Question

The datasheet for a 5 V, three-terminal voltage regulator indicates that the output voltage changes by 3 mV when the input voltage is varied from 7 V to 25 V, and the output voltage varies by 5 mV when the load is varied from 0.01 A to the full load of 1 A. The line- and load regulation are respectively which of the following?

a. 6.7mΩ
b. 0.01Ω
c. 0.1Ω
d. 20mΩ

Answer 1

0.01 Ω

Step-by-step explanation:

Given that the output voltage varies by 5 mV when loaded from 0.01 A to 1 A

Therefore, the regulators output resistance is given by :

`$I_L=(V_L)/(R_L)$`

`$(1.00 - 0.01)A= (5 \ mV)/(R_L)$`

`$0.99 \ A= (5 \ mV)/(R_L)$`

∴ The line and load regulation is 0.01 Ω