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 Friday, May 18, 2012	12VDC To 120VAC Inverter	390
	Automatic 12V Lead Acid Battery Charger	305
Yesterday Thursday, May 17, 2012	12VDC To 120VAC Inverter	414
	Automatic 12V Lead Acid Battery Charger	306
Of All Time	12VDC To 120VAC Inverter	990,945
	FM Transmitter	687,296

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		136,433		56	*
Car Alarm Arming Horn Beep Canceller	bob	67,126		6	*
Wireless Auto Tachometer		214,254		56

Computer

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computer Controlled Frequency Counter/Logic Probe	Richard van Wyk	89,587		29	*
Parallel (Printer) Port Interface		180,594		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		290,736		61	*
3 Channel Spectrum Analyzer		110,845		16
40W Fluorescent Lamp Inverter	Bart Milnes	210,811		58	*
Adjustable Strobe Light		178,351		35
Black Light		159,753		29
Colour (Sound) Organ		181,181		34
Electronic Dice NEW!		68,354		7	*
Fantastic Atom Expander		106,168		22
Flash Slave Trigger		132,832		17	*
Infa-Red Remote Control		415,773		215	*
IR Remote Extender NEW!		38,572		2	*
IR Remote Jammer	Carl	156,099		107	*
IR Remote Switch NEW!		56,809		7	*
LASER Transmitter/Receiver		254,656		87
LED Chaser		283,090		82	*
LED Metronome NEW!		39,569		3	*
LED Thermometer		123,328		20	*
Light/Dark Detector		192,038		88	*
Simple Colour Organ		75,152		10	*
Strobe Light		181,269		26	*
TRIAC Light Dimmer		301,038		53

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		240,807		122	*
Electromagnetic Levitator NEW!		55,757		12	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		600,619		212	*
AC Motor Speed Controller		186,052		25	*
Air Flow Detector		139,792		53	*
Digital Keypad Combination Lock		101,342		19
Low Voltage Alarm		124,522		56	*
Pine Racecar Victory Judge		46,291		1	*
Pulse Width Modulation DC Motor Control		447,139		91
Rain Detector		193,038		110	*
Simple Lie Detector		369,982		311
Simple Polarity Tester	Dudley LeRoux	77,013		13	*
Simple Servo Controller		98,126		21	*
Simple Touch Switch NEW!		62,101		5	*
Simple Two Speed Contactor DC Motor Controller		123,843		21	*
Stepper Motor Controller		501,240		116	*
Time Delay Relay		345,143		80
Time Delay Relay II	jawaharlal@excite.com	143,571		38	*
Touch Switch		191,660		49	*
Video Activated Relay		55,359		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	94,567		9	*
Water Detector With Sump/Bilge Pump Controller		77,190		18	*
Wire Loop Alarm	Alex Meaden	124,902		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		107,932		22	*
12VDC To 120VAC Inverter		990,945		677
6V to 12V Converter		303,893		115
Automatic 12V Lead Acid Battery Charger		505,141		220
Automatic Load Sensing Power Switch		83,547		14	*
Car Battery Charger		636,731		158	*
Dual Polarity Power Supply		209,508		83	*
Fixed Voltage Power Supply		193,625		50	*
High Current Power Supply		200,409		61	*
High Voltage High Current Power Supply		159,041		32	*
LASER Power Supply		172,454		28
Portable CD Player Adapter For Car		125,772		12	*
Power Supply		516,275		256	*
Solid State Tesla Coil NEW!		50,492		2
Solid State Tesla Coil/High Voltage Generator		251,246		48
Transformerless Power Supply		298,054		116	*
Voltage Inverter		215,590		51	*
Voltage Inverter II		121,305		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		348,269		179
3 Watt FM Transmitter	Rae XL Tkacik	201,895		75	*
50 Watt Amplifier		333,411		72
8 Note Tune Player		76,853		12	*
8 Watt Audio Amp		220,781		62	*
Aircraft Radio Communications Receiver		143,979		46	*
Crystal Radio		90,754		52	*
Digital Volume Control		217,529		46	*
Electronic Stethoscope		163,059		136	*
FET Audio Mixer		183,737		38
FM Transmitter		687,296		399
Guitar Fuzz Effect		132,172		48	*
Microphone Mixer	Anatoly I. Shikhatov	143,026		23	*
Mono To Stereo Synthesizer	oRbEq	56,052		16	*
One Tube Regenerative Radio NEW!		37,603		3	*
Op Amp Radio		229,649		77	*
Single Chip AM Radio NEW!		29,765		2	*
Single Chip FM Radio NEW!		49,448		0	*
Sound Level Meter		213,476		46	*
Stereo Tube Amplifier	Weslee Kinsler	144,147		15	*
Tone Control		184,558		29
Transistor Organ		106,993		27

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		94,971		26	*
FM Telephone Bug		145,986		56
Phone Busy Indicator		99,096		22	*
Remote Telephone Ringer		62,350		3	*
Ringing Phone Light Flasher		118,268		27	*
Simple Phone Tap	Derek Tombrello	252,474		98	*
Telephone Hold Button		57,231		9
Telephone Recorder		133,637		53	*

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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.