HW11 P2 resonant intervals

In problem 2 it seems like the resonant intervals should be intervals 3 and 5 only, not intervals 2, 3, 5, and 6 as stated in the problem. Anyone agree or disagree?

HW11, prob1

Hey,

Can anyone give me a hint to solve prob.1 on the homework. I am stuck with the selection of Vg.

HW11, pb 2

Hello All,

In pb 2, how steady-state value of clamped capacitor Vs be estimated ?
In forward converter, we can estimated as if it is operating as PWM.

However, on flyback, if I use the same procedure (PWM), I end up
with Vs equal to V/n, which is going to violate ZVS condition for Q2.

Thanks,
Tanto