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 Saturday, August 08, 2020	12VDC Fluorescent Lamp Driver	28
	Black Light	28
Yesterday Friday, August 07, 2020	12VDC To 120VAC Inverter	48
	Power Supply	30
Of All Time	12VDC To 120VAC Inverter	1,469,042
	FM Transmitter	970,703

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		210,808		61	*
Car Alarm Arming Horn Beep Canceller	bob	121,919		6	*
Wireless Auto Tachometer		324,115		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	147,141		29	*
Parallel (Printer) Port Interface		264,331		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		424,251		63	*
3 Channel Spectrum Analyzer		204,152		20
40W Fluorescent Lamp Inverter	Bart Milnes	312,962		60	*
Adjustable Strobe Light		288,545		36
Black Light		253,520		29
Colour (Sound) Organ		270,749		36
Electronic Dice NEW!		172,381		10	*
Fantastic Atom Expander		185,387		25
Flash Slave Trigger		202,930		18	*
Infa-Red Remote Control		612,653		216	*
IR Remote Extender NEW!		114,508		2	*
IR Remote Jammer	Carl	245,175		110	*
IR Remote Switch NEW!		142,800		9	*
LASER Transmitter/Receiver		390,018		92
LED Chaser		427,032		83	*
LED Metronome NEW!		89,335		3	*
LED Thermometer		193,130		22	*
Light/Dark Detector		291,317		90	*
Simple Colour Organ		125,232		10	*
Strobe Light		259,629		27	*
TRIAC Light Dimmer		532,361		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		340,032		122	*
Electromagnetic Levitator NEW!		129,935		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		896,191		214	*
AC Motor Speed Controller		366,555		29	*
Air Flow Detector		237,061		54	*
Digital Keypad Combination Lock		182,543		20
Low Voltage Alarm		212,087		58	*
Pine Racecar Victory Judge		91,039		1	*
Pulse Width Modulation DC Motor Control		630,233		94
Rain Detector		290,203		112	*
Simple Lie Detector		542,837		323
Simple Polarity Tester	Dudley LeRoux	149,553		13	*
Simple Servo Controller		205,552		22	*
Simple Touch Switch NEW!		155,203		5	*
Simple Two Speed Contactor DC Motor Controller		190,565		21	*
Stepper Motor Controller		719,523		120	*
Time Delay Relay		538,645		88
Time Delay Relay II	jawaharlal@excite.com	227,868		39	*
Touch Switch		274,146		51	*
Video Activated Relay		109,036		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	164,842		10	*
Water Detector With Sump/Bilge Pump Controller		136,188		18	*
Wire Loop Alarm	Alex Meaden	192,027		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		294,693		25	*
12VDC To 120VAC Inverter		1,469,042		689
6V to 12V Converter		500,289		121
Automatic 12V Lead Acid Battery Charger		908,651		247
Automatic Load Sensing Power Switch		150,599		16	*
Car Battery Charger		859,344		159	*
Dual Polarity Power Supply		355,109		84	*
Fixed Voltage Power Supply		294,120		52	*
High Current Power Supply		318,247		65	*
High Voltage High Current Power Supply		237,438		35	*
LASER Power Supply		277,307		28
Portable CD Player Adapter For Car		195,960		12	*
Power Supply		716,529		259	*
Solid State Tesla Coil NEW!		131,214		4
Solid State Tesla Coil/High Voltage Generator		418,182		50
Transformerless Power Supply		444,434		117	*
Voltage Inverter		317,750		51	*
Voltage Inverter II		186,655		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		566,630		182
3 Watt FM Transmitter	Rae XL Tkacik	315,070		82	*
50 Watt Amplifier		487,971		74
8 Note Tune Player		128,184		12	*
8 Watt Audio Amp		352,111		67	*
Aircraft Radio Communications Receiver		258,499		49	*
Crystal Radio		148,134		53	*
Digital Volume Control		315,379		47	*
Electronic Stethoscope		294,157		141	*
FET Audio Mixer		324,425		41
FM Transmitter		970,703		419
Guitar Fuzz Effect		227,876		52	*
Microphone Mixer	Anatoly I. Shikhatov	234,305		26	*
Mono To Stereo Synthesizer	oRbEq	117,200		18	*
One Tube Regenerative Radio NEW!		119,950		4	*
Op Amp Radio		365,941		80	*
Single Chip AM Radio NEW!		88,926		2	*
Single Chip FM Radio NEW!		154,529		1	*
Sound Level Meter		324,782		51	*
Stereo Tube Amplifier	Weslee Kinsler	251,777		15	*
Tone Control		290,077		31
Transistor Organ		181,737		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		150,749		27	*
FM Telephone Bug		222,424		57
Phone Busy Indicator		200,990		24	*
Remote Telephone Ringer		105,706		3	*
Ringing Phone Light Flasher		199,122		35	*
Simple Phone Tap	Derek Tombrello	369,445		98	*
Telephone Hold Button		115,684		10
Telephone Recorder		202,031		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.