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, August 04, 2020	Remote Telephone Ringer	15
	Flash Slave Trigger	14
Yesterday Monday, August 03, 2020	12VDC To 120VAC Inverter	126
	12VDC Fluorescent Lamp Driver	39
Of All Time	12VDC To 120VAC Inverter	1,468,858
	FM Transmitter	970,601

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		210,715		61	*
Car Alarm Arming Horn Beep Canceller	bob	121,843		6	*
Wireless Auto Tachometer		323,999		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	147,073		29	*
Parallel (Printer) Port Interface		264,216		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		424,112		63	*
3 Channel Spectrum Analyzer		204,071		20
40W Fluorescent Lamp Inverter	Bart Milnes	312,865		60	*
Adjustable Strobe Light		288,441		36
Black Light		253,359		29
Colour (Sound) Organ		270,640		36
Electronic Dice NEW!		172,266		10	*
Fantastic Atom Expander		185,294		25
Flash Slave Trigger		202,827		18	*
Infa-Red Remote Control		612,563		216	*
IR Remote Extender NEW!		114,400		2	*
IR Remote Jammer	Carl	245,105		110	*
IR Remote Switch NEW!		142,707		9	*
LASER Transmitter/Receiver		389,892		92
LED Chaser		426,948		83	*
LED Metronome NEW!		89,284		3	*
LED Thermometer		193,060		22	*
Light/Dark Detector		291,214		90	*
Simple Colour Organ		125,164		10	*
Strobe Light		259,555		27	*
TRIAC Light Dimmer		481,876		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		339,909		122	*
Electromagnetic Levitator NEW!		129,845		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		896,067		214	*
AC Motor Speed Controller		366,458		29	*
Air Flow Detector		236,977		54	*
Digital Keypad Combination Lock		182,470		20
Low Voltage Alarm		212,016		58	*
Pine Racecar Victory Judge		90,967		1	*
Pulse Width Modulation DC Motor Control		630,148		94
Rain Detector		290,134		112	*
Simple Lie Detector		542,762		323
Simple Polarity Tester	Dudley LeRoux	149,463		13	*
Simple Servo Controller		205,477		22	*
Simple Touch Switch NEW!		155,134		5	*
Simple Two Speed Contactor DC Motor Controller		190,486		21	*
Stepper Motor Controller		719,412		120	*
Time Delay Relay		538,557		88
Time Delay Relay II	jawaharlal@excite.com	227,778		39	*
Touch Switch		274,059		51	*
Video Activated Relay		108,972		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	164,761		10	*
Water Detector With Sump/Bilge Pump Controller		136,057		18	*
Wire Loop Alarm	Alex Meaden	191,962		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		294,599		25	*
12VDC To 120VAC Inverter		1,468,858		689
6V to 12V Converter		500,030		121
Automatic 12V Lead Acid Battery Charger		908,539		247
Automatic Load Sensing Power Switch		150,492		16	*
Car Battery Charger		859,217		159	*
Dual Polarity Power Supply		355,047		84	*
Fixed Voltage Power Supply		294,034		52	*
High Current Power Supply		318,162		65	*
High Voltage High Current Power Supply		237,349		35	*
LASER Power Supply		277,235		28
Portable CD Player Adapter For Car		195,870		12	*
Power Supply		716,414		259	*
Solid State Tesla Coil NEW!		131,137		4
Solid State Tesla Coil/High Voltage Generator		418,047		50
Transformerless Power Supply		444,346		117	*
Voltage Inverter		317,673		51	*
Voltage Inverter II		186,587		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		566,523		182
3 Watt FM Transmitter	Rae XL Tkacik	314,988		82	*
50 Watt Amplifier		487,873		74
8 Note Tune Player		128,114		12	*
8 Watt Audio Amp		351,963		67	*
Aircraft Radio Communications Receiver		258,383		49	*
Crystal Radio		148,092		53	*
Digital Volume Control		315,304		47	*
Electronic Stethoscope		294,062		141	*
FET Audio Mixer		324,351		41
FM Transmitter		970,601		419
Guitar Fuzz Effect		227,808		52	*
Microphone Mixer	Anatoly I. Shikhatov	234,233		26	*
Mono To Stereo Synthesizer	oRbEq	117,125		18	*
One Tube Regenerative Radio NEW!		119,881		4	*
Op Amp Radio		365,852		80	*
Single Chip AM Radio NEW!		88,872		2	*
Single Chip FM Radio NEW!		154,445		1	*
Sound Level Meter		324,697		51	*
Stereo Tube Amplifier	Weslee Kinsler	251,694		15	*
Tone Control		289,972		31
Transistor Organ		181,665		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		150,688		27	*
FM Telephone Bug		222,368		57
Phone Busy Indicator		200,915		24	*
Remote Telephone Ringer		105,633		3	*
Ringing Phone Light Flasher		199,040		35	*
Simple Phone Tap	Derek Tombrello	369,372		98	*
Telephone Hold Button		115,616		10
Telephone Recorder		201,928		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.