Cathode Ray Tube (CRT):
CRT stands for Cathode Ray Tube. CRT is a technology used in traditional computer monitors and televisions. The image on CRT display is created by firing electrons from the back of the tube of phosphorus located towards the front of the screen.
If electron heats the phosphorus, they light up, and they are projected on a screen. The colors you view on the screen is produced by a blend of red, green and blue light (RGB)
Components of CRT:
Main Components of CRT are:
Electron Gun: Electron gun consisting of a series of elements, primarily a heater and a cathode. The electron gun creates a source of electrons which are focused into a narrow beam directed at the face of the CRT.
Control Electrode: It is used to turn the electron beam on and off.
Focusing system: It is used to create a clear picture by focusing the electrons into a narrow beam.
Deflection Yoke: It is used to control the direction of the electron beam. It creates an electric or magnetic field which will bend the electron beam as it passes through the area. In a conventional CRT, the yoke is linked to a sweep or scan generator. Actually its Deflected on two ways i.e. Horizontal and Vertical direction by thought which one have high energy electrons.
Phosphorus-coated screen: The inside front surface of every CRT is coated with phosphors. Phosphors glow when a high-energy electron beam hits them and finally you can see the light on that part.
