(a) For the circuit shown in Figure P5.64, assume that the transistor current gain is \(\beta=90\) and that the circuit parameter is \(R_{T H}=2.4 \mathrm{k} \Omega\). Design the circuit such that \(V_{E C Q}=1.5 \mathrm{~V}\). Find \(I_{B Q}, I_{C Q}, R_{1}\), and \(R_{2}\).

(b) Determine the values of \(I_{B Q}, I_{C Q}\), and \(V_{E C Q}\) if the current gain is changed to \(\beta=130\).

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CC V+ 3.3 V Figure P5.64 R R RE= 2 KS2 RC=