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, April 22, 2018
Colour (Sound) Organ4
Light/Dark Detector3
Yesterday
Saturday, April 21, 2018
Dual Polarity Power Supply80
12VDC To 120VAC Inverter73
Of All Time 12VDC To 120VAC Inverter1,408,718
FM Transmitter932,681

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 188,822 61 *
Car Alarm Arming Horn Beep Canceller bob 100,717 6 *
Wireless Auto Tachometer 296,505 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 132,262 29 *
Parallel (Printer) Port Interface 235,218 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 391,793 63 *
3 Channel Spectrum Analyzer 184,297 20
40W Fluorescent Lamp Inverter Bart Milnes 289,303 60 *
Adjustable Strobe Light 262,121 36
Black Light 223,972 29
Colour (Sound) Organ 246,193 36
Electronic Dice NEW! 150,043 10 *
Fantastic Atom Expander 160,391 25
Flash Slave Trigger 180,888 18 *
Infa-Red Remote Control 579,544 216 *
IR Remote Extender NEW! 90,606 2 *
IR Remote Jammer Carl 223,870 110 *
IR Remote Switch NEW! 121,031 9 *
LASER Transmitter/Receiver 361,924 92
LED Chaser 405,268 83 *
LED Metronome NEW! 80,083 3 *
LED Thermometer 175,131 22 *
Light/Dark Detector 274,088 90 *
Simple Colour Organ 110,224 10 *
Strobe Light 242,015 27 *
TRIAC Light Dimmer 454,466 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 311,017 122 *
Electromagnetic Levitator NEW! 111,526 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 855,635 214 *
AC Motor Speed Controller 336,993 29 *
Air Flow Detector 218,613 54 *
Digital Keypad Combination Lock 162,271 20
Low Voltage Alarm 191,753 58 *
Pine Racecar Victory Judge 74,713 1 *
Pulse Width Modulation DC Motor Control 608,627 93
Rain Detector 270,858 112 *
Simple Lie Detector 515,647 323
Simple Polarity Tester Dudley LeRoux 127,202 13 *
Simple Servo Controller 183,623 22 *
Simple Touch Switch NEW! 137,846 5 *
Simple Two Speed Contactor DC Motor Controller 174,784 21 *
Stepper Motor Controller 677,271 120 *
Time Delay Relay 510,407 88
Time Delay Relay II jawaharlal@excite.com 203,365 39 *
Touch Switch 255,106 51 *
Video Activated Relay 92,967 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 144,875 10 *
Water Detector With Sump/Bilge Pump Controller 118,762 18 *
Wire Loop Alarm Alex Meaden 176,574 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 266,346 25 *
12VDC To 120VAC Inverter 1,408,718 688
6V to 12V Converter 447,882 121
Automatic 12V Lead Acid Battery Charger 870,435 246
Automatic Load Sensing Power Switch 132,212 16 *
Car Battery Charger 821,370 159 *
Dual Polarity Power Supply 315,452 84 *
Fixed Voltage Power Supply 276,369 52 *
High Current Power Supply 293,675 65 *
High Voltage High Current Power Supply 220,090 35 *
LASER Power Supply 251,111 28
Portable CD Player Adapter For Car 178,064 12 *
Power Supply 684,591 259 *
Solid State Tesla Coil NEW! 116,359 4
Solid State Tesla Coil/High Voltage Generator 385,145 50
Transformerless Power Supply 417,120 117 *
Voltage Inverter 302,450 51 *
Voltage Inverter II 171,830 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 543,463 182
3 Watt FM Transmitter Rae XL Tkacik 294,163 82 *
50 Watt Amplifier 459,600 74
8 Note Tune Player 114,247 12 *
8 Watt Audio Amp 326,520 67 *
Aircraft Radio Communications Receiver 230,564 49 *
Crystal Radio 134,974 53 *
Digital Volume Control 294,741 47 *
Electronic Stethoscope 271,545 141 *
FET Audio Mixer 302,113 41
FM Transmitter 932,681 419
Guitar Fuzz Effect 203,706 52 *
Microphone Mixer Anatoly I. Shikhatov 212,943 26 *
Mono To Stereo Synthesizer oRbEq 97,059 18 *
One Tube Regenerative Radio NEW! 102,805 4 *
Op Amp Radio 342,166 80 *
Single Chip AM Radio NEW! 78,935 2 *
Single Chip FM Radio NEW! 131,402 1 *
Sound Level Meter 302,591 51 *
Stereo Tube Amplifier Weslee Kinsler 230,897 15 *
Tone Control 266,583 31
Transistor Organ 161,400 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 135,933 27 *
FM Telephone Bug 200,986 57
Phone Busy Indicator 182,421 24 *
Remote Telephone Ringer 92,155 3 *
Ringing Phone Light Flasher 180,077 34 *
Simple Phone Tap Derek Tombrello 328,226 98 *
Telephone Hold Button 96,397 10
Telephone Recorder 181,261 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.