(ii) A dc supply of 160 V is supplying power to a clamped inductive load through a power transistor. Assuming large inductance, a constant current of 7.1 A flows in the circuit. Duty cycle D=0.5, switching frequency is 100 kHz. During turn-off t_fi=0.3 s and t_rv = 0.6 s. Device current should not exceed 1.5 times of the rated load current.

(a) Determine the turn-off loss.

(b) Design a snubber circuit to bring turn-off time to 0.4 s. Specify the ratings of each component used.

(c) With snubber calculate the switching turn-off power loss