
Principles of Analog Electronics
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14.2 DC ANALYSIS
The study of multistage ampliers will take into account linear conditions, and
assume a small-signal regime, as already seen for single-stage ampliers. The
superposition theorem can then be applied, so that DC and AC analysis can be
performed separately. In this view, the same arbitrary multistage amplier can be
analyzed with two different models, valid for DC and AC conditions, respectively.
The DC analysis must take into account that, basically, the coupling methods
can be divided into two main groups, depending on the fact that the bias net-
work can be considered separately or not fo