where the constant B is evaluated from the initial condition.
When the circuit is first energized and the initial inductor current is zero, a
transient occurs before the load current reaches a steady-state condition. At
steady state, io is periodic and symmetric about zero, as illustrated in Fig. 8-2. Let
the initial condition for the current described in Eq. (8-1) be Imin, and let the initial
condition for the current described in Eq. (8-2) be Imax.
Evaluating Eq. (8-1) at t=0,