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In a thyristor
  • a)
    Latching current is associated with turn – off process and holding current with turn – on process.
  • b)
    Latching current and holding current both are associated with turn – on process
  • c)
    Holding current is associated with turn – off process and latching current with turn – on process.
  • d)
    Latching current and holding current both are associated with turn – off process.
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
In a thyristora)Latching current is associated with turn – off p...
Latching current is the minimum value of anode current which it must attain during turn – ON process to maintain conduction when gate signal is removed.
Holding current is the minimum value of anode current below which it must fall for turning – OFF the thyristor.
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In a thyristora)Latching current is associated with turn – off p...
On and turn off of the thyristor.

When a positive voltage is applied to the gate of the thyristor, it turns on and starts conducting current. This is called the turn-on process. Once the thyristor is turned on, it continues to conduct current even if the gate voltage is removed. This is due to the latching current.

The latching current is the minimum current required to keep the thyristor in the conducting state after it has been turned on. It is typically higher than the gate trigger current, which is the minimum current required to turn on the thyristor initially.

To turn off the thyristor, the current flowing through it must be reduced below a certain threshold called the holding current. If the current falls below the holding current, the thyristor will turn off and stop conducting.

In summary, the latching current is associated with both the turn-on and turn-off processes of the thyristor. It is the minimum current required to keep the thyristor conducting after it has been turned on.
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In a thyristora)Latching current is associated with turn – off process and holding current with turn – on process.b)Latching current and holding current both are associated with turn – on processc)Holding current is associated with turn – off process and latching current with turn – on process.d)Latching current and holding current both are associated with turn – off process.Correct answer is option 'C'. Can you explain this answer?
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