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  • Draw a circuit diagram of a common emitter amplifier using n-p-n transistor. Derive an expression for current gain .   <div styl

Draw a circuit diagram of a common emitter amplifier using n-p-n transistor. Derive an expression for current gain \beta _{ac}.

 

 

 

 
 
 
 
 

Answers (1)

(i)

(ii)

 A_{V}=\beta_{ac}\frac{R_{L}}{r}

    \therefore\beta_{ac}=A_{V}\frac{r}{R_{L}}

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Safeer PP

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