Consider the circuit of with VCC 5 5 V, RB 5 10 kV, and RC 5 2.0 kV, plus an additional resistance REB 5 10 kV connected in parallel with the E-B junction of the BJT. Moreover, let the BJT have Is 5 5...

Consider the circuit of with VCC 5 5 V, RB 5 10 kV, and RC 5 2.0 kV, plus an additional resistance REB 5 10 kV connected in parallel with the E-B junction of the BJT. Moreover, let the BJT have Is 5 5 fA, F 5 125, and VA 5 `. (a) Show that we have vI 5 5 2 104 iB 2 2vEB, where iB is the current out of the base, and vEB is the voltage drop across the E-B junction (vI and vEB are in V, iB is in A). (b) Find vI1 needed to achieve vO1 5 2 V, and vI2 needed to achieve vO2 5 3 V. Hence, estimate the voltage gain of your circuit as a > (vO2 2 vO1)y (vI2 2 vO1). (c) Sketch and label vI and vO versus time if vI is a 1-kHz sine wave alternating between vI1 and vI2.