(a) The circuit shown in Figure P5.40 is to be designed such that \(I_{C Q}=\) \(0.5 \mathrm{~mA}\) and \(V_{C E Q}=2.5 \mathrm{~V}\). Assume \(\beta=120\). Sketch the load line and plot the \(Q\)-point.

(b) Pick standard values of resistors that are close to the designed values. Assume that the standard resistor values vary by \(\pm 10\) percent. Plot the load lines and \(Q\)-point values for the maximum and minimum values of \(R_{B}\) and \(R_{C}\) values (four \(Q\)-point values).

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Vcc=5V www RB RC Figure P5.40