Question

2.A common-emitter circuit with an emitter bypass capacitor is shown in Figure 2(a) and its small-signal equivalent is as in Figure 2(b). Let V' = 10 V, V-=-10 V, RE-4 kQ. Re 2 kQ, CE 50 μF, VED(0) 0.7 V, β 100, VT 0.026 V and VA- Prove that the voltage gain transfer function of the circuit is given by: a) b) Find the values of the time constants τΑ and t, and the corresponding corner frequencies fa and fa. c) Determine the values of the two limiting horizontal asymptotes la,lo-o and 14,'10-*oo . (Hint: As ω ., 0, CE acts as an open circuit, as ω ., oo, CE acts as a short circuit.) v+ 0 Figure 2