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A bipolar transistor is specified to have forward current gain in the range of 8 to 40. The load resistance is 11 Ω. The dc supply voltage VCC = 200 V and input voltage to the base circuit is 10 V. If VCESat = 1.0 V and VBESat = 1.5 V, what is the collector saturation current?

A bipolar transistor is specified to have forward current gain in the range of 8 to 40. The load resistance is 11 Ω. The dc supply voltage VCC = 200 V and input voltage to the base circuit is 10 V. If VCESat = 1.0 V and VBESat = 1.5 V, what is the collector saturation current? Correct Answer 18.09 A

Collector saturation current:

  • When the transistor is operating in saturation, the current through the transistor is the maximum possible value.
  • This current is called collector saturation current
  • It is independent of the DC current gain of the transistor.

 

Circuit diagram of BJT:

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Apply KVL in the outer loop

VCC = ICS RL + VCE (sat)

⇒ 200 = (ICS × 11) + 1

⇒ ICS = 18.09 A

Therefore, the collector saturation current is 18.09 A

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