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The technique used to quickly switch off a transistor is by_________

(a) reverse biasing its emitter to collector junction

(b) reverse biasing its base to collector junction

(c) reverse biasing its base to emitter  junction

(d) reverse biasing any junction

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The above asked question is from Transistor Switching Times topic in portion Transistor Characteristics of Electronic Devices & Circuits

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Right choice is (c) reverse biasing its base to emitter  junction

For explanation: The technique used to quickly switch off a transistor is by reverse biasing its base to collector junction. It is demonstrated in a high voltage switching circuit. The advantage of this circuit is that it is not necessary to have high voltage control signal.

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