thanks sir,
thank you for homework...
I not understand more for this homework because I steady first time amplifier......
please can you explain how I can analysis same this (in red square )?
I have small question, what different between (gm v-bi) &(B ib )?
what meant by transconductance ?
when I use (gm v-bi) and (B ib ) in circuit?
is mean the (gm v-bi) = (B ib ) same in calculation?
thanks
The small signal AC model is a linear model that does not consider DC biases. Thus the collector resistor is connected to (AC) ground for the purpose of the analysis.