4.83 The op amp in the precision rectifier circuit of Fig. P4.83 is ideal with output saturation levels of ±13 V. Assume that when conducting, the diode exhibits a constant voltage drop of 0.7 V. Find v−, vO, and vA for:
(a)vI = +1V
(b)vI = +3V
(c)vI = −1V
(d)vI = −3V
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