i was revising the hybrid parameters in the transistor ac analysis . i was reading boylstead and my question is not related to the book but it was given that h11 or hie= Vi/Ii | Vo=0 i.e., input resistance is equal to input voltage by input current when output is shorted why should we do that i mean why should we short output when finding input resistance and why should we open input when finding output resistance is there any specific reason for doing so ...........?
i know that there is a reason for everything and some one pls tell me that thank you .
i know that there is a reason for everything and some one pls tell me that thank you .