The parameters of the circuit in Figure P6.67 are \(V_{C C}=9 \mathrm{~V}, R_{L}=4 \mathrm{k} \Omega\), \(R_{C}=6 \mathrm{k} \Omega, R_{E}=3 \mathrm{k} \Omega, R_{1}=150 \mathrm{k} \Omega\), and \(R_{2}=50 \mathrm{k} \Omega\). The transistor parameters are \(\beta=125, V_{B E}(\) on \()=0.7 \mathrm{~V}\), and \(V_{A}=\infty\). The input signal is a current.

(a) Determine the \(Q\)-point values.

(b) Determine the transresistance function \(R_{m}=v_{o} / i_{s}\).

(c) Find the small-signal voltage gain \(A_{v}=v_{o} / v_{s}\).

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