8–51 The OP AMP circuit of Figure P8–51 has VS =2 ff – 15 V, ZS =50 ff+30 Ω, ZF = 100 ff– 45 Ω, and a VCC of ± 15 V.

(a) Find the output voltage VO across and the current IO through ZL when it is 1000 ff0 Ω.

(b) Find the output voltage VO across and the current IO through ZL when it is 500 ff – 90 Ω.

(c) If the input voltage is VS = 9ff0 V, repeat (a).

Transcribed Image Text:

Vs Zs ZF FIGURE P8-51 + Z1. Vo