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	12VDC To 120VAC Inverter	51
	Adjustable Strobe Light	18
Yesterday Wednesday, January 22, 2020	Colour (Sound) Organ	72
	7 Segment LED Counter	72
Of All Time	12VDC To 120VAC Inverter	1,456,167
	FM Transmitter	962,135

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		203,923		61	*
Car Alarm Arming Horn Beep Canceller	bob	115,009		6	*
Wireless Auto Tachometer		316,207		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		256,113		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		413,338		63	*
3 Channel Spectrum Analyzer		198,802		20
40W Fluorescent Lamp Inverter	Bart Milnes	305,686		60	*
Adjustable Strobe Light		280,534		36
Black Light		244,304		29
Colour (Sound) Organ		263,171		36
Electronic Dice NEW!		165,229		10	*
Fantastic Atom Expander		177,541		25
Flash Slave Trigger		195,626		18	*
Infa-Red Remote Control		603,127		216	*
IR Remote Extender NEW!		106,631		2	*
IR Remote Jammer	Carl	238,835		110	*
IR Remote Switch NEW!		135,705		9	*
LASER Transmitter/Receiver		381,512		92
LED Chaser		421,483		83	*
LED Metronome NEW!		87,344		3	*
LED Thermometer		187,903		22	*
Light/Dark Detector		285,967		90	*
Simple Colour Organ		120,742		10	*
Strobe Light		254,466		27	*
TRIAC Light Dimmer		475,495		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		329,512		122	*
Electromagnetic Levitator NEW!		124,936		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		886,428		214	*
AC Motor Speed Controller		360,089		29	*
Air Flow Detector		231,898		54	*
Digital Keypad Combination Lock		177,616		20
Low Voltage Alarm		206,266		58	*
Pine Racecar Victory Judge		86,731		1	*
Pulse Width Modulation DC Motor Control		624,392		94
Rain Detector		285,228		112	*
Simple Lie Detector		536,815		323
Simple Polarity Tester	Dudley LeRoux	142,121		13	*
Simple Servo Controller		200,451		22	*
Simple Touch Switch NEW!		150,488		5	*
Simple Two Speed Contactor DC Motor Controller		185,617		21	*
Stepper Motor Controller		712,010		120	*
Time Delay Relay		531,136		88
Time Delay Relay II	jawaharlal@excite.com	220,350		39	*
Touch Switch		268,709		51	*
Video Activated Relay		104,439		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	159,411		10	*
Water Detector With Sump/Bilge Pump Controller		130,478		18	*
Wire Loop Alarm	Alex Meaden	187,375		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		288,549		25	*
12VDC To 120VAC Inverter		1,456,167		689
6V to 12V Converter		483,110		121
Automatic 12V Lead Acid Battery Charger		899,736		247
Automatic Load Sensing Power Switch		145,104		16	*
Car Battery Charger		851,057		159	*
Dual Polarity Power Supply		351,770		84	*
Fixed Voltage Power Supply		288,905		52	*
High Current Power Supply		311,102		65	*
High Voltage High Current Power Supply		232,102		35	*
LASER Power Supply		271,412		28
Portable CD Player Adapter For Car		190,513		12	*
Power Supply		709,163		259	*
Solid State Tesla Coil NEW!		127,944		4
Solid State Tesla Coil/High Voltage Generator		410,466		50
Transformerless Power Supply		438,365		117	*
Voltage Inverter		313,912		51	*
Voltage Inverter II		181,906		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		560,224		182
3 Watt FM Transmitter	Rae XL Tkacik	308,790		82	*
50 Watt Amplifier		481,239		74
8 Note Tune Player		123,525		12	*
8 Watt Audio Amp		345,770		67	*
Aircraft Radio Communications Receiver		252,163		49	*
Crystal Radio		145,609		53	*
Digital Volume Control		310,054		47	*
Electronic Stethoscope		287,886		141	*
FET Audio Mixer		318,461		41
FM Transmitter		962,135		419
Guitar Fuzz Effect		222,142		52	*
Microphone Mixer	Anatoly I. Shikhatov	228,900		26	*
Mono To Stereo Synthesizer	oRbEq	111,883		18	*
One Tube Regenerative Radio NEW!		116,841		4	*
Op Amp Radio		358,670		80	*
Single Chip AM Radio NEW!		86,655		2	*
Single Chip FM Radio NEW!		149,027		1	*
Sound Level Meter		319,370		51	*
Stereo Tube Amplifier	Weslee Kinsler	246,614		15	*
Tone Control		284,072		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		145,833		27	*
FM Telephone Bug		217,604		57
Phone Busy Indicator		196,452		24	*
Remote Telephone Ringer		101,004		3	*
Ringing Phone Light Flasher		193,466		35	*
Simple Phone Tap	Derek Tombrello	345,479		98	*
Telephone Hold Button		110,822		10
Telephone Recorder		195,544		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.