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Question
The common-base DC current gain of a transistor is 0.967. If the emitter current is 10mA. What is the value of base current?
Solution
Given:
Current gain (α) = 0.967
Emitter current = 10mA
To Find:
The value of base current of the transistor =?
Solution:
- The common gain DC current us is given by
α = 0.967 = `"I"_"C"/"I"_"E"="I"_"C"/10`
IC = 0.967 × 10
IC = 9.67mA - The base current of the transistor is given by the formula
IE = IB + IC
10 = IB + 9.67
IB = 0.33mA
The value of base current of the transistor is 0.33mA
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