A transistor, connected in common-emitter configuration, has input resistance `R_in = 3k Omega` and load resistance of `6k Omega `.If `beta = 40` and an input signal of 20m V is applied, calculate the voltage gain, output voltage and power gain.

Explanation

`R_("in")= 3k Omega= 3000Omega`
`R_(L)=6k Omega= 6000Omega`
`beta= 40`
`V_(i)= 20mV`
`V_(o)`= ?
Power gain = ?
Voltage gain `=A_(v)= beta xx (R_(L))/(R_(i))`
`A_(v)= 40 xx (6000)/(3000)= 80`
`A_(v)= (V_(0))/(V_(i))`
`V_(0)= A_(v) xx V_(i) = 80 xx 20 mV= 1.6V`
Power gain `=A_(v) xx beta`
`80 xx 40 = 3200`