PJ5000U-K
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User Manual
Rev. 3.0 - 21/03/18
7.1 PS Section
The figures below provide a schematic view of PS section of
PJ5000U-K
(figure
7.2) modules and connections.
PFC
PSL
PFC
PSL
PFC
PSL
Interface Card
+50V
Panel Card
Bias
Service PS
&
Blower
AUX PS
AUX PS
AUX PS
figure 7.2
7.1.1 PFC Unit
The three PFC units are rectifiers that modulates the absorbed current so that the
wave shape is the most possible sinusoidal, obtaining a power factor with a cos φ
of 0.998 and can work with input supply voltages from 186 to 250 V..
The PFC units are mounted on a plate fixed to the central heat sink, in order to
allow an easy replacement in case of failures.
7.1.2 Power Supplies
The three power supplies are located in the high part of the amplifier connected
in series to PFC units and deliver at the output an adjustable voltage from 20-50
VDC connected in parallel by a bus sharing system.
The power supplies are mounted on a plate fixed to the central heat sink, in order
to allow an easy replacement in case of failures.
