Discuss the biasing polarities in an NPN and PNP transistors.

Explanation

(i) In NPN transistor , a positive voltage is given to the collector terminal to produce a cut tent flow the collector to the emitter.
(ii) In a PNP transistor a positive voltage is given to the emitter terminal to produce current flow from the emitter to collector.
(iii) To operate the transistor in the active region , emitter base must be forward biased and collector base must be reverse biased .