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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
436
11.10 BIAS STABILITY
It is necessary that the quiescent Q-point, determined in DC conditions by the bias
network, be as stable as possible to guarantee that the BJT is always working in
the active region, regardless of the boundary conditions (for example, variations of
the parameters of the components caused by changes in temperature). If not, that
point could “move” from Q
1
to Q
2
for instance, as represented in Figure11.56, and
the output signal could be clipped.
The bias stability can be represented by the request to maintain a xed DC col-
lector current I
CQ
. However, this current can change quite rapidly ...
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Publisher Resources

ISBN: 9781466582026