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For a BJT , the common- base current ga...

For a BJT , the common- base current gain `alpha=0.98` and the collector base junction reverse bias saturation `I_(CO) = 0.6muA` . This BJT is connected in the commone emitter mode and operated in the active region with a base drive current `I_(B) =20muA` . The collector current `I_(C)` for this of operating is .

Text Solution

Verified by Experts

`alpha=0.98`
`I_(Cu)=0.6muA`
`alpha=(beta)/(1+beta)`
(or)
`0.98=(1)/(1/beta+1)`
`beta=49`
`I_("CEO")=(1+beta)I_("CBO")`
`=(1+49)xx0.6muA`
`I_("CEO")=30muA`
`I_(C)= betaI_(B)+I_("CEO")`
`=49xx20muA +30muA =1010muA`
`I_(C)=1 .01mA`
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