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Two amplifiers are connected one after t...

Two amplifiers are connected one after the other in series ( cascaded) . The first amplifier has a voltage gain of 10 and the second has a voltage gain of 20. If the input signal is 0.01 volt, calculate the output ac signal.

Text Solution

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Given, voltage gain of first Amplifier, `A_(V_(1))= 10`
Voltage gain of second Amplifier, `A_(V_(2)) = 20`
Input voltage `V_(i) = 0.01 V `
Total voltage gain `A_(v) = ( V_(0))/(V_(i)) = A_(V_(1))xx A_(V_(2))`
`(V_(0))/(0.01) = 10 xx 20 , V_(0)= 2V `.
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