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Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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
Transcribed Image Text:(b) The frequency response of Figure Q.2(a) at low-frequency is sketched in Figure
Q.2(b). Given that ẞ = 100, VBE = 0.7 V, VT = 26 mV, ro = oo, gm = 42.69 ms and
T= 2.34 k
fLCE fLC2
fLCI
10 Hz 20 Hz 100 Hz
Figure Q.2(b) Frequency response
(i) Draw ac equivalent circuit at low-frequency.
(ii) Determine the capacitor value for the dominant low cut-off frequency.
==
(iii) Given that Av=-60, Cwo = 8 pF, Cwi = 6 pF, Cce = 0.1 pF, Cbe =Cx = 100 pF,
Cbc Cu=3pF, determine the high cut-off frequency at fнo and fнi.
=
(iv) Calculate gain in dB and sketch the high-frequency response
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