OVERVIEW
15
Auxiliary Rectifier
The auxiliary rectifiers D120~ D123 provide bias
voltage filtered by the capacitors C120 and C121,
for the pre-regulators U150 and U151. They
provide a regulated voltage for other modules.
Main Rectifier
The main rectifier is a full wave bridge rectifier. It
provides the power after the rectifier is filtered by
the capacitor C101, and then regulated via a
series-wound regulator, which is finally delivered
to the output terminal.
Current Limiter
U151 is a comparator amplifier which compares
the reference voltage to the feedback voltage, and
then delivers it to Q151, which then calibrates the
output voltage.
Overvoltage
U131 is a comparator which activates when the
unit is overloaded and it controls the output of
U132 to turn off the output and inform the user.
