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 Thursday, January 23, 2020	Infa-Red Remote Control	10
	Black Light	9
Yesterday Wednesday, January 22, 2020	Colour (Sound) Organ	72
	7 Segment LED Counter	72
Of All Time	12VDC To 120VAC Inverter	1,456,120
	FM Transmitter	962,132

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		203,919		61	*
Car Alarm Arming Horn Beep Canceller	bob	115,005		6	*
Wireless Auto Tachometer		316,205		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	142,536		29	*
Parallel (Printer) Port Interface		256,105		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		413,331		63	*
3 Channel Spectrum Analyzer		198,798		20
40W Fluorescent Lamp Inverter	Bart Milnes	305,681		60	*
Adjustable Strobe Light		280,523		36
Black Light		244,298		29
Colour (Sound) Organ		263,169		36
Electronic Dice NEW!		165,227		10	*
Fantastic Atom Expander		177,531		25
Flash Slave Trigger		195,621		18	*
Infa-Red Remote Control		603,122		216	*
IR Remote Extender NEW!		106,623		2	*
IR Remote Jammer	Carl	238,832		110	*
IR Remote Switch NEW!		135,702		9	*
LASER Transmitter/Receiver		381,506		92
LED Chaser		421,481		83	*
LED Metronome NEW!		87,344		3	*
LED Thermometer		187,896		22	*
Light/Dark Detector		285,963		90	*
Simple Colour Organ		120,742		10	*
Strobe Light		254,464		27	*
TRIAC Light Dimmer		475,493		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		329,504		122	*
Electromagnetic Levitator NEW!		124,931		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		886,422		214	*
AC Motor Speed Controller		360,088		29	*
Air Flow Detector		231,896		54	*
Digital Keypad Combination Lock		177,614		20
Low Voltage Alarm		206,261		58	*
Pine Racecar Victory Judge		86,725		1	*
Pulse Width Modulation DC Motor Control		624,384		94
Rain Detector		285,224		112	*
Simple Lie Detector		536,811		323
Simple Polarity Tester	Dudley LeRoux	142,115		13	*
Simple Servo Controller		200,448		22	*
Simple Touch Switch NEW!		150,480		5	*
Simple Two Speed Contactor DC Motor Controller		185,613		21	*
Stepper Motor Controller		712,006		120	*
Time Delay Relay		531,132		88
Time Delay Relay II	jawaharlal@excite.com	220,342		39	*
Touch Switch		268,703		51	*
Video Activated Relay		104,430		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	159,410		10	*
Water Detector With Sump/Bilge Pump Controller		130,472		18	*
Wire Loop Alarm	Alex Meaden	187,370		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		288,536		25	*
12VDC To 120VAC Inverter		1,456,120		689
6V to 12V Converter		483,104		121
Automatic 12V Lead Acid Battery Charger		899,731		247
Automatic Load Sensing Power Switch		145,101		16	*
Car Battery Charger		851,047		159	*
Dual Polarity Power Supply		351,767		84	*
Fixed Voltage Power Supply		288,897		52	*
High Current Power Supply		311,095		65	*
High Voltage High Current Power Supply		232,099		35	*
LASER Power Supply		271,406		28
Portable CD Player Adapter For Car		190,509		12	*
Power Supply		709,156		259	*
Solid State Tesla Coil NEW!		127,942		4
Solid State Tesla Coil/High Voltage Generator		410,462		50
Transformerless Power Supply		438,360		117	*
Voltage Inverter		313,907		51	*
Voltage Inverter II		181,900		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		560,218		182
3 Watt FM Transmitter	Rae XL Tkacik	308,789		82	*
50 Watt Amplifier		481,235		74
8 Note Tune Player		123,525		12	*
8 Watt Audio Amp		345,764		67	*
Aircraft Radio Communications Receiver		252,157		49	*
Crystal Radio		145,608		53	*
Digital Volume Control		310,051		47	*
Electronic Stethoscope		287,883		141	*
FET Audio Mixer		318,452		41
FM Transmitter		962,132		419
Guitar Fuzz Effect		222,137		52	*
Microphone Mixer	Anatoly I. Shikhatov	228,898		26	*
Mono To Stereo Synthesizer	oRbEq	111,878		18	*
One Tube Regenerative Radio NEW!		116,840		4	*
Op Amp Radio		358,665		80	*
Single Chip AM Radio NEW!		86,655		2	*
Single Chip FM Radio NEW!		149,022		1	*
Sound Level Meter		319,363		51	*
Stereo Tube Amplifier	Weslee Kinsler	246,612		15	*
Tone Control		284,071		31
Transistor Organ		176,252		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		145,826		27	*
FM Telephone Bug		217,601		57
Phone Busy Indicator		196,442		24	*
Remote Telephone Ringer		101,003		3	*
Ringing Phone Light Flasher		193,464		35	*
Simple Phone Tap	Derek Tombrello	345,476		98	*
Telephone Hold Button		110,820		10
Telephone Recorder		195,539		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.