Q. If the pulse is applied to the primary of the pulse transformer, an emf or voltage is induced in the secondary of the pulse transformer. To which commutation scheme is this applicable?

A
Class B Commutation
B
Class C Commutation
C
Class D Commutation
D
Class E Commutation
Solution:

In class E commutation, an external pulse source is used to produce the reverse voltage across the SCR. If the SCR need to be commutated, pulse duration equal to the turn OFF time of the SCR is applied. When the SCR is triggered, load current flows through the pulse transformer.If the pulse is applied to the primary of the pulse transformer, an emf or voltage is induced in the secondary of the pulse transformer.

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