The secondary voltage in the circuit in Figure P2.28 is (v_{s}=12 sin omega t mathrm{~V}). The Zener

Question:

The secondary voltage in the circuit in Figure P2.28 is $v_{s}=12 \sin \omega t \mathrm{~V}$. The Zener diode has parameters $V_{Z}=8 \mathrm{~V}$ at $I_{Z}=100 \mathrm{~mA}$ and $r_{z}=0.5 \Omega$. Let $V_{\gamma}=0$ and $R_{i}=3 \Omega$. Determine the percent regulation for load currents between $I_{L}=0.2$ and $1 \mathrm{~A}$. Find $C$ such that the ripple voltage is no larger than $0.8 \mathrm{~V}$. image text in transcribed