Question

9.43 O An npn BJT is connected in the feedback- bias configuration of Fig. 9.76 with Rs 0, RL - 10 kS2, Vc 12 V, and VEE 0 (a) Choose values of R1 through R4 so that IC ? 1.4 mA and the midband-gain is ahout -200 if B lies somewhere in the range 50 to 200. Compute values for 8m and r? (b) Choose capacitor values so that the breakpoint fre- quency of Cs occurs at 0.5 Hz and the breakpoint frequency of Cc at 5 Hz. Choose CE so that the emitter is effectively bypassed to ground at about 60 Hz. (c) Draw the magnitude Bode plot of the amplifier gain. (d) Modify your choice of capacitors so that only stan- dard 20% values are used. Recalculate the modified breakpoint frequencies of the Bode plot

Answer 1

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