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A half-wave, controlled rectifier with a purely resistive load has delay α = π/3, Calculate form factor.
- a)1.5
- b)1.9
- c)2.03
- d)4.2
Correct answer is option 'B'. Can you explain this answer?
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A half-wave, controlled rectifier with a purely resistive load has del...
Concept-
If a gate signal is applied to the SCR at ωt = α, where α is the delay (firing or triggering) angle. The average (dc) voltage across the load resistor is
The rms voltage Across the Resistor is
FORM factor for Rectifier is given by
Given:
α = π/3
If a gate signal is applied to the SCR at ωt = α, where α is the delay (firing or triggering) angle. The average (dc) voltage across the load resistor is
The rms voltage Across the Resistor is
FORM factor for Rectifier is given by
Given:
α = π/3
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A half-wave, controlled rectifier with a purely resistive load has del...
A half-wave controlled rectifier with a purely resistive load has a delay in its output waveform due to the nature of its operation.
In a half-wave controlled rectifier, only half of the input AC signal is allowed to pass through, while the other half is blocked. This is achieved by using a diode as a rectifying element.
When the input AC signal is positive, the diode is forward biased and allows the current to flow through the load in the desired direction. However, when the input AC signal is negative, the diode becomes reverse biased and blocks the current flow.
This switching action of the diode causes a delay in the output waveform. When the input AC signal changes polarity from positive to negative, there is a brief period where the diode needs to switch from its conducting state to its non-conducting state. This switching delay results in a small gap or dead time in the output waveform.
The delay in the output waveform can be minimized by using fast-switching diodes and optimizing the control circuitry. However, there will always be some inherent delay due to the nature of the rectification process in a half-wave controlled rectifier.
In a half-wave controlled rectifier, only half of the input AC signal is allowed to pass through, while the other half is blocked. This is achieved by using a diode as a rectifying element.
When the input AC signal is positive, the diode is forward biased and allows the current to flow through the load in the desired direction. However, when the input AC signal is negative, the diode becomes reverse biased and blocks the current flow.
This switching action of the diode causes a delay in the output waveform. When the input AC signal changes polarity from positive to negative, there is a brief period where the diode needs to switch from its conducting state to its non-conducting state. This switching delay results in a small gap or dead time in the output waveform.
The delay in the output waveform can be minimized by using fast-switching diodes and optimizing the control circuitry. However, there will always be some inherent delay due to the nature of the rectification process in a half-wave controlled rectifier.
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A half-wave, controlled rectifier with a purely resistive load has delayα = π/3, Calculate form factor.a)1.5b)1.9c)2.03d)4.2Correct answer is option 'B'. Can you explain this answer?
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