Problem 4. Consider the half-wave rectifier circuit of Fig. 4. Let Vbe a sinusoid with 12-V peak amplitude, and let R = 1.5 k 2. Use the constant-voltage drop diode model with V₂ = 0.7V. (a). Sketch the transfer characteristics. Vo Vs (b). Sketch the waveform of Vo. (c). Find the average value of V. (d). Find the peak current in the diode. (e). Find the PIV of the diode. Vs R. IR Vo Fig. 4.