Chapter 5, Problem 5.30P

The circuit shown in Figure P5.30 is to be designed such that $I_{CQ}\text{=0}\text{.8mA}$ and $V_{CEQ}=2\text{V}$ for the case when (a) $R_E=0$ and (b) $R_E=1\text{kΩ}$ . Assume $\beta =80$ . (c) The transistor in Figure P5.30 is replaced with one with a value of $\beta =120$ . Using the results of parts (a) and (b), determine the Q−point values $I_{CQ}$ and $V_{CEQ}$ . Which design shows the smallest change in Q−point values?

Figure P5.30