DIFFERENT OPERATING MODES AND BIASING OF TRANSISTOR
OPERATING MODES OF TRANSISTOR Commonly a Transistor has two junctions (Emitter-Base and Collector-Base Junctions), and each of these two junctions may be either Forward Biased or Reverse Biased . Therefore, there are Four Possible configurations can be made to bias these Junctions . Accordingly transistor may operate in different conditions. It is easy to understand the various configurations of Transistors and the region of operation by take a look on the Tubular Column. sl.no. Biasing Condition Emitter Base Junction Collector Base Junction Operation Region 1 Forward-Reverse Forward Biased Reverse Biased Active 2 Forward-Forward Forward Biased Forward Biased Saturation 3 Reverse-Reverse Reverse Biased Reverse Biased Cut-off 4 Reverse-Forward Reverse Biased Forward Biased Inverted 1. Forward-Reverse Biasing It is the normal biasing of a transistor in which the EMITTER-BASE Junction is Forward Biased and the COLLECTOR-BASE Junction is Reverse Biased. This ...