Electronic Circuit Analysis by Rao B. Visvesvara & Rajeswari K. Raja & Pantulu P. Chalam & Rama K. Bhaskara
Author:Rao, B. Visvesvara & Rajeswari, K. Raja & Pantulu, P. Chalam & Rama, K. Bhaskara
Language: eng
Format: epub
ISBN: XXXXXXXXXXXXX
Publisher: Pearson India
Published: 2011-08-17T16:00:00+00:00
EXAMPLE 7.5
An Amplifier has a voltage gain of 100, feedback ratio, if 0.01, find the voltage gain with feedback, the output voltage of the Feedback Amplifier for an input voltage of 1 mV, and feedback voltage. (BEDC I B.Tech. EEE May/June 2008, set-4)
Solution: Voltage gain A = 100, feedback ratio β = 0.01.
Gain of feedback amplifier
Output voltage of feedback amplifier Vout = AF·Vin = 5 × 1 mV = 5 mV
Feedback factor β = 0.01
Feedback voltage VF = β Vout = 0.01 × 5 × 10−3 = 0.05 mV.
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