In the Flyback converter, when the winding ratio n₁=1, the input voltage is 30V, the load resistance is 5, the switching cycle is 100s, and the output voltage is required from 10v to 45v, obtain the following. However, it is assumed that the magnetizing current is continuous.

(a) Range of duty ratio D

(b) Find the minimum value of the magnetic inductance for continuous magnetic current within the duty ratio of (a).

(c) Within the duty ratio range of (a), when the inductance of the magnetic inductor is given a value of (b), obtain the maximum value of the switch current.

(d) Maximum value of switch end voltage