A class-A thyristor d.c. chopper shown in Fig.4.37 is operating at a frequency of 2 kHz from 96 V d.c. source to supply a resistive load of 8 2. The load time constant is 6 ms. If the mean load voltage is 57.6 V, find duty cycle (mark to space ratio), the mean load current, and the magnitude of the current ripple. Derive any formula used. is Fig.4.37 Va T DFW L R

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4.2
A class-A thyristor d.c. chopper shown in Fig.4.37 is operating at a
frequency of 2 kHz from 96 V d.c. source to supply a resistive load of
82. The load time constant is 6 ms. If the mean load voltage is 57.6 V,
find duty cycle (mark to space ratio), the mean load current, and the
magnitude of the current ripple. Derive any formula used.
is
Fig.4.37
T
Drwin
L
R
+
Transcribed Image Text:4.2 A class-A thyristor d.c. chopper shown in Fig.4.37 is operating at a frequency of 2 kHz from 96 V d.c. source to supply a resistive load of 82. The load time constant is 6 ms. If the mean load voltage is 57.6 V, find duty cycle (mark to space ratio), the mean load current, and the magnitude of the current ripple. Derive any formula used. is Fig.4.37 T Drwin L R +
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