Download Physics 536 - Assignment #4

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Physics 536 - Assignment #4
1. In the following, treat the diodes as idealized devices that allow current to flow in one
direction only, ignoring any voltage drop across them.
(a) Consider a transformer being driven by an AC voltage source with RMS amplitude V0 .
Calculate the peak amplitude of this voltage source and sketch its waveform.
(b) If the transformer in the circuit shown below has a turns ratio of n = N2 /N1 , sketch the
waveform of the voltage across the load RL , comparing it with the waveform in (a). Calculate the
RMS voltage, VL , across the load.
v(t)
N1
N2
RL
(c) The diodes in the circuit shown below are in a configuration referred to as a bridge rectifier.
Sketch the waveform of the voltage across the load, RL , and calculate the RMS voltage of this
waveform.
RL
v(t)
N1
N2
(d) Suppose the transformer has a center tap that is held at ground potential and is connected in
the configuration shown below. Sketch the waveform for the voltage across RL in this configuration
and calculate RMS voltage.
v(t)
N1
N2
RL
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