15.23 For the circuit in Fig. 15.10, let V+ = −V− = V, R4 = R1, and R3 = R2. Assume that a conducting diode has a voltage drop VD and that at the onset of conduction the diode current can be neglected relative to the current through R1, R2, R3, and R4. Show that the peak amplitude of vO is given by For V = 5V, VD = 0.7 V, find R3/R4 to obtain
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