For the network of Fig. 5.158, given the circuit parameters, calculate the necessary values. Assume Vbe = 0.7 V and Vo.

here are the solutions for Problems 19, 20, and 21.

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: For the network of Fig. 5.158:
Given: $V_{CC} = 20 \, \text{V}$, $R_B = 390 \, \text{k}\Omega$, $R_C = 2.2 \, \text{k}\Omega$, $R_E = 1.2 \, \text{k}\Omega$, $\beta = 140$, $r_o = 100 \, \text{k}\Omega$.
Assume $V_{BE} = 0.7 \, \text{V}$ and $V_