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What is the full form of CRT?

Full form of CRT: Here, we are going to learn about the CRT, full form of CRT, overview, features, components, and applications. By Anushree Goswami Last updated : March 30, 2024

CRT Cathode Ray Tube

CRT is an abbreviation of Cathode Ray Tube. Cathode Ray Tube is a vacuum tube that accommodates one or more than one electron filled guns and a phosphorescent screen, which is used in television and conventional computer display. It operates by transferring electrons from the back of the tube in the direction of the display screen where it comes into collision with the phosphorous. The electrons light up and are projected on the display screen when they collide with the phosphorous inside the tube during the collision.

The three lights Red, Green, and Blue produce the color displayed on the screen and frequently alluded to as RGB.

Interference occurs, due to the Magnetic charges which are employed to show the way of electrons, when a speaker or other magnetic devices are placed near a CRT monitor. Magnetic charges are not used in LCDs and flat screens and this is the reason why they don't tackle these kinds of interference occurrence problems. In LCDs, the tube is also not present, due to which in comparison to CRT monitors their size looks much leaner. LCDs are superseding CRT monitors from both the markets of consumers as well as professionals because they very nearly match able with the standard of CRT monitors.

Image source: https://steemit.com/physics/@drifter1/physics-electromagnetism-cathode-ray-tubes-explained-using-electric-potential

CRT Features

• CRT has a huge physical size and a massive weight.
• CRT has a much more effective ratio of contrast and in dark images gives more perceptible specific facts. While CRT shortfall to give blazing white intensities in the LCD.
• CRT is completely at a low price and getting disappeared from the market. Almost all the manufacturers have put an end to the CRT production and it is very strenuous to find it in the market.
• CRT uses a ratio of 4:3 on the display screen. In conventional televisions, on top and bottom of the screen, a black bar is situated which shows that it is not prepared to use all the space of the screen. Whereas, LCD screens have much extensive width which shows that they have bar either small or not at all.

CRT Basic Components

• Electron Gun: A beam of electrons is produced by an electron gun.
• Anodes: electrons are accelerated by anodes.
• Horizontal and Vertical Deflection Plates: To modify the regulation of beam of electrons, these plates generate the low-frequency electromagnetic field which is needed.
• Fluorescent Screen: phosphor is used to make the fluorescent screen. When the electrons hit on it, it releases light.
• Evacuated Glass Envelope: The whole cathode ray tube is assembled or carried by an evacuated glass envelope.

CRT Applications

• CRT is used in cathode ray oscilloscope.
• CRT is used in radar as a display device.
• CRT is used in televisions and monitors.