Enigmas, etc.

Input ImpedanceTakashi OhiraThe diode rectifier of this enigma series is shown in Figure 1. We now observe the input impedance

${R} + {jX}$

. Assuming the nominal dc load

${R}_{O} = {\pi}{\omega}{L}$

for half-wave rectification, estimate the reactance X. Which of the following is correct?enigmas01-3321553Figure 1. The half-wave rectifier of this enigma series, now focusing on the input impedance.(a)

${X} = {0}$

(b)

${X} = {\omega}{L}$

(c)

${X} = {2}{\omega}{L}$

(d)

${X}\,{\gt}\,{2}{\omega}{L}$

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