When
the positive half-cycle of signal is provided
(1)
As the base of
transistor is already positive relating to biasing, so voltage (VBC) increases.
(2)
Due to increase in VBE , the forward bias of Emitter-base junction also
increases.
(3)
IB is also slightly increased.
(4)
As a result of increase
in IB (Base Current), the IC (Collector Current) increase up to B times as
(IC = BIB).
(5)
Due to increase of IB , a large increase in ICRC drop
occurs.
(6)
VCE decreases according to following equation.
VCE
=
VCCICRC
Thus, negative half-cycle of
input is achieved. It means that when positive input signal is provided to such
circuit, then the amplified output signal is negative, (as shown in figure)
When negative half-cycle is
provided to input then the achieved output cycle is positive.
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