Repeat the analysis of problem 15 for the network of Fig. 9.82 with the addition of a sour resistance and signal source as shown in Fig. 9.86 . Plot the gain Avs = V_o V_s and comment on the change in low-frequency cutoff as compared to problem 17.

problem 17

Repeat Problem 15 for the emitter-follower network of Fig. 9.82.

Fig. 9.82

problem 15 

For the network of Fig. 9.80 :

a. Determine r_e.
b. Find Avmid = V_o/V_i.
c. Calculate Z _i.
d. Determine f_LS, f_LC, and f_LE.
e. Determine the low cutoff frequency.
f. Sketch the asymptotes of the Bode plot defined by the cutoff frequencies of part (d).
g. Sketch the low-frequency response for the amplifier using the results of part (e).

Fig. 9.80

Transcribed Image Text:

14 V Cw, = 8 pF Cw, = 10 pF Che = 20 pF Che = 30 pF Cee = 12 pF 120 k2 B = 100 %3D 0.1 µF 0.1 µF C9 30 k2 2.2 k2 8.2 k2 TOP