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  4. In CB configuration of transistor ac current gain is (Δ i C /Δ i E )=0.98, determine current gain of CE configuration :-

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Q. In CB configuration of transistor ac current gain is $\frac{\Delta i _{ C }}{\Delta i _{ E }}=0.98$, determine current gain of $CE$ configuration :-

Semiconductor Electronics: Materials Devices and Simple Circuits

Solution:

For $CB , \alpha=0.98$
For $CE, \beta=\frac{\alpha}{1-\alpha}=49$