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, January 28, 2020	12VDC Fluorescent Lamp Driver	42
	LASER Transmitter/Receiver	31
Yesterday Monday, January 27, 2020	12VDC To 120VAC Inverter	47
	Power Supply	46
Of All Time	12VDC To 120VAC Inverter	1,456,483
	FM Transmitter	962,337

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		204,130		61	*
Car Alarm Arming Horn Beep Canceller	bob	115,212		6	*
Wireless Auto Tachometer		316,447		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	142,661		29	*
Parallel (Printer) Port Interface		256,381		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		413,659		63	*
3 Channel Spectrum Analyzer		198,958		20
40W Fluorescent Lamp Inverter	Bart Milnes	305,920		60	*
Adjustable Strobe Light		280,765		36
Black Light		244,581		29
Colour (Sound) Organ		263,403		36
Electronic Dice NEW!		165,445		10	*
Fantastic Atom Expander		177,758		25
Flash Slave Trigger		195,851		18	*
Infa-Red Remote Control		603,370		216	*
IR Remote Extender NEW!		106,884		2	*
IR Remote Jammer	Carl	239,002		110	*
IR Remote Switch NEW!		135,930		9	*
LASER Transmitter/Receiver		381,786		92
LED Chaser		421,631		83	*
LED Metronome NEW!		87,390		3	*
LED Thermometer		188,052		22	*
Light/Dark Detector		286,118		90	*
Simple Colour Organ		120,869		10	*
Strobe Light		254,609		27	*
TRIAC Light Dimmer		475,645		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		329,736		122	*
Electromagnetic Levitator NEW!		125,054		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		886,687		214	*
AC Motor Speed Controller		360,271		29	*
Air Flow Detector		232,033		54	*
Digital Keypad Combination Lock		177,739		20
Low Voltage Alarm		206,855		58	*
Pine Racecar Victory Judge		86,844		1	*
Pulse Width Modulation DC Motor Control		624,548		94
Rain Detector		285,356		112	*
Simple Lie Detector		537,008		323
Simple Polarity Tester	Dudley LeRoux	142,348		13	*
Simple Servo Controller		200,588		22	*
Simple Touch Switch NEW!		150,607		5	*
Simple Two Speed Contactor DC Motor Controller		185,764		21	*
Stepper Motor Controller		712,222		120	*
Time Delay Relay		531,758		88
Time Delay Relay II	jawaharlal@excite.com	220,573		39	*
Touch Switch		268,873		51	*
Video Activated Relay		104,564		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	159,562		10	*
Water Detector With Sump/Bilge Pump Controller		130,626		18	*
Wire Loop Alarm	Alex Meaden	187,503		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		288,746		25	*
12VDC To 120VAC Inverter		1,456,483		689
6V to 12V Converter		483,313		121
Automatic 12V Lead Acid Battery Charger		899,997		247
Automatic Load Sensing Power Switch		145,253		16	*
Car Battery Charger		851,280		159	*
Dual Polarity Power Supply		351,866		84	*
Fixed Voltage Power Supply		289,055		52	*
High Current Power Supply		311,274		65	*
High Voltage High Current Power Supply		232,251		35	*
LASER Power Supply		271,598		28
Portable CD Player Adapter For Car		190,670		12	*
Power Supply		709,358		259	*
Solid State Tesla Coil NEW!		128,024		4
Solid State Tesla Coil/High Voltage Generator		410,659		50
Transformerless Power Supply		438,536		117	*
Voltage Inverter		314,005		51	*
Voltage Inverter II		182,037		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		560,393		182
3 Watt FM Transmitter	Rae XL Tkacik	308,948		82	*
50 Watt Amplifier		481,425		74
8 Note Tune Player		123,640		12	*
8 Watt Audio Amp		345,951		67	*
Aircraft Radio Communications Receiver		252,352		49	*
Crystal Radio		145,666		53	*
Digital Volume Control		310,165		47	*
Electronic Stethoscope		288,077		141	*
FET Audio Mixer		318,638		41
FM Transmitter		962,337		419
Guitar Fuzz Effect		222,294		52	*
Microphone Mixer	Anatoly I. Shikhatov	229,051		26	*
Mono To Stereo Synthesizer	oRbEq	112,008		18	*
One Tube Regenerative Radio NEW!		116,916		4	*
Op Amp Radio		358,837		80	*
Single Chip AM Radio NEW!		86,722		2	*
Single Chip FM Radio NEW!		149,181		1	*
Sound Level Meter		319,513		51	*
Stereo Tube Amplifier	Weslee Kinsler	246,757		15	*
Tone Control		284,248		31
Transistor Organ		176,379		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		145,963		27	*
FM Telephone Bug		217,734		57
Phone Busy Indicator		196,573		24	*
Remote Telephone Ringer		101,143		3	*
Ringing Phone Light Flasher		193,626		35	*
Simple Phone Tap	Derek Tombrello	345,605		98	*
Telephone Hold Button		110,957		10
Telephone Recorder		195,760		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.