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A Bipolar Junction Transistor saturation point may be defined as
  • a)
    The point where the collector current exceeds maximum value
  • b)
    Large base current is present 
  • c)
    Point above which the increase in base current does not increase the collector current significantly 
  • d)
    None of the other options
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A Bipolar Junction Transistor saturation point may be defined asa)The ...
For a BJT operating in active mode, the base current (Ib) and collector current (IC) are related as Ic = β Ib where β is the current gain.
At saturation the voltage across collector – emitter junction (VCE) is constant (∼ 0.2V) and collector current is independent of base current.
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Most Upvoted Answer
A Bipolar Junction Transistor saturation point may be defined asa)The ...

Definition of Saturation Point:
The saturation point of a Bipolar Junction Transistor (BJT) is the point at which the transistor is fully turned on and the increase in base current does not result in a significant increase in collector current.

Explanation:
When a BJT is in saturation, it is operating in its maximum current state, and any further increase in base current will not lead to a proportional increase in collector current. This is because the transistor is already fully conducting, and it cannot conduct any more current than it currently is.

At the saturation point:
- The transistor is fully on, allowing maximum current to flow from collector to emitter.
- The base-emitter junction is forward biased, and the base-collector junction is reverse biased.
- The transistor acts like a closed switch, with low resistance between collector and emitter.

Significance of Saturation Point:
Understanding the saturation point of a BJT is crucial in circuit design to ensure that the transistor is operating within its specified limits. Operating a transistor beyond its saturation point can lead to overheating, distortion, and potentially damaging the device.

In conclusion, the saturation point of a Bipolar Junction Transistor is the point at which the transistor is fully turned on and any further increase in base current does not result in a significant increase in collector current. This point is important to consider in circuit design to prevent overloading the transistor and ensure proper functionality.
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