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 Wednesday, May 23, 2018	Car Battery Charger	141
	12VDC To 120VAC Inverter	68
Yesterday Tuesday, May 22, 2018	7 Segment LED Counter	76
	Car Battery Charger	57
Of All Time	12VDC To 120VAC Inverter	1,411,011
	FM Transmitter	933,963

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		189,297		61	*
Car Alarm Arming Horn Beep Canceller	bob	101,203		6	*
Wireless Auto Tachometer		296,967		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	132,576		29	*
Parallel (Printer) Port Interface		235,736		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		392,431		63	*
3 Channel Spectrum Analyzer		184,989		20
40W Fluorescent Lamp Inverter	Bart Milnes	289,736		60	*
Adjustable Strobe Light		262,747		36
Black Light		224,512		29
Colour (Sound) Organ		246,859		36
Electronic Dice NEW!		150,469		10	*
Fantastic Atom Expander		160,923		25
Flash Slave Trigger		181,365		18	*
Infa-Red Remote Control		580,506		216	*
IR Remote Extender NEW!		91,154		2	*
IR Remote Jammer	Carl	224,468		110	*
IR Remote Switch NEW!		121,554		9	*
LASER Transmitter/Receiver		362,591		92
LED Chaser		405,933		83	*
LED Metronome NEW!		80,445		3	*
LED Thermometer		175,624		22	*
Light/Dark Detector		274,850		90	*
Simple Colour Organ		110,587		10	*
Strobe Light		242,415		27	*
TRIAC Light Dimmer		455,132		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		311,525		122	*
Electromagnetic Levitator NEW!		112,000		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		857,033		214	*
AC Motor Speed Controller		337,900		29	*
Air Flow Detector		219,106		54	*
Digital Keypad Combination Lock		162,708		20
Low Voltage Alarm		192,388		58	*
Pine Racecar Victory Judge		75,060		1	*
Pulse Width Modulation DC Motor Control		609,353		93
Rain Detector		271,343		112	*
Simple Lie Detector		516,507		323
Simple Polarity Tester	Dudley LeRoux	127,672		13	*
Simple Servo Controller		184,140		22	*
Simple Touch Switch NEW!		138,284		5	*
Simple Two Speed Contactor DC Motor Controller		175,145		21	*
Stepper Motor Controller		678,892		120	*
Time Delay Relay		511,336		88
Time Delay Relay II	jawaharlal@excite.com	203,887		39	*
Touch Switch		255,625		51	*
Video Activated Relay		93,381		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	145,605		10	*
Water Detector With Sump/Bilge Pump Controller		119,266		18	*
Wire Loop Alarm	Alex Meaden	177,019		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		267,326		25	*
12VDC To 120VAC Inverter		1,411,011		688
6V to 12V Converter		449,021		121
Automatic 12V Lead Acid Battery Charger		871,640		246
Automatic Load Sensing Power Switch		132,768		16	*
Car Battery Charger		822,976		159	*
Dual Polarity Power Supply		316,956		84	*
Fixed Voltage Power Supply		276,899		52	*
High Current Power Supply		294,247		65	*
High Voltage High Current Power Supply		220,552		35	*
LASER Power Supply		251,803		28
Portable CD Player Adapter For Car		178,566		12	*
Power Supply		685,684		259	*
Solid State Tesla Coil NEW!		116,968		4
Solid State Tesla Coil/High Voltage Generator		386,086		50
Transformerless Power Supply		417,787		117	*
Voltage Inverter		303,011		51	*
Voltage Inverter II		172,232		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		544,375		182
3 Watt FM Transmitter	Rae XL Tkacik	294,743		82	*
50 Watt Amplifier		460,609		74
8 Note Tune Player		114,654		12	*
8 Watt Audio Amp		327,179		67	*
Aircraft Radio Communications Receiver		231,268		49	*
Crystal Radio		135,362		53	*
Digital Volume Control		295,391		47	*
Electronic Stethoscope		272,363		141	*
FET Audio Mixer		303,043		41
FM Transmitter		933,963		419
Guitar Fuzz Effect		204,319		52	*
Microphone Mixer	Anatoly I. Shikhatov	213,607		26	*
Mono To Stereo Synthesizer	oRbEq	97,466		18	*
One Tube Regenerative Radio NEW!		103,329		4	*
Op Amp Radio		342,924		80	*
Single Chip AM Radio NEW!		79,332		2	*
Single Chip FM Radio NEW!		132,031		1	*
Sound Level Meter		303,142		51	*
Stereo Tube Amplifier	Weslee Kinsler	231,423		15	*
Tone Control		267,119		31
Transistor Organ		162,106		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		136,261		27	*
FM Telephone Bug		201,392		57
Phone Busy Indicator		183,361		24	*
Remote Telephone Ringer		92,531		3	*
Ringing Phone Light Flasher		180,650		34	*
Simple Phone Tap	Derek Tombrello	328,630		98	*
Telephone Hold Button		96,821		10
Telephone Recorder		181,738		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.