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 Wednesday, August 05, 2020	Car Alarm Arming Horn Beep Canceller	10
	12VDC To 120VAC Inverter	8
Yesterday Tuesday, August 04, 2020	6V to 12V Converter	111
	Solid State Tesla Coil/High Voltage Generator	48
Of All Time	12VDC To 120VAC Inverter	1,468,896
	FM Transmitter	970,619

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		210,743		61	*
Car Alarm Arming Horn Beep Canceller	bob	121,874		6	*
Wireless Auto Tachometer		324,019		58

Computer

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computer Controlled Frequency Counter/Logic Probe	Richard van Wyk	147,087		29	*
Parallel (Printer) Port Interface		264,236		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		424,147		63	*
3 Channel Spectrum Analyzer		204,089		20
40W Fluorescent Lamp Inverter	Bart Milnes	312,895		60	*
Adjustable Strobe Light		288,470		36
Black Light		253,407		29
Colour (Sound) Organ		270,668		36
Electronic Dice NEW!		172,286		10	*
Fantastic Atom Expander		185,307		25
Flash Slave Trigger		202,846		18	*
Infa-Red Remote Control		612,600		216	*
IR Remote Extender NEW!		114,436		2	*
IR Remote Jammer	Carl	245,121		110	*
IR Remote Switch NEW!		142,731		9	*
LASER Transmitter/Receiver		389,922		92
LED Chaser		426,971		83	*
LED Metronome NEW!		89,293		3	*
LED Thermometer		193,073		22	*
Light/Dark Detector		291,233		90	*
Simple Colour Organ		125,173		10	*
Strobe Light		259,575		27	*
TRIAC Light Dimmer		481,899		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		339,934		122	*
Electromagnetic Levitator NEW!		129,859		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		896,094		214	*
AC Motor Speed Controller		366,475		29	*
Air Flow Detector		236,996		54	*
Digital Keypad Combination Lock		182,484		20
Low Voltage Alarm		212,027		58	*
Pine Racecar Victory Judge		90,982		1	*
Pulse Width Modulation DC Motor Control		630,165		94
Rain Detector		290,148		112	*
Simple Lie Detector		542,782		323
Simple Polarity Tester	Dudley LeRoux	149,483		13	*
Simple Servo Controller		205,499		22	*
Simple Touch Switch NEW!		155,150		5	*
Simple Two Speed Contactor DC Motor Controller		190,503		21	*
Stepper Motor Controller		719,437		120	*
Time Delay Relay		538,577		88
Time Delay Relay II	jawaharlal@excite.com	227,804		39	*
Touch Switch		274,068		51	*
Video Activated Relay		108,984		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	164,780		10	*
Water Detector With Sump/Bilge Pump Controller		136,078		18	*
Wire Loop Alarm	Alex Meaden	191,979		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		294,619		25	*
12VDC To 120VAC Inverter		1,468,896		689
6V to 12V Converter		500,210		121
Automatic 12V Lead Acid Battery Charger		908,557		247
Automatic Load Sensing Power Switch		150,514		16	*
Car Battery Charger		859,241		159	*
Dual Polarity Power Supply		355,058		84	*
Fixed Voltage Power Supply		294,059		52	*
High Current Power Supply		318,183		65	*
High Voltage High Current Power Supply		237,360		35	*
LASER Power Supply		277,249		28
Portable CD Player Adapter For Car		195,890		12	*
Power Supply		716,435		259	*
Solid State Tesla Coil NEW!		131,152		4
Solid State Tesla Coil/High Voltage Generator		418,087		50
Transformerless Power Supply		444,364		117	*
Voltage Inverter		317,692		51	*
Voltage Inverter II		186,602		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		566,549		182
3 Watt FM Transmitter	Rae XL Tkacik	315,004		82	*
50 Watt Amplifier		487,896		74
8 Note Tune Player		128,127		12	*
8 Watt Audio Amp		351,983		67	*
Aircraft Radio Communications Receiver		258,401		49	*
Crystal Radio		148,099		53	*
Digital Volume Control		315,318		47	*
Electronic Stethoscope		294,079		141	*
FET Audio Mixer		324,369		41
FM Transmitter		970,619		419
Guitar Fuzz Effect		227,819		52	*
Microphone Mixer	Anatoly I. Shikhatov	234,247		26	*
Mono To Stereo Synthesizer	oRbEq	117,139		18	*
One Tube Regenerative Radio NEW!		119,894		4	*
Op Amp Radio		365,867		80	*
Single Chip AM Radio NEW!		88,883		2	*
Single Chip FM Radio NEW!		154,464		1	*
Sound Level Meter		324,715		51	*
Stereo Tube Amplifier	Weslee Kinsler	251,708		15	*
Tone Control		289,995		31
Transistor Organ		181,683		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		150,701		27	*
FM Telephone Bug		222,380		57
Phone Busy Indicator		200,935		24	*
Remote Telephone Ringer		105,646		3	*
Ringing Phone Light Flasher		199,062		35	*
Simple Phone Tap	Derek Tombrello	369,384		98	*
Telephone Hold Button		115,630		10
Telephone Recorder		201,950		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.