(a) The bias voltage in the circuit in Figure P5.31 is changed to \(V_{C C}=9 \mathrm{~V}\). The transistor current gain is \(\beta=80\). Design the circuit such that \(I_{C Q}=0.25 \mathrm{~mA}\) and \(V_{C E Q}=4.5 \mathrm{~V}\).

(b) If the transistor is replaced by a new one with \(\beta=120\), find the new values of \(I_{C Q}\) and \(V_{C E Q}\).

(c) Sketch the load line and \(Q\)-point for both parts (a) and (b).

Transcribed Image Text:

Vcc 24 V Rs. RC Figure P5.31