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, October 07, 2024		 Electronic Stethoscope6
FM Transmitter5
Yesterday
Sunday, October 06, 2024		 12VDC To 120VAC Inverter33
Stepper Motor Controller31
Of All Time 12VDC To 120VAC Inverter1,537,934
FM Transmitter1,014,733

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 228,970 61 *
Car Alarm Arming Horn Beep Canceller bob 138,472 6 *
Wireless Auto Tachometer 345,454 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 161,713 29 *
Parallel (Printer) Port Interface 289,412 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 450,482 63 *
3 Channel Spectrum Analyzer 224,602 20
40W Fluorescent Lamp Inverter Bart Milnes 332,295 60 *
Adjustable Strobe Light 311,720 36
Black Light 284,178 29
Colour (Sound) Organ 293,407 36
Electronic Dice NEW! 191,361 10 *
Fantastic Atom Expander 205,028 25
Flash Slave Trigger 223,766 18 *
Infa-Red Remote Control 640,148 216 *
IR Remote Extender NEW! 135,027 3 *
IR Remote Jammer Carl 268,893 110 *
IR Remote Switch NEW! 159,646 9 *
LASER Transmitter/Receiver 420,104 92
LED Chaser 449,040 83 *
LED Metronome NEW! 101,623 3 *
LED Thermometer 208,987 22 *
Light/Dark Detector 308,168 90 *
Simple Colour Organ 139,409 11 *
Strobe Light 277,927 27 *
TRIAC Light Dimmer 556,259 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 363,053 122 *
Electromagnetic Levitator NEW! 146,493 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 925,914 214 *
AC Motor Speed Controller 395,191 29 *
Air Flow Detector 254,107 54 *
Digital Keypad Combination Lock 204,255 20
Low Voltage Alarm 231,587 58 *
Pine Racecar Victory Judge 104,636 1 *
Pulse Width Modulation DC Motor Control 658,084 94
Rain Detector 307,235 112 *
Simple Lie Detector 567,692 323
Simple Polarity Tester Dudley LeRoux 167,710 13 *
Simple Servo Controller 223,987 22 *
Simple Touch Switch NEW! 172,217 6 *
Simple Two Speed Contactor DC Motor Controller 207,532 21 *
Stepper Motor Controller 751,149 120 *
Time Delay Relay 558,564 88
Time Delay Relay II jawaharlal@excite.com 249,882 39 *
Touch Switch 292,305 51 *
Video Activated Relay 123,944 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 184,018 10 *
Water Detector With Sump/Bilge Pump Controller 155,255 18 *
Wire Loop Alarm Alex Meaden 207,838 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 319,864 25 *
12VDC To 120VAC Inverter 1,537,934 691
6V to 12V Converter 531,198 121
Automatic 12V Lead Acid Battery Charger 940,737 248
Automatic Load Sensing Power Switch 169,977 16 *
Car Battery Charger 886,580 159 *
Dual Polarity Power Supply 374,130 84 *
Fixed Voltage Power Supply 314,091 52 *
High Current Power Supply 342,740 66 *
High Voltage High Current Power Supply 266,680 35 *
LASER Power Supply 299,157 28
Portable CD Player Adapter For Car 214,598 12 *
Power Supply 742,667 259 *
Solid State Tesla Coil NEW! 149,248 4
Solid State Tesla Coil/High Voltage Generator 448,115 51
Transformerless Power Supply 466,396 117 *
Voltage Inverter 343,214 51 *
Voltage Inverter II 206,147 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 588,416 182
3 Watt FM Transmitter Rae XL Tkacik 339,191 83 *
50 Watt Amplifier 511,450 74
8 Note Tune Player 143,078 12 *
8 Watt Audio Amp 376,939 67 *
Aircraft Radio Communications Receiver 282,255 49 *
Crystal Radio 161,627 53 *
Digital Volume Control 341,614 47 *
Electronic Stethoscope 324,632 142 *
FET Audio Mixer 346,531 41
FM Transmitter 1,014,733 420
Guitar Fuzz Effect 250,635 54 *
Microphone Mixer Anatoly I. Shikhatov 253,475 26 *
Mono To Stereo Synthesizer oRbEq 136,804 18 *
One Tube Regenerative Radio NEW! 146,756 4 *
Op Amp Radio 393,048 80 *
Single Chip AM Radio NEW! 102,354 3 *
Single Chip FM Radio NEW! 175,566 1 *
Sound Level Meter 344,897 51 *
Stereo Tube Amplifier Weslee Kinsler 271,168 15 *
Tone Control 312,802 31
Transistor Organ 202,708 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 165,830 27 *
FM Telephone Bug 237,407 57
Phone Busy Indicator 216,161 24 *
Remote Telephone Ringer 120,402 3 *
Ringing Phone Light Flasher 221,421 35 *
Simple Phone Tap Derek Tombrello 386,039 98 *
Telephone Hold Button 131,293 10
Telephone Recorder 218,938 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.