How is BJT used as a faster switch?(a) By operating it in the saturation and cut-off region(b) By operating it in the active and cut-off region(c) By using it in strong saturation(d) By decreasing its ON resistanceI got this question in an online quiz.Question is taken from Transistor Switching Network in division Transistor Biasing and Low Frequencies of Analog Circuits

How is BJT used as a faster switch?(a) By operating it in the saturati

1.	How is BJT used as a faster switch?(a) By operating it in the saturation and cut-off region(b) By operating it in the active and cut-off region(c) By using it in strong saturation(d) By decreasing its ON resistanceI got this question in an online quiz.Question is taken from Transistor Switching Network in division Transistor Biasing and Low Frequencies of Analog Circuits
Answer» Right choice is (b) By operating it in the active and cut-off region The EXPLANATION is: If BJT is to act as a SWITCH with negligible power dissipation, then BJT is operated in the cut-off and SATURATION region, as in the TTL family. When BJT has to be operated as a FAST switch, then it is operated in the active and cut-off region, as in the ECL family.

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