(Solved): 4. In the circuit below, the transistor parameters are =200 and VA=100V. The Q-point is ICQ ...

4. In the circuit below, the transistor parameters are $?=200$ and $V_A=100\mathrm{V}$. The Q-point is ${\mathrm{I}}_{\mathrm{CQ}}=4.12\mathrm{mA}{\mathrm{V}}_{\mathrm{CEQ}}=11.7\mathrm{V}$. a. (3pts.) Calculate the hybrid- $?$ parameters $g_m,r_0$, and $r_{?}$. b. (1pt.) What is the purpose of the ${\mathrm{C}}_{\mathrm{C}2}$ capacitor? c. (5pts.) Sketch the small-signal equivalent circuit. d. (5pts.) Calculate the voltage gain $A_v=\frac{V_0}{V_S}$. e. (5pts.) Calculate the output resistance, ${\mathrm{R}}_0$.