Consider the circuit shown in Figure P10.75. The transistor parameters are (I_{S 1}=5 times 10^{-16} mathrm{~A}, I_{S

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Consider the circuit shown in Figure P10.75. The transistor parameters are \(I_{S 1}=5 \times 10^{-16} \mathrm{~A}, I_{S 2}=10^{-15} \mathrm{~A}, \beta_{1}=180, \beta_{2}=120, V_{A 1}=120 \mathrm{~V}\), and \(V_{A 2}=80 \mathrm{~V}\). The \(Q\)-point is \(V_{O}=1.25 \mathrm{~V}\) and \(I_{C Q}=200 \mu \mathrm{A}\).

(a) Determine the small-signal voltage gain,

(b) determine \(V_{I}\), and

(c) determine \(V_{B}\).

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