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the figure represents a voltage regulato...


the figure represents a voltage regulator circuit using a zener diode. The breakdown voltage of the zener diode is 6 V and the load resistance is `R_(L)=4kOmega` the series resistance of the circuit is `R_(i)=1kOMega`. if the battery voltage `V_(B)` varies from 8 V to 16 V, what are the minimum and maximum values of the currect through Zener diode?

A

0.5 mA, 6 mA

B

0.5 mA, 8.5 mA

C

1.5 mA, 8.5 mA

D

1 mA, 8.5 mA

Text Solution

Verified by Experts

The correct Answer is:
B

For `V_0 = 8` Volt
`i_0=(8-6)/1000=2mA,i_2=6/4000=1.5mA`
`:. i_1=(2-1.5)=0.5mA`
for `v_0=16` Volt, `i._0=10/(1000)=10mA,i._2=1.5mA`
`:. i._1=10-1.5=8.5mA`
`implies i._1-i_1=8mA`
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