![]() Delay Line – It provides a certain signal delay that is applied to vertical deflection plates of CRT.Vertical Amplifier – It amplifies the input signal for display on the CRT screen. ![]() ![]() Cathode Ray Tube – Through this mechanism, electrons are emitted and controlled to form the desired signal image on the fluorescent screen.CRO System (Image credit: It consists of: Now that we have learnt the basics of how a CRT works, let’s move onto learning about a CRO.Īs mentioned, a CRO is a device that is used for measuring and displaying different forms of electrical signals. These provide an electric field that acts on the electron beam, rendering them a vertical and horizontal motion.Īfter passing through this final stage, the electron beam strikes the fluorescent screen to give a glow.ĬRTs generally find applications in forming television screens. The beam then moves towards a set of horizontal and vertical deflection plates. Note here that both pre-accelerating and accelerating anodes are connected to a common positive potential of 1500 volts.Īll these components collectively form the electron gun. Accelerating anode – Its job is to again accelerate the newly aligned electron beam.Focusing Anode – It helps align the incoming electron beam.Pre-accelerating anode – Provides acceleration to the anode before entering the Focusing Anode.The entire structure is made from nickel. Grid – It is kept at a negative potential and helps control the intensity of the electron beam moving towards the anode. ![]() In order to achieve this, a layer of barium oxide is coated on one end of the cathode.
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