(a) Show that if the op amp in the circuit of Fig. 2.12 has a finite open-loop gain A
Chapter 2, Problem 2.12(choose chapter or problem)
(a) Show that if the op amp in the circuit of Fig. 2.12 has a finite open-loop gain A, then the closed-loop gain is given by Eq. (2.11). (b) For R1 = 1 k and R2 = 9 k find the percentage deviation e of the closed-loop gain from the ideal value of (1 + R2/R1) for the cases A = 103 , 104 , and 105 . For vI = 1 V, find in each case the voltage between the two input terminals of the op amp. A
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