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Principles of Analog Electronics
book

Principles of Analog Electronics

by Giovanni Saggio
January 2014
Intermediate to advanced content levelIntermediate to advanced
567 pages
23h 13m
English
CRC Press
Content preview from Principles of Analog Electronics
Principles of Analog Electronics
446
ANSWER
I
BQ
40 μA, I
CQ
3.2 mA, V
CEQ
5.5 V.
EXERCISE 6
Determine the stability factors S
I
CBO
, S
V
BEQ
, S
β
of the amplier of the previous
exercise.
ANSWER
≅≅
−≅
µ
β
SS
A
V
SA
35,0.28, 17.3
IV
CBOBEQ
.
EXERCISE 7
Consider the collector-feedback bias amplier as already schematized in
F igure 11.63 .
Find the I
CQ
V
CEQ
pairs in quiescent conditions when V
CC
= 12 V, R
C
= 2 kΩ,
and R
F
= 47 kΩ, for the two occurrences β = 80 and β = 120.
ANSWERS
≅≅
β= β=
Im
AV V4.38
;3
.13
CQ CEQ
80 80
≅≅
β= β=
ImAV V
4.738
;2
.46
CQ CEQ
120 120
Observation
Higher β corresponds to higher I
CQ
but lower V
CEQ
, and thus a higher drop on R
C
.
EXERCISE 8
A four-resistor bia ...
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Publisher Resources

ISBN: 9781466582026