Reverse bias is used to connect the collector-base region. As a result, only a few holes combine with electrons, and the rest of the holes are moved to the collector space charge layer. The transistor’s base is thin and does not have much doping. These electrons combined with the electrons when they moved into the N-type semiconductor material or base. The emitter current is made up of these holes. The junction between the collector and the base is referred to as a collector-base diode or a collector diode.īecause the emitter and base junctions are forward biased, the emitter pushes the holes in the base region. Emitter-base diode or emitter diode is the name for the junction between the emitter and the base. The transistor is equivalent to two diodes because it has two PN-junctions. When it comes to collecting, the collector is always biased in the opposite direction.
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