Question 237: Semiconductors and Logic Gates

Question

The circuit shown below is working as a 8 V
dc regulated voltage source. When 12 V is used
as input, the power dissipated (in mW) in each
diode is; (considering both zener diodes are
identical) _________.

Accepted Answer

Current in circuit = $${{12 - 8} \over {200 + 200}}$$ = 10
-2
A
So power dissipited in each diode = VI
= 4 $$ 	imes $$ 10
-2
= 40 mW

Semiconductors and Logic Gates

The circuit shown below is working as a 8 V dc regulated voltage source. When 12 V is used as input, the power dissipated (in mW) in each diode is; (considering both zener diodes are identical) _________.

Choose the correct answer: