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
Monday, March 25, 2019
Time Delay Relay II21
Power Supply20
Yesterday
Sunday, March 24, 2019
Solid State Tesla Coil/High Voltage Generator68
Car Battery Charger67
Of All Time 12VDC To 120VAC Inverter1,432,026
FM Transmitter947,689

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 196,884 61 *
Car Alarm Arming Horn Beep Canceller bob 108,056 6 *
Wireless Auto Tachometer 305,414 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 137,044 29 *
Parallel (Printer) Port Interface 244,903 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 401,663 63 *
3 Channel Spectrum Analyzer 192,126 20
40W Fluorescent Lamp Inverter Bart Milnes 296,780 60 *
Adjustable Strobe Light 271,847 36
Black Light 233,403 29
Colour (Sound) Organ 254,605 36
Electronic Dice NEW! 157,200 10 *
Fantastic Atom Expander 169,096 25
Flash Slave Trigger 188,245 18 *
Infa-Red Remote Control 592,910 216 *
IR Remote Extender NEW! 98,080 2 *
IR Remote Jammer Carl 231,734 110 *
IR Remote Switch NEW! 128,017 9 *
LASER Transmitter/Receiver 371,781 92
LED Chaser 413,981 83 *
LED Metronome NEW! 83,730 3 *
LED Thermometer 181,696 22 *
Light/Dark Detector 279,700 90 *
Simple Colour Organ 116,031 10 *
Strobe Light 248,784 27 *
TRIAC Light Dimmer 462,652 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 319,731 122 *
Electromagnetic Levitator NEW! 118,859 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 871,264 214 *
AC Motor Speed Controller 349,628 29 *
Air Flow Detector 225,965 54 *
Digital Keypad Combination Lock 170,061 20
Low Voltage Alarm 199,880 58 *
Pine Racecar Victory Judge 80,648 1 *
Pulse Width Modulation DC Motor Control 616,666 93
Rain Detector 279,468 112 *
Simple Lie Detector 527,333 323
Simple Polarity Tester Dudley LeRoux 134,528 13 *
Simple Servo Controller 192,194 22 *
Simple Touch Switch NEW! 145,132 5 *
Simple Two Speed Contactor DC Motor Controller 179,660 21 *
Stepper Motor Controller 701,031 120 *
Time Delay Relay 521,391 88
Time Delay Relay II jawaharlal@excite.com 211,973 39 *
Touch Switch 262,457 51 *
Video Activated Relay 99,577 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 152,512 10 *
Water Detector With Sump/Bilge Pump Controller 125,082 18 *
Wire Loop Alarm Alex Meaden 181,962 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 278,128 25 *
12VDC To 120VAC Inverter 1,432,026 688
6V to 12V Converter 460,609 121
Automatic 12V Lead Acid Battery Charger 884,703 246
Automatic Load Sensing Power Switch 138,548 16 *
Car Battery Charger 838,102 159 *
Dual Polarity Power Supply 345,262 84 *
Fixed Voltage Power Supply 282,691 52 *
High Current Power Supply 301,925 65 *
High Voltage High Current Power Supply 226,206 35 *
LASER Power Supply 261,489 28
Portable CD Player Adapter For Car 184,428 12 *
Power Supply 697,658 259 *
Solid State Tesla Coil NEW! 122,796 4
Solid State Tesla Coil/High Voltage Generator 398,624 50
Transformerless Power Supply 425,024 117 *
Voltage Inverter 308,048 51 *
Voltage Inverter II 176,721 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 552,410 182
3 Watt FM Transmitter Rae XL Tkacik 301,510 82 *
50 Watt Amplifier 472,034 74
8 Note Tune Player 118,772 12 *
8 Watt Audio Amp 336,450 67 *
Aircraft Radio Communications Receiver 240,074 49 *
Crystal Radio 140,522 53 *
Digital Volume Control 302,079 47 *
Electronic Stethoscope 279,722 141 *
FET Audio Mixer 311,195 41
FM Transmitter 947,689 419
Guitar Fuzz Effect 213,396 52 *
Microphone Mixer Anatoly I. Shikhatov 220,410 26 *
Mono To Stereo Synthesizer oRbEq 104,489 18 *
One Tube Regenerative Radio NEW! 109,821 4 *
Op Amp Radio 350,515 80 *
Single Chip AM Radio NEW! 82,962 2 *
Single Chip FM Radio NEW! 140,237 1 *
Sound Level Meter 310,687 51 *
Stereo Tube Amplifier Weslee Kinsler 238,381 15 *
Tone Control 275,093 31
Transistor Organ 168,452 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 140,758 27 *
FM Telephone Bug 209,816 57
Phone Busy Indicator 189,571 24 *
Remote Telephone Ringer 96,438 3 *
Ringing Phone Light Flasher 186,394 34 *
Simple Phone Tap Derek Tombrello 335,766 98 *
Telephone Hold Button 103,475 10
Telephone Recorder 187,456 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.