Chapter 9, Problem 19P

For the transistor network in Fig. 9.143.

a. Find the Thevenin equivalent circuit for that portion of the network to the left of the base (B) terminal.

b. Using the fact that $I_c=I_{E}and$ $V_{CE}=\text{8V},$ determine the magnitude of $I_E.$

c. Using the results of parts (a) and (b), calculate the base current $l_8$

if $V_{BE}=\text{0}\text{.7V}$

d. What is the voltage $V_c?$

Fig,9.143