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20 A feedback amplifier with a compensation cacacitor has a low-frequency loop gain of 100dB and three poles at fr1= 10Hz and fp2 = 5MHz, and fr3 = 10MHz. a) Find the frequency at which T = 1 b) If the frequency fr1 is due to a compensation capacitor CF=20pF, determine the dominant the new dominant pole fer and phase margin if the compensation capacitor is increased to CF = 75pF.

20 A feedback amplifier with a compensation cacacitor has a low-frequency loop gain of 100dB and three poles at fr1= 10Hz and fp2 = 5MHz, and fr3 = 10MHz. a) Find the frequency at which T = 1 b) If the frequency fr1 is due to a compensation capacitor CF=20pF, determine the dominant the new dominant pole fer and phase margin if the compensation capacitor is increased to CF = 75pF.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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20 A feedback amplifier with a compensation cacacitor has a low-frequency loop gain of 100dB and three poles at fr1= 10Hz and fp2 = 5MHz, and fe3= 10MHz. a) Find the frequency at which T = 1 b) If the frequency fr1 is due to a compensation capacitor CF=20pF, determine the dominant the new dominant pole fer and phase margin if the compensation capacitor is increased to CF = 75pF.
Transcribed Image Text:20 A feedback amplifier with a compensation cacacitor has a low-frequency loop gain of 100dB and three poles at fr1= 10Hz and fp2 = 5MHz, and fe3= 10MHz. a) Find the frequency at which T = 1 b) If the frequency fr1 is due to a compensation capacitor CF=20pF, determine the dominant the new dominant pole fer and phase margin if the compensation capacitor is increased to CF = 75pF.
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