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
Wednesday, November 22, 2017
12VDC To 120VAC Inverter44
Telephone Recorder40
Yesterday
Tuesday, November 21, 2017
12VDC To 120VAC Inverter90
Car Battery Charger76
Of All Time 12VDC To 120VAC Inverter1,396,277
FM Transmitter925,684

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 186,517 61 *
Car Alarm Arming Horn Beep Canceller bob 98,725 6 *
Wireless Auto Tachometer 293,832 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 130,299 29 *
Parallel (Printer) Port Interface 232,608 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 388,163 62 *
3 Channel Spectrum Analyzer 180,877 20
40W Fluorescent Lamp Inverter Bart Milnes 286,447 60 *
Adjustable Strobe Light 258,943 36
Black Light 220,842 29
Colour (Sound) Organ 243,166 36
Electronic Dice NEW! 147,689 9 *
Fantastic Atom Expander 157,646 25
Flash Slave Trigger 178,644 17 *
Infa-Red Remote Control 575,640 216 *
IR Remote Extender NEW! 87,863 2 *
IR Remote Jammer Carl 220,865 110 *
IR Remote Switch NEW! 117,892 9 *
LASER Transmitter/Receiver 358,598 92
LED Chaser 401,852 83 *
LED Metronome NEW! 77,881 3 *
LED Thermometer 172,346 22 *
Light/Dark Detector 271,305 89 *
Simple Colour Organ 108,198 10 *
Strobe Light 239,794 27 *
TRIAC Light Dimmer 450,404 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 308,100 122 *
Electromagnetic Levitator NEW! 108,798 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 849,864 214 *
AC Motor Speed Controller 332,660 29 *
Air Flow Detector 215,946 54 *
Digital Keypad Combination Lock 159,749 20
Low Voltage Alarm 189,056 58 *
Pine Racecar Victory Judge 72,823 1 *
Pulse Width Modulation DC Motor Control 604,658 93
Rain Detector 268,453 112 *
Simple Lie Detector 511,593 323
Simple Polarity Tester Dudley LeRoux 124,564 13 *
Simple Servo Controller 180,835 22 *
Simple Touch Switch NEW! 135,396 5 *
Simple Two Speed Contactor DC Motor Controller 172,408 21 *
Stepper Motor Controller 668,549 120 *
Time Delay Relay 505,456 88
Time Delay Relay II jawaharlal@excite.com 200,662 39 *
Touch Switch 252,570 51 *
Video Activated Relay 90,881 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 142,131 10 *
Water Detector With Sump/Bilge Pump Controller 116,170 18 *
Wire Loop Alarm Alex Meaden 174,314 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 262,092 25 *
12VDC To 120VAC Inverter 1,396,277 687
6V to 12V Converter 441,277 121
Automatic 12V Lead Acid Battery Charger 860,364 246
Automatic Load Sensing Power Switch 129,495 15 *
Car Battery Charger 813,459 159 *
Dual Polarity Power Supply 305,664 84 *
Fixed Voltage Power Supply 273,596 52 *
High Current Power Supply 290,774 64 *
High Voltage High Current Power Supply 217,586 35 *
LASER Power Supply 247,840 28
Portable CD Player Adapter For Car 175,257 12 *
Power Supply 678,810 259 *
Solid State Tesla Coil NEW! 112,926 3
Solid State Tesla Coil/High Voltage Generator 379,996 50
Transformerless Power Supply 413,626 117 *
Voltage Inverter 299,467 51 *
Voltage Inverter II 169,751 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 538,786 182
3 Watt FM Transmitter Rae XL Tkacik 290,585 81 *
50 Watt Amplifier 454,660 74
8 Note Tune Player 112,145 12 *
8 Watt Audio Amp 322,945 67 *
Aircraft Radio Communications Receiver 227,096 49 *
Crystal Radio 132,991 53 *
Digital Volume Control 291,607 47 *
Electronic Stethoscope 267,282 141 *
FET Audio Mixer 297,764 40
FM Transmitter 925,684 418
Guitar Fuzz Effect 200,683 52 *
Microphone Mixer Anatoly I. Shikhatov 209,480 26 *
Mono To Stereo Synthesizer oRbEq 94,940 18 *
One Tube Regenerative Radio NEW! 99,834 4 *
Op Amp Radio 336,640 80 *
Single Chip AM Radio NEW! 76,730 2 *
Single Chip FM Radio NEW! 128,098 1 *
Sound Level Meter 299,308 51 *
Stereo Tube Amplifier Weslee Kinsler 228,299 15 *
Tone Control 263,237 31
Transistor Organ 158,669 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 134,178 27 *
FM Telephone Bug 198,453 57
Phone Busy Indicator 178,102 24 *
Remote Telephone Ringer 90,362 3 *
Ringing Phone Light Flasher 177,017 33 *
Simple Phone Tap Derek Tombrello 326,207 98 *
Telephone Hold Button 94,484 9
Telephone Recorder 179,091 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.