(Solved): The Zener diode in the voltage-regulator circuit of Fig. has a constant reverse breakdown voltage V ...
The Zener diode in the voltage-regulator circuit of Fig. has a constant reverse breakdown voltage VZ?=8.2V, for 75mA?iZ??1A. If RL?=9?, size RS? so that vL?=VZ? is regulated to (maintained at) 8.2V while Vb? varies by \pm 10 percent from its nominal value of 12V.