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, November 14, 2018	Stepper Motor Controller	11
	12VDC To 120VAC Inverter	10
Yesterday Tuesday, November 13, 2018	Dual Polarity Power Supply	117
	Stepper Motor Controller	84
Of All Time	12VDC To 120VAC Inverter	1,421,864
	FM Transmitter	940,641

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		193,222		61	*
Car Alarm Arming Horn Beep Canceller	bob	104,620		6	*
Wireless Auto Tachometer		300,050		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	134,598		29	*
Parallel (Printer) Port Interface		238,834		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		396,377		63	*
3 Channel Spectrum Analyzer		189,150		20
40W Fluorescent Lamp Inverter	Bart Milnes	292,892		60	*
Adjustable Strobe Light		267,305		36
Black Light		229,090		29
Colour (Sound) Organ		250,741		36
Electronic Dice NEW!		153,555		10	*
Fantastic Atom Expander		165,131		25
Flash Slave Trigger		184,913		18	*
Infa-Red Remote Control		586,707		216	*
IR Remote Extender NEW!		94,283		2	*
IR Remote Jammer	Carl	228,721		110	*
IR Remote Switch NEW!		124,432		9	*
LASER Transmitter/Receiver		367,352		92
LED Chaser		410,592		83	*
LED Metronome NEW!		82,413		3	*
LED Thermometer		179,108		22	*
Light/Dark Detector		277,227		90	*
Simple Colour Organ		113,584		10	*
Strobe Light		246,044		27	*
TRIAC Light Dimmer		458,392		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		315,208		122	*
Electromagnetic Levitator NEW!		115,782		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		863,596		214	*
AC Motor Speed Controller		343,697		29	*
Air Flow Detector		222,912		54	*
Digital Keypad Combination Lock		166,305		20
Low Voltage Alarm		196,679		58	*
Pine Racecar Victory Judge		77,889		1	*
Pulse Width Modulation DC Motor Control		613,101		93
Rain Detector		276,070		112	*
Simple Lie Detector		521,880		323
Simple Polarity Tester	Dudley LeRoux	131,181		13	*
Simple Servo Controller		186,477		22	*
Simple Touch Switch NEW!		142,232		5	*
Simple Two Speed Contactor DC Motor Controller		177,139		21	*
Stepper Motor Controller		692,290		120	*
Time Delay Relay		516,754		88
Time Delay Relay II	jawaharlal@excite.com	208,737		39	*
Touch Switch		259,600		51	*
Video Activated Relay		97,052		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	148,925		10	*
Water Detector With Sump/Bilge Pump Controller		122,642		18	*
Wire Loop Alarm	Alex Meaden	179,472		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		272,037		25	*
12VDC To 120VAC Inverter		1,421,864		688
6V to 12V Converter		454,707		121
Automatic 12V Lead Acid Battery Charger		877,569		246
Automatic Load Sensing Power Switch		135,623		16	*
Car Battery Charger		830,538		159	*
Dual Polarity Power Supply		335,259		84	*
Fixed Voltage Power Supply		279,727		52	*
High Current Power Supply		297,186		65	*
High Voltage High Current Power Supply		223,262		35	*
LASER Power Supply		255,119		28
Portable CD Player Adapter For Car		181,377		12	*
Power Supply		691,350		259	*
Solid State Tesla Coil NEW!		120,691		4
Solid State Tesla Coil/High Voltage Generator		391,728		50
Transformerless Power Supply		420,962		117	*
Voltage Inverter		305,937		51	*
Voltage Inverter II		174,432		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		548,585		182
3 Watt FM Transmitter	Rae XL Tkacik	297,950		82	*
50 Watt Amplifier		465,930		74
8 Note Tune Player		116,581		12	*
8 Watt Audio Amp		331,061		67	*
Aircraft Radio Communications Receiver		235,048		49	*
Crystal Radio		137,555		53	*
Digital Volume Control		298,395		47	*
Electronic Stethoscope		275,822		141	*
FET Audio Mixer		307,675		41
FM Transmitter		940,641		419
Guitar Fuzz Effect		207,787		52	*
Microphone Mixer	Anatoly I. Shikhatov	216,632		26	*
Mono To Stereo Synthesizer	oRbEq	100,040		18	*
One Tube Regenerative Radio NEW!		106,214		4	*
Op Amp Radio		346,765		80	*
Single Chip AM Radio NEW!		81,379		2	*
Single Chip FM Radio NEW!		135,355		1	*
Sound Level Meter		306,222		51	*
Stereo Tube Amplifier	Weslee Kinsler	233,921		15	*
Tone Control		270,382		31
Transistor Organ		164,839		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		138,471		27	*
FM Telephone Bug		204,118		57
Phone Busy Indicator		185,974		24	*
Remote Telephone Ringer		94,323		3	*
Ringing Phone Light Flasher		183,460		34	*
Simple Phone Tap	Derek Tombrello	332,061		98	*
Telephone Hold Button		99,001		10
Telephone Recorder		184,694		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.