Chapter 7, Problem 7.7EP

The circuit shown in Figure 7.27(a) has parameters $V^{+}=10\text{V}$ , $V^{-}=-10\text{V}$ , $R_S=0.5\text{kΩ}$ , $R_E=4\text{kΩ}$ ,and $R_C=2\text{kΩ}$ .Thetransistor parameters are: $V_{BE}\text{(on)}=0.7\text{V}$ , $V_A=\infty$ , and $\beta =100$ . (a) Determine the value of $C_E$ such that the low−frequency 3 dB point is $f_B=200\text{Hz}$ . (b) Using the results frompart (a), determine $f_A$ . (Ans. (a) $C_E=49.5\mu \text{F}$ , (b) $f_A=0.80\text{Hz}$ )