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Electronics and Communication Engineering - Communication Systems - Discussion

Discussion Forum : Communication Systems - Section 3 (Q.No. 12)
Communication Systems
12.
In a Vidicon camera tube
grid G1 accelerates electrons
grid G2 accelerates electrons and grid G3, slows down electrons
grid G3 accelerates electrons and grid G2 slows down electrons
both grids G2 and G3 accelerate electrons
Answer: Option
Explanation:

Grid G2 accelerates the electrons. Grid G3, is focus grid and slows the electrons so that they fall perpendicularly on the target at a low speed without causing secondary emission.

Discussion:
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