Anonymous
Jan 18
With the help of diagram explain the parts of CRT ?
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Jan 18
Sure! Here is a diagram explaining the parts of a Cathode Ray Tube (CRT):
1. Electron Gun: This is the source of electrons in the CRT. It consists of a cathode, which emits electrons when heated, and control grids that control the flow of electrons.
2. Deflection Plates: These are two sets of metal plates located on either side of the electron gun. They are used to control the movement of the electron beam horizontally (X-axis) and vertically (Y-axis) to create the desired image on the screen.
3. Focusing Anode: This is a positively charged electrode that helps to focus the electron beam into a narrow spot.
4. Phosphor Coating: The inner surface of the CRT screen is coated with a layer of phosphor. When the electron beam strikes the phosphor, it emits light, creating the visible image on the screen.
5. Shadow Mask/Aperture Grill: This is a metal plate with tiny holes or slots that is placed between the electron gun and the phosphor coating. It helps to ensure that the electron beam hits the correct phosphor dots on the screen, preventing color bleeding and ensuring accurate color reproduction.
6. Electron Beam: This is a stream of high-speed electrons emitted from the electron gun. It travels towards the screen and strikes the phosphor coating, causing it to emit light.
7. Screen: This is the front surface of the CRT where the image is displayed. It is made of glass and coated with phosphor.
8. Yoke: The yoke is a coil of wire that surrounds the neck of the CRT. It generates a magnetic field that interacts with the electron beam, allowing it to be deflected and controlled by the deflection plates.
9. Neck: The neck of the CRT is the narrow part that connects the electron gun to the screen. It houses the electron beam and allows it to travel from the gun to the screen.
10. Glass Envelope: This is the outer glass casing of the CRT that protects the internal components and helps maintain a vacuum inside the tube.
Note: The diagram may vary slightly depending on the specific design of the CRT, but these are the main components found in most CRTs.
1. Electron Gun: This is the source of electrons in the CRT. It consists of a cathode, which emits electrons when heated, and control grids that control the flow of electrons.
2. Deflection Plates: These are two sets of metal plates located on either side of the electron gun. They are used to control the movement of the electron beam horizontally (X-axis) and vertically (Y-axis) to create the desired image on the screen.
3. Focusing Anode: This is a positively charged electrode that helps to focus the electron beam into a narrow spot.
4. Phosphor Coating: The inner surface of the CRT screen is coated with a layer of phosphor. When the electron beam strikes the phosphor, it emits light, creating the visible image on the screen.
5. Shadow Mask/Aperture Grill: This is a metal plate with tiny holes or slots that is placed between the electron gun and the phosphor coating. It helps to ensure that the electron beam hits the correct phosphor dots on the screen, preventing color bleeding and ensuring accurate color reproduction.
6. Electron Beam: This is a stream of high-speed electrons emitted from the electron gun. It travels towards the screen and strikes the phosphor coating, causing it to emit light.
7. Screen: This is the front surface of the CRT where the image is displayed. It is made of glass and coated with phosphor.
8. Yoke: The yoke is a coil of wire that surrounds the neck of the CRT. It generates a magnetic field that interacts with the electron beam, allowing it to be deflected and controlled by the deflection plates.
9. Neck: The neck of the CRT is the narrow part that connects the electron gun to the screen. It houses the electron beam and allows it to travel from the gun to the screen.
10. Glass Envelope: This is the outer glass casing of the CRT that protects the internal components and helps maintain a vacuum inside the tube.
Note: The diagram may vary slightly depending on the specific design of the CRT, but these are the main components found in most CRTs.
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