(a) A four-resistor bias network is to be designed with the configuration shown in Figure P5.77. The \(Q\)-point values are to be \(I_{C Q}=100 \mu \mathrm{A}\) and \(V_{E C Q}=3 \mathrm{~V}\). The bias voltages are \(V^{+}=3 \mathrm{~V}\) and \(V^{-}=-3 \mathrm{~V}\). A transistor with \(\beta=110\) is available. The voltage across the emitter resistor should be approximately \(0.7 \mathrm{~V}\).

(b) The transistor in part (a) is replaced with one with \(\beta=150\). What is the resulting \(Q\)-point?

Transcribed Image Text:

R RE R RC V- Figure P5.77