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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
Ampliers: Basic BJT Congurations
411
So, it has been conveniently separated into two terms
Avv
/
vBJT
cb
=
and
vv/.
vi
bs
,
α=
The term A
vBJT
can be considered the voltage gain owing to the BJT
itself, because of the ratio of its output and input voltages. The term
α
vi
,
will
reduce the overall voltage gain A
v
because it takes into account the voltage divider
effect owing to the input loop, as we will see, so this term furnishes an attenua-
tion effect.
A
vBJT
AA
v
v
vBJT
vBJT
c
b
def
The base and collector voltages can be written as
vv vv Ri vR
ii
bbeebe Ee be Eb c
=+=+ =+ +
()
11
vv vv Ri vR
ii
cceece Ee ce Eb c
=+=+ =+ +
()
11
and from Equation II C.E.
v
h
ihi
ce
oe
cf
eb
=−
() ...
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Publisher Resources

ISBN: 9781466582026