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 Sunday, October 17, 2021	12VDC To 120VAC Inverter	38
	Op Amp Radio	29
Yesterday Saturday, October 16, 2021	12VDC To 120VAC Inverter	54
	Voltage Inverter	27
Of All Time	12VDC To 120VAC Inverter	1,492,527
	FM Transmitter	983,045

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		218,592		61	*
Car Alarm Arming Horn Beep Canceller	bob	129,199		6	*
Wireless Auto Tachometer		332,971		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	152,889		29	*
Parallel (Printer) Port Interface		274,199		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		435,856		63	*
3 Channel Spectrum Analyzer		211,608		20
40W Fluorescent Lamp Inverter	Bart Milnes	321,052		60	*
Adjustable Strobe Light		297,972		36
Black Light		264,959		29
Colour (Sound) Organ		279,952		36
Electronic Dice NEW!		180,266		10	*
Fantastic Atom Expander		194,127		25
Flash Slave Trigger		211,285		18	*
Infa-Red Remote Control		622,769		216	*
IR Remote Extender NEW!		123,129		2	*
IR Remote Jammer	Carl	253,899		110	*
IR Remote Switch NEW!		150,120		9	*
LASER Transmitter/Receiver		401,102		92
LED Chaser		434,381		83	*
LED Metronome NEW!		93,122		3	*
LED Thermometer		199,160		22	*
Light/Dark Detector		298,099		90	*
Simple Colour Organ		130,668		10	*
Strobe Light		266,191		27	*
TRIAC Light Dimmer		540,147		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		349,734		122	*
Electromagnetic Levitator NEW!		136,374		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		908,878		214	*
AC Motor Speed Controller		375,941		29	*
Air Flow Detector		243,541		54	*
Digital Keypad Combination Lock		188,829		20
Low Voltage Alarm		219,272		58	*
Pine Racecar Victory Judge		96,370		1	*
Pulse Width Modulation DC Motor Control		637,987		94
Rain Detector		296,279		112	*
Simple Lie Detector		550,638		323
Simple Polarity Tester	Dudley LeRoux	157,120		13	*
Simple Servo Controller		212,411		22	*
Simple Touch Switch NEW!		161,429		5	*
Simple Two Speed Contactor DC Motor Controller		196,783		21	*
Stepper Motor Controller		730,224		120	*
Time Delay Relay		545,994		88
Time Delay Relay II	jawaharlal@excite.com	235,995		39	*
Touch Switch		280,843		51	*
Video Activated Relay		114,499		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	171,509		10	*
Water Detector With Sump/Bilge Pump Controller		144,849		18	*
Wire Loop Alarm	Alex Meaden	198,002		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		302,799		25	*
12VDC To 120VAC Inverter		1,492,527		689
6V to 12V Converter		513,058		121
Automatic 12V Lead Acid Battery Charger		920,258		248
Automatic Load Sensing Power Switch		158,216		16	*
Car Battery Charger		869,178		159	*
Dual Polarity Power Supply		360,953		84	*
Fixed Voltage Power Supply		301,143		52	*
High Current Power Supply		326,195		66	*
High Voltage High Current Power Supply		243,915		35	*
LASER Power Supply		285,156		28
Portable CD Player Adapter For Car		203,232		12	*
Power Supply		725,629		259	*
Solid State Tesla Coil NEW!		136,535		4
Solid State Tesla Coil/High Voltage Generator		429,776		50
Transformerless Power Supply		452,571		117	*
Voltage Inverter		325,903		51	*
Voltage Inverter II		192,769		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		574,790		182
3 Watt FM Transmitter	Rae XL Tkacik	323,055		83	*
50 Watt Amplifier		496,191		74
8 Note Tune Player		133,685		12	*
8 Watt Audio Amp		360,786		67	*
Aircraft Radio Communications Receiver		266,174		49	*
Crystal Radio		151,968		53	*
Digital Volume Control		322,896		47	*
Electronic Stethoscope		303,449		142	*
FET Audio Mixer		332,781		41
FM Transmitter		983,045		420
Guitar Fuzz Effect		235,940		54	*
Microphone Mixer	Anatoly I. Shikhatov	241,290		26	*
Mono To Stereo Synthesizer	oRbEq	124,357		18	*
One Tube Regenerative Radio NEW!		126,337		4	*
Op Amp Radio		374,764		80	*
Single Chip AM Radio NEW!		92,736		2	*
Single Chip FM Radio NEW!		162,046		1	*
Sound Level Meter		331,633		51	*
Stereo Tube Amplifier	Weslee Kinsler	258,728		15	*
Tone Control		298,686		31
Transistor Organ		189,504		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		156,440		27	*
FM Telephone Bug		228,528		57
Phone Busy Indicator		206,508		24	*
Remote Telephone Ringer		111,649		3	*
Ringing Phone Light Flasher		206,559		35	*
Simple Phone Tap	Derek Tombrello	375,864		98	*
Telephone Hold Button		121,548		10
Telephone Recorder		208,870		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.