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6.1.2 Noise filter
The noise filter comprises coils and capacitors, and cuts noise generated at
the input section (line noise, etc.) and prevents switching noise from escap-
ing to the power supply line.
Input (power
supply line side)
6.1.3 Rectifying circuit
The
AC
input signal is full-wave rectified by a diode bridge to convert the
AC input to DC. The rectified voltage is made to have a shape like that of a
mountain range, and is different from the constant voltage that is output
from batteries. This kind of voltage is called a pulse wave.
AC input waveform
Fig. 6-27 Noise Filter
AC input
DC output
Diode bridge
Fig. 6-28 Rectifier circuit
FACSIMILE SYSTEM
Output
DC output waveform
Full-wave
rectification
6–27
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