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The switching of power with a NPN transistor is called_________(a) sourcing current(b) sinking current(c) forward sourcing(d) reverse sinkingThe question was asked during an interview.I want to ask this question from Transistor as a Switch in portion Transistor Characteristics of Electronic Devices & Circuits

Answer» RIGHT choice is (b) sinking current

Best explanation: SOMETIMES DC current gain of a bipolar TRANSISTOR is too low to directly SWITCH the load current or voltage, so multiple SWITCHING transistors is used. The load is connected to supply and the transistor switches the power to it.


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