• A practical circuit using Class
B elements is the complementary pair or
"push–pull"
arrangement. Here, complementary or quasi-complementary
devices are used to each amplify
the opposite halves of the input signal,
which is then recombined at the
output. This arrangement gives excellent
efficiency, but can suffer from
the drawback that there is a small mismatch
at the "joins" between
the two halves of the signal..
• Class AB sacrifices some
efficiency over class B in favor of linearity, so will
always be less efficient (below
78.5%). It is typically much more efficient
than class A.
0 comments:
Post a Comment