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, September 25, 2018	Dual Polarity Power Supply	146
	Stepper Motor Controller	124
Yesterday Monday, September 24, 2018	Dual Polarity Power Supply	112
	Stepper Motor Controller	86
Of All Time	12VDC To 120VAC Inverter	1,418,623
	FM Transmitter	938,633

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		191,700		61	*
Car Alarm Arming Horn Beep Canceller	bob	103,360		6	*
Wireless Auto Tachometer		298,781		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	133,776		29	*
Parallel (Printer) Port Interface		237,417		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		394,677		63	*
3 Channel Spectrum Analyzer		187,935		20
40W Fluorescent Lamp Inverter	Bart Milnes	291,423		60	*
Adjustable Strobe Light		265,609		36
Black Light		227,545		29
Colour (Sound) Organ		249,320		36
Electronic Dice NEW!		152,225		10	*
Fantastic Atom Expander		163,435		25
Flash Slave Trigger		183,744		18	*
Infa-Red Remote Control		584,698		216	*
IR Remote Extender NEW!		93,253		2	*
IR Remote Jammer	Carl	227,456		110	*
IR Remote Switch NEW!		123,204		9	*
LASER Transmitter/Receiver		365,572		92
LED Chaser		408,936		83	*
LED Metronome NEW!		81,911		3	*
LED Thermometer		178,038		22	*
Light/Dark Detector		276,484		90	*
Simple Colour Organ		112,524		10	*
Strobe Light		244,624		27	*
TRIAC Light Dimmer		457,277		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		313,550		122	*
Electromagnetic Levitator NEW!		114,524		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		861,491		214	*
AC Motor Speed Controller		341,709		29	*
Air Flow Detector		221,654		54	*
Digital Keypad Combination Lock		164,997		20
Low Voltage Alarm		195,347		58	*
Pine Racecar Victory Judge		76,920		1	*
Pulse Width Modulation DC Motor Control		611,951		93
Rain Detector		274,515		112	*
Simple Lie Detector		520,283		323
Simple Polarity Tester	Dudley LeRoux	130,033		13	*
Simple Servo Controller		185,677		22	*
Simple Touch Switch NEW!		140,754		5	*
Simple Two Speed Contactor DC Motor Controller		176,441		21	*
Stepper Motor Controller		687,754		120	*
Time Delay Relay		515,117		88
Time Delay Relay II	jawaharlal@excite.com	207,348		39	*
Touch Switch		258,309		51	*
Video Activated Relay		95,854		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	147,327		10	*
Water Detector With Sump/Bilge Pump Controller		121,511		18	*
Wire Loop Alarm	Alex Meaden	178,613		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		270,629		25	*
12VDC To 120VAC Inverter		1,418,623		688
6V to 12V Converter		453,089		121
Automatic 12V Lead Acid Battery Charger		875,619		246
Automatic Load Sensing Power Switch		134,718		16	*
Car Battery Charger		828,344		159	*
Dual Polarity Power Supply		329,308		84	*
Fixed Voltage Power Supply		278,642		52	*
High Current Power Supply		296,248		65	*
High Voltage High Current Power Supply		222,209		35	*
LASER Power Supply		254,012		28
Portable CD Player Adapter For Car		180,466		12	*
Power Supply		689,745		259	*
Solid State Tesla Coil NEW!		119,061		4
Solid State Tesla Coil/High Voltage Generator		389,915		50
Transformerless Power Supply		419,766		117	*
Voltage Inverter		305,130		51	*
Voltage Inverter II		173,589		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		547,269		182
3 Watt FM Transmitter	Rae XL Tkacik	296,874		82	*
50 Watt Amplifier		464,188		74
8 Note Tune Player		115,853		12	*
8 Watt Audio Amp		329,693		67	*
Aircraft Radio Communications Receiver		233,842		49	*
Crystal Radio		136,944		53	*
Digital Volume Control		297,347		47	*
Electronic Stethoscope		274,542		141	*
FET Audio Mixer		306,265		41
FM Transmitter		938,633		419
Guitar Fuzz Effect		206,584		52	*
Microphone Mixer	Anatoly I. Shikhatov	215,613		26	*
Mono To Stereo Synthesizer	oRbEq	99,052		18	*
One Tube Regenerative Radio NEW!		105,354		4	*
Op Amp Radio		345,439		80	*
Single Chip AM Radio NEW!		80,764		2	*
Single Chip FM Radio NEW!		134,238		1	*
Sound Level Meter		305,120		51	*
Stereo Tube Amplifier	Weslee Kinsler	233,016		15	*
Tone Control		269,167		31
Transistor Organ		163,825		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		137,704		27	*
FM Telephone Bug		202,837		57
Phone Busy Indicator		184,956		24	*
Remote Telephone Ringer		93,576		3	*
Ringing Phone Light Flasher		182,656		34	*
Simple Phone Tap	Derek Tombrello	331,356		98	*
Telephone Hold Button		98,101		10
Telephone Recorder		183,637		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.