6.2 Series operation
Two units can be seriesly connected to increase the output voltage or to create a bipolar voltage source. It is
recommended to connect diodes in parallel with each output to prevent reverse voltage in case of failure in one of
the power supplies. Each diode should be rated to at least the power supply rated output voltage and output current.
Refer to Fig 6-5 and 6-6 for typical lseries connection of power supplies.
Series connection for increased output voltage.
FPS1000
#1
SIG.
RTN
ON/
OFF
+S
+V
-V
-S
(*)
+S
+V
10
7
LOAD
FPS1000 #2
+S
+V
(*)
-V
SIG.
RTN
10
ON/
OFF
7
-V
-S
-S
(*) Diodes are user supplied
Fig 6-5: Series connection for increased output voltage
Series connection for positive and negative output voltage.
FPS1000
#1
+S
+V
(*)
SIG.
RTN
ON/
OFF
-V
-S
+V
LOAD
10
7
COMMON
FPS1000 #2
+S
+V
(*)
-V
SIG.
RTN
10
ON/
OFF
7
-V
-S
(*) Diodes are user supplied
Fig 6-6: Series connection for Bipolar output voltage
CAUTION
Series operation is not applicable for units with I 2 C bus option.
18
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