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, November 17, 2019
Stepper Motor Controller45
Wireless Auto Tachometer43
Yesterday
Saturday, November 16, 2019
6V to 12V Converter5,400
6V to 12V Converter5,400
Of All Time 12VDC To 120VAC Inverter1,451,781
FM Transmitter959,346

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 201,677 61 *
Car Alarm Arming Horn Beep Canceller bob 112,747 6 *
Wireless Auto Tachometer 313,487 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 140,958 29 *
Parallel (Printer) Port Interface 253,536 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 410,006 63 *
3 Channel Spectrum Analyzer 196,950 20
40W Fluorescent Lamp Inverter Bart Milnes 303,162 60 *
Adjustable Strobe Light 277,930 36
Black Light 241,251 29
Colour (Sound) Organ 260,475 36
Electronic Dice NEW! 162,785 10 *
Fantastic Atom Expander 175,089 25
Flash Slave Trigger 193,340 18 *
Infa-Red Remote Control 599,837 216 *
IR Remote Extender NEW! 104,222 2 *
IR Remote Jammer Carl 236,962 110 *
IR Remote Switch NEW! 133,266 9 *
LASER Transmitter/Receiver 378,792 92
LED Chaser 419,650 83 *
LED Metronome NEW! 86,634 3 *
LED Thermometer 186,168 22 *
Light/Dark Detector 284,140 90 *
Simple Colour Organ 119,319 10 *
Strobe Light 252,866 27 *
TRIAC Light Dimmer 471,735 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 326,862 122 *
Electromagnetic Levitator NEW! 123,207 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 882,955 214 *
AC Motor Speed Controller 357,928 29 *
Air Flow Detector 230,301 54 *
Digital Keypad Combination Lock 175,862 20
Low Voltage Alarm 204,540 58 *
Pine Racecar Victory Judge 85,334 1 *
Pulse Width Modulation DC Motor Control 622,384 94
Rain Detector 283,709 112 *
Simple Lie Detector 534,835 323
Simple Polarity Tester Dudley LeRoux 139,819 13 *
Simple Servo Controller 198,803 22 *
Simple Touch Switch NEW! 148,969 5 *
Simple Two Speed Contactor DC Motor Controller 184,014 21 *
Stepper Motor Controller 709,603 120 *
Time Delay Relay 528,478 88
Time Delay Relay II jawaharlal@excite.com 217,986 39 *
Touch Switch 266,893 51 *
Video Activated Relay 102,980 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 157,723 10 *
Water Detector With Sump/Bilge Pump Controller 128,858 18 *
Wire Loop Alarm Alex Meaden 185,890 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 286,289 25 *
12VDC To 120VAC Inverter 1,451,781 689
6V to 12V Converter 479,554 121
Automatic 12V Lead Acid Battery Charger 896,626 247
Automatic Load Sensing Power Switch 143,294 16 *
Car Battery Charger 848,220 159 *
Dual Polarity Power Supply 350,592 84 *
Fixed Voltage Power Supply 287,257 52 *
High Current Power Supply 309,197 65 *
High Voltage High Current Power Supply 230,468 35 *
LASER Power Supply 269,295 28
Portable CD Player Adapter For Car 188,813 12 *
Power Supply 706,867 259 *
Solid State Tesla Coil NEW! 126,902 4
Solid State Tesla Coil/High Voltage Generator 407,993 50
Transformerless Power Supply 436,468 117 *
Voltage Inverter 312,669 51 *
Voltage Inverter II 180,356 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 558,220 182
3 Watt FM Transmitter Rae XL Tkacik 306,974 82 *
50 Watt Amplifier 479,080 74
8 Note Tune Player 122,135 12 *
8 Watt Audio Amp 343,714 67 *
Aircraft Radio Communications Receiver 247,378 49 *
Crystal Radio 144,938 53 *
Digital Volume Control 308,327 47 *
Electronic Stethoscope 285,768 141 *
FET Audio Mixer 316,520 41
FM Transmitter 959,346 419
Guitar Fuzz Effect 220,302 52 *
Microphone Mixer Anatoly I. Shikhatov 227,062 26 *
Mono To Stereo Synthesizer oRbEq 110,066 18 *
One Tube Regenerative Radio NEW! 115,667 4 *
Op Amp Radio 356,738 80 *
Single Chip AM Radio NEW! 85,879 2 *
Single Chip FM Radio NEW! 147,153 1 *
Sound Level Meter 317,564 51 *
Stereo Tube Amplifier Weslee Kinsler 244,866 15 *
Tone Control 282,230 31
Transistor Organ 174,444 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 144,410 27 *
FM Telephone Bug 216,150 57
Phone Busy Indicator 194,970 24 *
Remote Telephone Ringer 99,630 3 *
Ringing Phone Light Flasher 191,517 35 *
Simple Phone Tap Derek Tombrello 343,437 98 *
Telephone Hold Button 109,276 10
Telephone Recorder 192,936 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.