A 3 stage amplifier has first stage voltage gain 50 second stage voltage gain 75 thrid stage voltage gain is 100.find total gain in db?
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Answer:
111.48dB...
Explanation:
A1=50
A2=75
A3=100
A Total=A1*A2*A3
=== 50*75*100
=== 375000
Gain In dB =20 logA
=20 log(375*10^3)
=== 20 (3+log(375))
log(375)=2.574
===20(3+2.574)
== 20(5.574)
=== 111.48 dB...
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