4.67 Consider the half-wave rectifier circuit of Fig. 4.23(a) with the diode reversed. Let v S be a sinusoid with 10-V peak amplitude, and let R = 1 k . Use the constant-voltage-drop diode model with V D = 0.7 V. (a) Sketch the transfer characteristic. (b) Sketch the waveform of v O . (c) Find the average value of v O . (d) Find the peak current in the diode. (e) Find the PIV of the diode.