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Analog Electronics - Engineering

Q1:

In figure the zener current

A is always 130 mA

B may vary between 10 mA and 130 mA

C may vary between 60 mA and 130 mA

D is always equal to 65 mA

ANS:B - may vary between 10 mA and 130 mA

When IL = 0, Zener current = 130 mA, when IL = 120 mA, zener current (t = 10 mA).