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, June 19, 2013	Automatic 12V Lead Acid Battery Charger	198
	12VDC To 120VAC Inverter	158
Yesterday Tuesday, June 18, 2013	Automatic 12V Lead Acid Battery Charger	260
	12VDC To 120VAC Inverter	240
Of All Time	12VDC To 120VAC Inverter	1,115,744
	FM Transmitter	768,404

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		151,471		59	*
Car Alarm Arming Horn Beep Canceller	bob	75,921		6	*
Wireless Auto Tachometer		234,758		57

Computer

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computer Controlled Frequency Counter/Logic Probe	Richard van Wyk	99,101		29	*
Parallel (Printer) Port Interface		196,312		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		321,964		61	*
3 Channel Spectrum Analyzer		129,529		18
40W Fluorescent Lamp Inverter	Bart Milnes	234,578		60	*
Adjustable Strobe Light		205,031		36
Black Light		176,743		29
Colour (Sound) Organ		198,661		34
Electronic Dice NEW!		91,891		8	*
Fantastic Atom Expander		118,550		24
Flash Slave Trigger		145,215		17	*
Infa-Red Remote Control		464,725		216	*
IR Remote Extender NEW!		53,155		2	*
IR Remote Jammer	Carl	175,276		109	*
IR Remote Switch NEW!		78,466		9	*
LASER Transmitter/Receiver		286,900		88
LED Chaser		317,195		82	*
LED Metronome NEW!		51,798		3	*
LED Thermometer		137,895		21	*
Light/Dark Detector		214,843		89	*
Simple Colour Organ		83,283		10	*
Strobe Light		196,802		27	*
TRIAC Light Dimmer		344,869		54

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		262,536		122	*
Electromagnetic Levitator NEW!		72,446		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		666,205		212	*
AC Motor Speed Controller		232,441		28	*
Air Flow Detector		158,849		53	*
Digital Keypad Combination Lock		117,610		19
Low Voltage Alarm		142,862		57	*
Pine Racecar Victory Judge		52,335		1	*
Pulse Width Modulation DC Motor Control		497,215		91
Rain Detector		213,172		110	*
Simple Lie Detector		416,786		318
Simple Polarity Tester	Dudley LeRoux	88,446		13	*
Simple Servo Controller		127,642		22	*
Simple Touch Switch NEW!		85,812		5	*
Simple Two Speed Contactor DC Motor Controller		135,701		21	*
Stepper Motor Controller		553,899		120	*
Time Delay Relay		394,307		84
Time Delay Relay II	jawaharlal@excite.com	159,684		38	*
Touch Switch		208,302		51	*
Video Activated Relay		62,469		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	107,759		9	*
Water Detector With Sump/Bilge Pump Controller		88,261		18	*
Wire Loop Alarm	Alex Meaden	139,159		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		160,076		22	*
12VDC To 120VAC Inverter		1,115,744		682
6V to 12V Converter		341,560		120
Automatic 12V Lead Acid Battery Charger		613,027		231
Automatic Load Sensing Power Switch		95,119		14	*
Car Battery Charger		694,793		158	*
Dual Polarity Power Supply		234,450		84	*
Fixed Voltage Power Supply		216,934		51	*
High Current Power Supply		223,494		62	*
High Voltage High Current Power Supply		175,700		33	*
LASER Power Supply		192,462		28
Portable CD Player Adapter For Car		137,564		12	*
Power Supply		562,102		256	*
Solid State Tesla Coil NEW!		71,355		2
Solid State Tesla Coil/High Voltage Generator		285,103		49
Transformerless Power Supply		332,426		116	*
Voltage Inverter		240,832		51	*
Voltage Inverter II		134,188		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		414,180		182
3 Watt FM Transmitter	Rae XL Tkacik	228,385		77	*
50 Watt Amplifier		366,408		73
8 Note Tune Player		85,036		12	*
8 Watt Audio Amp		248,070		63	*
Aircraft Radio Communications Receiver		165,461		46	*
Crystal Radio		101,692		53	*
Digital Volume Control		242,777		46	*
Electronic Stethoscope		186,637		138	*
FET Audio Mixer		209,321		39
FM Transmitter		768,404		412
Guitar Fuzz Effect		150,159		51	*
Microphone Mixer	Anatoly I. Shikhatov	161,217		25	*
Mono To Stereo Synthesizer	oRbEq	63,481		16	*
One Tube Regenerative Radio NEW!		54,449		4	*
Op Amp Radio		256,340		79	*
Single Chip AM Radio NEW!		40,078		2	*
Single Chip FM Radio NEW!		69,389		0	*
Sound Level Meter		241,129		50	*
Stereo Tube Amplifier	Weslee Kinsler	159,617		15	*
Tone Control		207,427		29
Transistor Organ		120,180		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		105,058		27	*
FM Telephone Bug		162,005		57
Phone Busy Indicator		115,890		22	*
Remote Telephone Ringer		69,795		3	*
Ringing Phone Light Flasher		135,481		32	*
Simple Phone Tap	Derek Tombrello	275,370		98	*
Telephone Hold Button		65,969		9
Telephone Recorder		146,938		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.