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1.3k views
in Electronics by (53.2k points)

The gain of an amplifier is 50 and its output resistance is 2.5kΩ. A negative feedback is applied so that output impedance reduces to 500Ω. What is the value of β? It bandwidth before feedback is 200 kHz, what is the new bandwidth.

1 Answer

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by (52.3k points)
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Best answer

A = 50

BWf = (1 + Aβ).BW

= [1 + 50 x 0.08]200kHz

= 5 x 200 kHz

= 1000 kHz

= 1 MHz

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