Cathode Ray Tube (CRT)

The cathode ray Tube (CRT) is the heart of the C.R.O. the CRT generates the electron beam, accelerates the beam, deflects the beam and also has a screen where beam becomes visible as a spot. The main parts of the CRT are:

1. Electron Gun

2. Deflection system

3. Fluorescent screen

4. Glass tube or envelope

5. Base

A schematic diagram of CRT, showing its structure and main components is shown in the figure below.