Exercises
2.2 consider an op amp that is ideal except that its open-loop gain A = 103 . The op amp is used in a feedback circuit and voltages appearing at two of its three signal terminals are measured. In each of the following cases, use the measured values to fine the expected value of the voltage at the third terminal. (a) u2 =0 V and u3 = 2 V; (b) u2 = +5 V and u3 = -10 V: (c) u1 = 1.002 V and u2 = 0.998 V; (d) u1 = -3.6 V
Ans (a) u1 = - 0.002 V; (b) u1 = +5.01 V; (c) u3 = -4 V; (d) u2 = -3.6036 V;