CRT MONITOR cathode-ray tube



Disadvantages of CRT

They have a big back and take up space on desk.
The electromagnetic fields emitted by CRT monitors constitute a health hazard to the functioning of living cells.
CRTs emit a small amount of X-ray band radiation which can result in a health hazard.
Constant refreshing of CRT monitors can result in headache.
CRTs operate at very high voltage which can overheat system or result in an implosion
Within a CRT a strong vacuum exists in it ....etc

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Introduction

The earliest version of the CRT was invented by the German physicist Ferdinand Braun in 1897 and is also known as the Braun tube. It was a cold-cathode diode, a modification of theCrookes tube with a phosphor-coated screen.

A cathode ray tube is a vacuum tube which consists of one or more electron guns, possibly internal electrostatic deflection plates, and a phosphor target. In television sets and computer monitors, the entire front area of the tube is scanned repetitive ....etc

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Abstract:
This is one of great project based on AVR microcontroller. It use ATmega32 as processor and LCD 128×64 pixels for display. If you need to measure low frequency i thought this project, AVR oscilloscope, will be usefull. Maksimum frequency for AVR oscilloscope is 5 kHz (square signal), other signals (sine or triangle) the frequency is lower ( almost 1 kHz) for having clear view of the signal. Voltage input range is 24V AC / 30V DC.
This project use C language and CODEVISION as compiler. So, it will be more easy to understand t ....etc

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Thanks very much. I was looking for this type of animation for very long time .thnak you again keep the good work
No. Thanks very much.. I was looking for this type of animation for very long time .thnak you again keep the good work ....etc

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More and more experimentsare now ‘PC-assisted.’ Alsoconventional acquisition systemsare very expensive. Since portablePCs are today common and a USB linkis a better solution than an old ISA bus,here we present an oscilloscope usingUSB port of the PC that operates at upto 10 kHz with ±16V input voltage. Ithas much more improved features thanthe PC-based oscilloscope and LEDscope for audio servicing published inEFY Dec. 2002 and Electronics ProjectsVol. 8, respectively. The oscilloscopeuses IC PIC18F2550 from Microchipas the main controller ....etc

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plz send me a readymade animated ppt on working of a cro
....etc

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working of cathode ray oscilloscope animation ....etc

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Cathode Ray Oscilloscope


Information given by oscilloscopes

Time and voltage
Frequency and phase
DC and AC components
Rise and fall time
Mathematical analysis
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DIGITAL STORAGE OSCILLOSCOPE

What is an OSCILLOSCOPE ??
An oscilloscope (also known as a scope) is a type of electronic test instrument that allows observation of constantly varying signal voltages, usually as a two-dimensional graph of one or more electrical potential differences.
A Digital Storage Oscilloscope (DSO)
A DSO is also like a conventional oscilloscope except that it uses digital memory to store the waveform. Thus it first digitizes the input analog signal by an analog to digital convertor and di ....etc

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Introduction:
Look and play
Read instructions
Break into smaller parts
Decide on a simple measurement
Increase your level of difficulty
Record pathway. How you got there.
Store directions and short-cuts


Cathode Ray Oscilloscope
Popular instrument to show time, voltage both DC and AC. Shows Volts / Time.
Display waveforms. Spectrum scope shows volts to Frequency
Cathode (-ve ) is heated, emits electrons, accelerated toward a (+ve) fluorescent screen. Intensity gri ....etc

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