformerless Power Supply 459,621 117 *
Voltage Inverter 334,030 51 *
Voltage Inverter II 199,250 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 581,819 182
3 Watt FM Transmitter Rae XL Tkacik 330,347 83 *
50 Watt Amplifier 503,695 74
8 Note Tune Player 138,505 12 *
8 Watt Audio Amp 368,323 67 *
Aircraft Radio Communications Receiver 273,898 49 *
Crystal Radio 156,298 53 *
Digital Volume Control 335,052 47 *
Electronic Stethoscope 311,537 142 *
FET Audio Mixer 339,971 41
FM Transmitter 999,953 420
Guitar Fuzz Effect 243,377 54 *
Microphone Mixer Anatoly I. Shikhatov 247,427 26 *
Mono To Stereo Synthesizer oRbEq 130,536 18 *
One Tube Regenerative Radio NEW! 135,046 4 *
Op Amp Radio 383,313 80 *
Single Chip AM Radio NEW! 97,149 3 *
Single Chip FM Radio NEW! 168,584 1 *
Sound Level Meter 338,548 51 *
Stereo Tube Amplifier Weslee Kinsler 265,035 15 *
Tone Control 306,557 31
Transistor Organ 196,020 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 161,528 27 *
FM Telephone Bug 233,458 57
Phone Busy Indicator 211,941 24 *
Remote Telephone Ringer 116,328 3 *
Ringing Phone Light Flasher 213,814 35 *
Simple Phone Tap Derek Tombrello 381,179 98 *
Telephone Hold Button 126,877 10
Telephone Recorder 214,266 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.