A cathode ray tube consists of one or more electron guns, possibly internal electrostatic deflection plates and a phosphor target. The operation of a CRT monitor is basically very simple. Usually, A CRT has a fluorescent screen to display the output signal. The source of the electron beam is the electron gun the gun is located in the narrow, cylindrical neck at the extreme rear of a CRT which produces a stream of electrons through thermionic emission. The working of CRT depends on movement of an electron beam which moves back and forth across the back of the screen. Before we go to study all these parts in detail it will be suitable to have some basic knowledge regarding the function of these parts on individual and constitutive basis.Ĭathode Ray Tube (CRT) is a computer display screen, used to display the output in a standard composite video signal. The following figure shows the main part of cathode ray tube. Base to provide connection to external circuitry Glass envelope to assemble whole cathode ray tubeĥ. Fluorescent screen for production of displayingĤ. Deflection plate assembly for deflection of electron beamģ. What are the parts of Cathode ray tube?Ģ. It is very important part of cathode ray oscilloscope being like heart of whole oscilloscope system.
Cathode ray tube is a display device that is used for displaying an electrical signal upon two-dimensional display screens by using principle of fluorescence that is resulted from reaction of electrons and fluorescent chemicals.
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