Electronic Circuits


Home > Electronics > Electronic Circuits

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
Tuesday, April 21, 2015
Automatic 12V Lead Acid Battery Charger97
7 Segment LED Counter59
Yesterday
Monday, April 20, 2015
Automatic 12V Lead Acid Battery Charger241
7 Segment LED Counter192
Of All Time 12VDC To 120VAC Inverter1,283,549
FM Transmitter865,462

Auto

Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 171,242 61 *
Car Alarm Arming Horn Beep Canceller bob 87,072 6 *
Wireless Auto Tachometer 273,713 58

Computer

Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 114,529 29 *
Parallel (Printer) Port Interface 215,596 71

Light/Laser

Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 358,437 62 *
3 Channel Spectrum Analyzer 155,367 19
40W Fluorescent Lamp Inverter Bart Milnes 263,053 60 *
Adjustable Strobe Light 233,315 36
Black Light 198,312 29
Colour (Sound) Organ 220,540 34
Electronic Dice NEW! 127,375 8 *
Fantastic Atom Expander 137,777 24
Flash Slave Trigger 161,570 17 *
Infa-Red Remote Control 538,353 216 *
IR Remote Extender NEW! 70,111 2 *
IR Remote Jammer Carl 200,154 110 *
IR Remote Switch NEW! 100,096 9 *
LASER Transmitter/Receiver 328,213 91
LED Chaser 373,397 83 *
LED Metronome NEW! 64,247 3 *
LED Thermometer 155,609 22 *
Light/Dark Detector 238,505 89 *
Simple Colour Organ 94,741 10 *
Strobe Light 217,749 27 *
TRIAC Light Dimmer 410,316 54

Major Projects

Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 284,949 122 *
Electromagnetic Levitator NEW! 90,000 15 *

Other

Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
7 Segment LED Counter 788,118 214 *
AC Motor Speed Controller 294,483 29 *
Air Flow Detector 192,611 54 *
Digital Keypad Combination Lock 142,905 20
Low Voltage Alarm 166,354 58 *
Pine Racecar Victory Judge 61,764 1 *
Pulse Width Modulation DC Motor Control 564,681 93
Rain Detector 244,198 111 *
Simple Lie Detector 474,837 321
Simple Polarity Tester Dudley LeRoux 105,152 13 *
Simple Servo Controller 160,264 22 *
Simple Touch Switch NEW! 114,823 5 *
Simple Two Speed Contactor DC Motor Controller 154,267 21 *
Stepper Motor Controller 619,634 120 *
Time Delay Relay 460,758 86
Time Delay Relay II jawaharlal@excite.com 181,419 39 *
Touch Switch 231,006 51 *
Video Activated Relay 75,980 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 125,245 9 *
Water Detector With Sump/Bilge Pump Controller 102,777 18 *
Wire Loop Alarm Alex Meaden 156,286 27 *

Power Supply

Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 221,292 24 *
12VDC To 120VAC Inverter 1,283,549 684
6V to 12V Converter 392,648 121
Automatic 12V Lead Acid Battery Charger 770,679 239
Automatic Load Sensing Power Switch 111,975 14 *
Car Battery Charger 760,509 158 *
Dual Polarity Power Supply 268,251 84 *
Fixed Voltage Power Supply 249,274 52 *
High Current Power Supply 260,804 64 *
High Voltage High Current Power Supply 196,750 34 *
LASER Power Supply 220,866 28
Portable CD Player Adapter For Car 154,244 12 *
Power Supply 630,611 258 *
Solid State Tesla Coil NEW! 93,333 3
Solid State Tesla Coil/High Voltage Generator 338,142 49
Transformerless Power Supply 380,944 116 *
Voltage Inverter 271,475 51 *
Voltage Inverter II 155,027 19 *

Sound/Radio

Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 500,917 182
3 Watt FM Transmitter Rae XL Tkacik 260,867 80 *
50 Watt Amplifier 414,829 73
8 Note Tune Player 97,325 12 *
8 Watt Audio Amp 289,592 66 *
Aircraft Radio Communications Receiver 198,000 49 *
Crystal Radio 116,496 53 *
Digital Volume Control 267,211 46 *
Electronic Stethoscope 232,509 139 *
FET Audio Mixer 268,866 40
FM Transmitter 865,462 418
Guitar Fuzz Effect 176,779 51 *
Microphone Mixer Anatoly I. Shikhatov 185,567 25 *
Mono To Stereo Synthesizer oRbEq 78,226 17 *
One Tube Regenerative Radio NEW! 78,005 4 *
Op Amp Radio 300,977 80 *
Single Chip AM Radio NEW! 53,028 2 *
Single Chip FM Radio NEW! 99,147 0 *
Sound Level Meter 272,407 51 *
Stereo Tube Amplifier Weslee Kinsler 209,180 15 *
Tone Control 236,591 30
Transistor Organ 138,757 28

Telephone

Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 122,046 27 *
FM Telephone Bug 182,022 57
Phone Busy Indicator 145,842 24 *
Remote Telephone Ringer 78,881 3 *
Ringing Phone Light Flasher 156,214 32 *
Simple Phone Tap Derek Tombrello 306,372 98 *
Telephone Hold Button 78,253 9
Telephone Recorder 162,970 54 *


Back To Electronics Page | Mail Me | Search


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.