JITUlease some body help me out to understand re model of transistor

 

The short story is: a small base current controls a larger collector current. The short explanation is that it does this by changing the potential barrier in the crystalline lattice of the semiconductor material. The lowerering of this potential barrier is what allows the increase in current carriers.

Now do you have a more specific question?

 

I was able to google this link to a slide presentation. It looks like it is fairly thorough coverage of many of the models that are used to study different aspects of the BJT transistors. It includes treatment of the Re model.

hgmjr

 

A handy reference, but a bit short on explanations. I think the OP is going to need a bit more here, but we have to start somewhere.

Did you understand the part about a two port model being represented by a linear operator, the 2 x 2 matrix of parameters?