# Question: problem 3 30 points given the commoncollector amplifier cc...

###### Question details

**Problem # 3**

(30 points)

Given the common-collector amplifier (C.C.) in figure 3, determine:

a. The emitter current
**I _{E}**

_{,}b. The collector current
**I _{C}**

_{,}c. The collector-emitter voltage
**V _{CE}**, knowing that

**β**.

_{dc}= β_{ac}= 80d. Sketch the **AC** equivalent circuit, using the
**r _{e} model** for the common-collector BJT,
and

determine: The input impedance
**Z _{i}**, the output impedance

**Z**, assuming

_{o}**r**and he open-

_{o}= ∞ output voltage gain
**A _{V}**.

*Hint: use Thevenin equivalent circuit approach.*

Figure 3