Why is base-emitter junction always forward biased?
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Why is base-emitter junction always forward biased?
Forward bias on the emitter to base junction causes the electrons to flow from N type emitter towards the bias. This condition formulates the emitter current (IE). While crossing the P-type material, electrons tend to combine with holes, generally very few, and constitute the base current (IB).
When the base-emitter junction is forward biased in a transistor then transistor has?
For a transistor to function, the two PN junctions must be properly biased. The base-emitter junction behaves like any other PN junction when viewed alone. If the base-emitter junction is forward biased, the transistor is on. If it is reverse biased, the transistor is off.
Is emitter base junction is in forward bias and base collector junction is in forward bias then transistor is in?
In the active mode of transistor operation, the base-emitter junction is forward biased and the base-collector junction is reverse biased.
How is the emitter base junction in the transistor biased?
In base emitter transistors the current is flowing forward biased, whereas, in collector and emitter transistors the current is passing in reverse biased. Thus, the emitter-base junction is forward biased and collector-base junction is reverse biased. The correct answer is option D.
Does the emitter to base junction have forward or reverse bias?
In typical operation, the base–emitter junction is forward biased, which means that the p-doped side of the junction is at a more positive potential than the n-doped side, and the base–collector junction is reverse-biased.
When emitter-base junction is in forward bias and collector base junction is in reverse bias the BJT used as?
| Mode | Emitter Junction diode | Collector Junction diode |
|---|---|---|
| Saturation | Forward bias | Forward bias |
| Cut-off | Reverse bias | Reverse bias |
| Active | Forward bias | Reverse bias |
| Reverse Active | Reverse | Forward bias |