I have been testing various parameters of a op amp controlled linear voltage regulator using a zener diode, and have noticed that as the load resistance decreases in linear steps, the voltage across the load seems to decrease in a non linear fashion.
looking at the graph the voltage seems to decrease by a small amount when the load resistance is lowered from 11 ohms to 9 ohms, however when resistance value is decreased below 9 ohms the voltage decreases much more rapidly and in linear fashion.
this does not follow ohms law and does not make sense to me at this point in time.
It would be great if somebody could explain this to me
Thankyou
-Con
looking at the graph the voltage seems to decrease by a small amount when the load resistance is lowered from 11 ohms to 9 ohms, however when resistance value is decreased below 9 ohms the voltage decreases much more rapidly and in linear fashion.
this does not follow ohms law and does not make sense to me at this point in time.
It would be great if somebody could explain this to me
Thankyou
-Con
Attachments
-
193.9 KB Views: 45
-
189 KB Views: 76