A Zener diode regulator shown in the figure given below is to be designed to meet the following specifications IL = 10 mA, V0 = 10 V, Vin varies from 30 V to 50 V. The zener diode has VZ = 10 V and IZK (knee current) = 1 mA. For satisfactory operation, which one of the following is correct?

A Zener diode regulator shown in the figure given below is to be desig

1.	A Zener diode regulator shown in the figure given below is to be designed to meet the following specifications IL = 10 mA, V0 = 10 V, Vin varies from 30 V to 50 V. The zener diode has VZ = 10 V and IZK (knee current) = 1 mA. For satisfactory operation, which one of the following is correct?
A.	R 1800
B.	2000 R 2200
C.	3700 R 4000
D.	R > 4000
Answer» B. 2000 R 2200

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A Zener diode regulator shown in the figure given below is to be designed to meet the following specifications IL = 10 mA, V0 = 10 V, Vin varies from 30 V to 50 V. The zener diode has VZ = 10 V and IZK (knee current) = 1 mA. For satisfactory operation, which one of the following is correct?

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