Question

The voltage gain without negative feedback is 40 dB. Determine the new voltage gain if

3% negative feedback is introduced.​

Answer 1

Answer:

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Answer 2

Given:

Av = 40dB

β = 3%

To find:

Determine the new voltage gain if  3% negative feedback is introduced.​

Solution:

β = 3% = 3 / 100 = 0.03

Formula used:

Avf = Av / (1 + βAv)

Avf = 40 / (1 + 0.03 × 40)

Avf = 40 / (1 + 1.2)

Avf = 40 / 2.2

Avf = 18.182

Therefore, the new voltage gain if  3% negative feedback is introduced is 18.182