A Zener diode is connected in a voltage regulator circuit as shown in figure.2. The Zener voltage at Iz = 0 is 15V and Zener incremental resistance 0.2Ω. (a) Determine the value of Ri such that Zener diode remains in breakdown if the load current IL varies from 50 to 500 mA and if the input voltage VI varies from 20 to 30 V. Assume Izmin = 0.2Izmax

Question

A Zener diode is connected in a voltage regulator circuit as shown in figure.2. The
Zener voltage at Iz = 0 is 15V and Zener incremental resistance 0.2Ω. (a) Determine
the value of Ri such that Zener diode remains in breakdown if the load current IL varies
from 50 to 500 mA and if the input voltage VI varies from 20 to 30 V. Assume Izmin =
0.2Izmax

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