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A step-up chopper is fed with 200 V. The conduction time of the thyristor is 200 µs and the required output is 600 V. If the frequency of operation is kept constant and the pulse width is halved, what will be the new output voltage?
  • a)
    600 volts
  • b)
    300 volts
  • c)
    400 volts
  • d)
    200 volts
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
A step-up chopper is fed with 200 V. The conduction time of the thyris...
Formula:

Where, Vo is the output voltage
Vin is the input voltage
TON is the pulse width
Application:
Given,
Vin = 200 volts
TON = 200 µs
V0 = 600 V
From equation (1),
or, 3T - 600 = T
Hence, T = 300 µs
If the Pulse width is half then, the new value of pulse width (TON') will be,

Hence,
Hence, the new value of output voltage (V0') will be,
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Community Answer
A step-up chopper is fed with 200 V. The conduction time of the thyris...
Formula:

Where, Vo is the output voltage
Vin is the input voltage
TON is the pulse width
Application:
Given,
Vin = 200 volts
TON = 200 µs
V0 = 600 V
From equation (1),
or, 3T - 600 = T
Hence, T = 300 µs
If the Pulse width is half then, the new value of pulse width (TON') will be,

Hence,
Hence, the new value of output voltage (V0') will be,
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A step-up chopper is fed with 200 V. The conduction time of the thyristor is 200 µs and the required output is 600 V. If the frequency of operation is kept constant and the pulse width is halved, what will be the new output voltage?a)600 voltsb)300 voltsc)400 voltsd)200 voltsCorrect answer is option 'B'. Can you explain this answer?
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