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, August 19, 2022
12VDC To 120VAC Inverter30
Mono To Stereo Synthesizer25
Yesterday
Thursday, August 18, 2022
12VDC To 120VAC Inverter36
Dual Polarity Power Supply28
Of All Time 12VDC To 120VAC Inverter1,504,295
FM Transmitter993,768

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 222,236 61 *
Car Alarm Arming Horn Beep Canceller bob 132,234 6 *
Wireless Auto Tachometer 337,292 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 155,724 29 *
Parallel (Printer) Port Interface 278,921 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 440,781 63 *
3 Channel Spectrum Analyzer 215,685 20
40W Fluorescent Lamp Inverter Bart Milnes 324,796 60 *
Adjustable Strobe Light 302,564 36
Black Light 271,133 29
Colour (Sound) Organ 284,240 36
Electronic Dice NEW! 183,756 10 *
Fantastic Atom Expander 198,451 25
Flash Slave Trigger 215,316 18 *
Infa-Red Remote Control 627,499 216 *
IR Remote Extender NEW! 126,961 2 *
IR Remote Jammer Carl 259,426 110 *
IR Remote Switch NEW! 153,101 9 *
LASER Transmitter/Receiver 406,925 92
LED Chaser 438,902 83 *
LED Metronome NEW! 95,490 3 *
LED Thermometer 202,274 22 *
Light/Dark Detector 301,563 90 *
Simple Colour Organ 133,498 11 *
Strobe Light 270,308 27 *
TRIAC Light Dimmer 544,373 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 353,721 122 *
Electromagnetic Levitator NEW! 139,499 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 914,434 214 *
AC Motor Speed Controller 381,635 29 *
Air Flow Detector 246,939 54 *
Digital Keypad Combination Lock 192,236 20
Low Voltage Alarm 224,411 58 *
Pine Racecar Victory Judge 99,111 1 *
Pulse Width Modulation DC Motor Control 642,203 94
Rain Detector 299,789 112 *
Simple Lie Detector 554,587 323
Simple Polarity Tester Dudley LeRoux 160,554 13 *
Simple Servo Controller 216,288 22 *
Simple Touch Switch NEW! 164,912 5 *
Simple Two Speed Contactor DC Motor Controller 200,108 21 *
Stepper Motor Controller 736,687 120 *
Time Delay Relay 549,706 88
Time Delay Relay II jawaharlal@excite.com 240,364 39 *
Touch Switch 284,556 51 *
Video Activated Relay 117,530 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 175,104 10 *
Water Detector With Sump/Bilge Pump Controller 148,260 18 *
Wire Loop Alarm Alex Meaden 201,315 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 307,168 25 *
12VDC To 120VAC Inverter 1,504,295 690
6V to 12V Converter 519,049 121
Automatic 12V Lead Acid Battery Charger 927,875 248
Automatic Load Sensing Power Switch 162,118 16 *
Car Battery Charger 874,547 159 *
Dual Polarity Power Supply 365,095 84 *
Fixed Voltage Power Supply 305,247 52 *
High Current Power Supply 330,840 66 *
High Voltage High Current Power Supply 247,473 35 *
LASER Power Supply 289,561 28
Portable CD Player Adapter For Car 207,031 12 *
Power Supply 730,357 259 *
Solid State Tesla Coil NEW! 140,166 4
Solid State Tesla Coil/High Voltage Generator 435,595 51
Transformerless Power Supply 456,902 117 *
Voltage Inverter 331,305 51 *
Voltage Inverter II 196,533 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 579,058 182
3 Watt FM Transmitter Rae XL Tkacik 327,543 83 *
50 Watt Amplifier 500,579 74
8 Note Tune Player 136,579 12 *
8 Watt Audio Amp 365,537 67 *
Aircraft Radio Communications Receiver 270,722 49 *
Crystal Radio 154,401 53 *
Digital Volume Control 327,150 47 *
Electronic Stethoscope 308,159 142 *
FET Audio Mixer 337,223 41
FM Transmitter 993,768 420
Guitar Fuzz Effect 240,449 54 *
Microphone Mixer Anatoly I. Shikhatov 245,028 26 *
Mono To Stereo Synthesizer oRbEq 128,215 18 *
One Tube Regenerative Radio NEW! 131,469 4 *
Op Amp Radio 379,921 80 *
Single Chip AM Radio NEW! 95,349 2 *
Single Chip FM Radio NEW! 165,757 1 *
Sound Level Meter 335,704 51 *
Stereo Tube Amplifier Weslee Kinsler 262,476 15 *
Tone Control 303,730 31
Transistor Organ 193,476 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 159,555 27 *
FM Telephone Bug 231,675 57
Phone Busy Indicator 209,866 24 *
Remote Telephone Ringer 114,549 3 *
Ringing Phone Light Flasher 211,110 35 *
Simple Phone Tap Derek Tombrello 379,175 98 *
Telephone Hold Button 124,811 10
Telephone Recorder 212,127 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.