The overall gain of a -ve feedback amplifier is 100. If the gain of the amplifier device itself is 1000.
a) find the loop gain
b) calculate the feed back factor β
c) how much percentag error results if the overall gain is estimated from β alone
d) calculate the new overall gain if the gain of the amplifier device drops by 20%
e) compare the relative change of the overall gain (d) with the relative change of the device gain.