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section 2.4
Q1: At what point on the input cycle does the PIV occur?

ANS: The PIV occurs at the peak of each half-cycle of the input voltage when the diode is reverse-biased. In this circuit, the PIV occurs at the peak of each negative half-cycle.

Q2: For a half-wave rectifier, there is current through the load for approximately what pentage of the input cycle?
ANS:

Q3:What is the average of a half-wave rectified voltage with a peak value of 10 V?
ANS:

VAVG=VP/ = 10V/ =3.18 V

Q4:What is the peak value of the output voltage of a half-wave rectifier with a peak sine wave input of 25 V?
ANS:
Vp(out)=Vp(in)-0.7V=25v - 0.7v = 24.3v

Q5:What PIV rating must a diode have to be used in a rectifier with a peak output voltage of 50 V?
ANS: the 60v PIV rating must a diode have to be used in a rectifier with a peak output voltage of 50 V?

section 2.5
Q1:How does a full-wave voltage differ from a half-wave voltage?
ANS:

A full -wave recitifier allows unidirectional (one-way) current through the load during the entire of the input cycle, whereas a half-wave rectifier allows current through the load only during one-half of the cycle. The result of full-wave rectification is an output voltage with a frequency twice the input frequency and that pulsates every half-cycle of the input.

Q2:What is the average value of a full-wave rectified voltage with a peak value of 60 V?
ANS:

VAVG = 2Vp/= 2(60 V)/ = 38.21V

Q3:Which type of full-wave rectifier has the greater output voltage for the same input voltage and transformer turns ratio?
ANS:
A step-up transformer with a turns ratio of n=2 must be used. In any case, the output voltage of a center-tapped full-wave rectifier is always one-half of the total secondary voltage less the diode drop, no matter what the turns ratio. Vout=Vsec/2 - 0.7V...

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