Ex 6.2: For the circuit in Figure 6.3, assume transistor parameters of β = 150, VBE(on) = 0.7 V, and VA = 150 V. The circuit parameters are VCC = 5 V, VBB = 1.025 V, RB = 100 kΩ, and RC = 6 kΩ. (a) Determine the small-signal hybrid- π parameters gm, rπ, and ro. (b) Find the small-signal voltage gain Av = Vo/Vs. (Ans. (a) gm = 18.75 mA/V, rπ = 8 kΩ, ro = 308 kΩ; (b) Av = −8.17) EXERCISE PROBLEM

Ex 6.2: For the circuit in Figure 6.3, assume transistor parameters of β = 150, VBE(on) = 0.7 V, and VA = 150 V. The circuit parameters are VCC = 5 V, VBB = 1.025 V, RB = 100 kΩ, and RC = 6 kΩ. (a) Determine the small-signal hybrid- π parameters gm, rπ, and ro. (b) Find the small-signal voltage gain Av = Vo/Vs. (Ans. (a) gm = 18.75 mA/V, rπ = 8 kΩ, ro = 308 kΩ; (b) Av = −8.17) EXERCISE PROBLEM

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EXERCISE PROBLEM Ex 6.2: For the circuit in Figure 6.3, assume transistor parameters of β = 150 , V B E ( on ) = 0.7 V , and V A = 150 V . The circuit parameters are V C C = 5 V , V B B = 1.025 V , R B = 100 k Ω , and R C = 6 k Ω . (a) Determine the small-signal hybrid- π parameters g m , r π , and r o . (b) Find the small-signal voltage gain A v = V o / V s . (Ans. (a) g m = 18.75 mA / V , r π = 8 k Ω , r o = 308 k Ω ; (b) A v = 8.17 )

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