What is Cathode or Emitter and Types of Cathode?
What is Cathode or Emitter and Types of Cathode? The substance employed for electron emission is called a cathode or emitter. It is an essential part of an electron tube. The usefulness of a particular material as an emitter depends on (i) emission efficiency (ii) mechanical strength (iii) longevity at normal operating temperatures and (iv) …
What is Cathode or Emitter and Types of Cathode? Read More »