a. Determine the mathematical expressions for iL and υL following the closing of the switc...

a. Determine the mathematical expressions for iL and υL following the closing of the switch in Fig. 1. The steady-state values of iL and υL are established before the switch is closed.

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b. Determine iL and υL after two time constants of the storage phase.

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c. Write the mathematical expressions for the current iL and the voltage υL if the switch is opened at the instant defined by part (b).

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d. Sketch the waveforms of iL and υL for parts (a) and (c).

FIG. 1