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 Tuesday, September 26, 2017	12VDC To 120VAC Inverter	45
	AC Motor Speed Controller	37
Yesterday Monday, September 25, 2017	12VDC To 120VAC Inverter	107
	Dual Polarity Power Supply	101
Of All Time	12VDC To 120VAC Inverter	1,390,175
	FM Transmitter	922,560

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		185,487		61	*
Car Alarm Arming Horn Beep Canceller	bob	97,918		6	*
Wireless Auto Tachometer		292,638		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	129,317		29	*
Parallel (Printer) Port Interface		231,638		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		386,742		62	*
3 Channel Spectrum Analyzer		179,473		20
40W Fluorescent Lamp Inverter	Bart Milnes	285,226		60	*
Adjustable Strobe Light		257,626		36
Black Light		219,748		29
Colour (Sound) Organ		241,926		36
Electronic Dice NEW!		146,849		9	*
Fantastic Atom Expander		156,288		25
Flash Slave Trigger		177,640		17	*
Infa-Red Remote Control		574,181		216	*
IR Remote Extender NEW!		86,827		2	*
IR Remote Jammer	Carl	219,774		110	*
IR Remote Switch NEW!		116,757		9	*
LASER Transmitter/Receiver		357,350		92
LED Chaser		400,083		83	*
LED Metronome NEW!		77,160		3	*
LED Thermometer		171,332		22	*
Light/Dark Detector		269,940		89	*
Simple Colour Organ		107,464		10	*
Strobe Light		238,743		27	*
TRIAC Light Dimmer		448,721		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		306,929		122	*
Electromagnetic Levitator NEW!		107,678		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		847,437		214	*
AC Motor Speed Controller		330,784		29	*
Air Flow Detector		214,800		54	*
Digital Keypad Combination Lock		158,573		20
Low Voltage Alarm		187,731		58	*
Pine Racecar Victory Judge		72,070		1	*
Pulse Width Modulation DC Motor Control		602,761		93
Rain Detector		267,442		112	*
Simple Lie Detector		510,032		323
Simple Polarity Tester	Dudley LeRoux	123,470		13	*
Simple Servo Controller		179,523		22	*
Simple Touch Switch NEW!		134,383		5	*
Simple Two Speed Contactor DC Motor Controller		171,408		21	*
Stepper Motor Controller		665,577		120	*
Time Delay Relay		503,560		88
Time Delay Relay II	jawaharlal@excite.com	199,540		39	*
Touch Switch		251,236		51	*
Video Activated Relay		89,903		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	141,264		10	*
Water Detector With Sump/Bilge Pump Controller		115,001		18	*
Wire Loop Alarm	Alex Meaden	173,348		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		260,513		25	*
12VDC To 120VAC Inverter		1,390,175		687
6V to 12V Converter		438,957		121
Automatic 12V Lead Acid Battery Charger		857,306		246
Automatic Load Sensing Power Switch		128,448		15	*
Car Battery Charger		810,544		159	*
Dual Polarity Power Supply		301,582		84	*
Fixed Voltage Power Supply		272,582		52	*
High Current Power Supply		289,457		64	*
High Voltage High Current Power Supply		216,545		35	*
LASER Power Supply		246,365		28
Portable CD Player Adapter For Car		174,014		12	*
Power Supply		676,308		259	*
Solid State Tesla Coil NEW!		111,692		3
Solid State Tesla Coil/High Voltage Generator		377,921		50
Transformerless Power Supply		412,303		117	*
Voltage Inverter		298,123		51	*
Voltage Inverter II		169,024		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		536,760		182
3 Watt FM Transmitter	Rae XL Tkacik	289,056		81	*
50 Watt Amplifier		452,673		74
8 Note Tune Player		111,174		12	*
8 Watt Audio Amp		321,218		67	*
Aircraft Radio Communications Receiver		225,555		49	*
Crystal Radio		132,100		53	*
Digital Volume Control		290,152		47	*
Electronic Stethoscope		265,735		141	*
FET Audio Mixer		295,770		40
FM Transmitter		922,560		418
Guitar Fuzz Effect		199,423		52	*
Microphone Mixer	Anatoly I. Shikhatov	208,143		26	*
Mono To Stereo Synthesizer	oRbEq	93,866		18	*
One Tube Regenerative Radio NEW!		98,725		4	*
Op Amp Radio		334,941		80	*
Single Chip AM Radio NEW!		75,961		2	*
Single Chip FM Radio NEW!		126,847		1	*
Sound Level Meter		297,871		51	*
Stereo Tube Amplifier	Weslee Kinsler	227,101		15	*
Tone Control		261,731		31
Transistor Organ		157,625		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		133,557		27	*
FM Telephone Bug		197,581		57
Phone Busy Indicator		176,625		24	*
Remote Telephone Ringer		89,521		3	*
Ringing Phone Light Flasher		175,820		33	*
Simple Phone Tap	Derek Tombrello	325,207		98	*
Telephone Hold Button		93,734		9
Telephone Recorder		177,989		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.