Q2 A circuit with an unstable DC voltage source Vs and output Vzis shown in Figure Q2. The unstable DC voltage source has nominal 20V but it can vary as much as +/- 20%. The circuit contains a zener...

Extracted text: Q2 A circuit with an unstable DC voltage source Vs and output Vzis shown in Figure Q2. The unstable DC voltage source has nominal 20V but it can vary as much as +/- 20%. The circuit contains a zener diode. The zener diode has voltage Vz = 7.2V when Iz 2mA, rz = 202 and its IzK = 0.5mA. Using the zener diode mode and without making further approximation, answer the following questions. Rs = 2502 Vz %3D Vs RL Figure Q2. a) Detemine RL such that Vz = 8V when Vs at its nominal level. b) Based on the result in a), determine the difference between the maximum Vz and the minimum Vz.