A 9V voltage regulator is rated to have a load regulation of

A 9-V voltage regulator is rated to have a load regulation of 0.150 V for a maximum load current of 15 mA. Assuming a no-load output voltage of 8.9V, what is the expected output voltage at the maximum load current.

Solution

voltage regulation=((Vnl-Vfl)/Vfl)*100

No load voltage,Vnl=8.9 volts

given load regulation has voltage units=0.15 volts= (Vnl-Vfl)

V full load=Vnl-0.15=8.9-0.15=8.75 volts

If given voltage regulation is 0.15

then (Vnl-Vfl)/Vfl=0.15

Vnl/Vfl=0.15+1

Vfl=Vnl/1.15=8.9/1.15=7.739 volts