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A certain n-p-n transistor has the commo...

A certain n-p-n transistor has the common emitter output characteristics as shown in the figure.
(a) Find the emitter current at `V_(CE)=12.5 V and I_(b)=60 muA, and `
(b) Current gain `'beta'` at this point.

Text Solution

Verified by Experts

(a) `I_(b)=60muA`
`I_(C)=60 mA`
`"when "V_(CE)=12.5 V`
`I_(e)=I_(b)+I_(C)`
`=60 muA+60 mA=60 muA+6000muA`
`=6060 muA=6.06 mA`
(b) Current gain `(beta)` ltbvrgt `beta=(I_(C))/(I_(b))=(6000)/(60)=100`
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