|
Clipping removes part of
the positive or negative
peaks of a signal or
both.
Silicon diodes do not
conduct until the
applied voltage exceeds
about 0.6 volts and only
when the anode is
positive with respect to
the cathode.
The circuit is like a
potential divider with
the diode part being
high resistance for
voltages below 0.6 volts
and low resistance
above.
Fig. 1 shows the
waveform into the
clipper.
Fig. 2 is the
output of a positive
clipper and fig. 3 the
output of a negative
clipper.
Fig. 4 has both
peaks clipped and is
often used as a LIMITER
where the output must
not exceed 1.2 volts.
|
