A common emitter circuit has an input resistance of `570 Omega` and output resistance of `59 k Omega`.If the current gain is 60, find the voltage gain andpower gain.

Explanation

`R_(i)= 570Omega`
`R_(o)= 59 k Omega= 59000Omega`
`beta= 60`
`A_(v)`= ?
Power gain = ?
`A_(v)= beta xx (R_(o))/(R_(i))`
`=60 xx (59000)/(570)= 6210.5 = 6.2105 xx 10^(3)`
Power gain `= A_(v) xx beta`
`=6.2015 xx 10^(3) xx 60= 372.63 xx 10^(3) = 3.7263 xx 10^(5)`