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When a transistor is used as switch

When a transistor is used as switch Correct Answer It is driven between saturation and cut-off

  • When a transistor works as a switch it works in cut-off and saturation regions.
  • In the cut-off state, both emitter-base junction and the collector-base junctions are reverse biased.
  • But in the saturation region, both the junctions are forward biased.

       

This is explained with the help of the following circuit diagram:

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