12/30/2023 0 Comments Transistor active region![]() The below circuits explain and illustrate the operations of the cut OFF regions or fully OFF regions for both the NPN bipolar junction transistor (BJT) and PNP bipolar junction transistor (BJT). This is because the PN-Junction, from the base (B) to the collector is in reverse direction, at this state the transistor is “fully OFF.” Note that PNP emitter terminal is always connected to the positive potential difference while its collector to the ground or 0v. By connecting the base (B) to the emitter (E) that is to say the base (B) is lower than the collector (C) current will not flow from the emitter (E) to the collector (C). Both the configurations are in reverse modes. In NPN layers P-dope is the common junction while in PNP layers N-dope is the common junction. When we study the below circuits, two PN-junction diodes are configure to form two types of layers. In this mode, the transistor is in OFF mode. In Bipolar Junction Transistor (BJT) cut off region or fully off region, the transistor is bias in such a way that both junctions are reverse so that no current will pass from the emitter (E) to the collector (C). ![]() ![]() This article is centre at Bipolar Junction Transistor (BJT) cutoff region or FULLY OFF region. ![]()
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