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Fig 6-6: Series connection for Bipolar output voltage
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.
Fig 6-5: Series connection for increased output voltage
(*) Diodes are user supplied
LOAD
FPS1000 #1
SIG.
RTN
ON/
OFF
FPS1000 #2
SIG.
RTN
ON/
OFF
+V
+S
-S
-V
+S
-S
+V
-V
+V
+S
-S
-V
(*)
(*)
710
710
LOAD
FPS1000 #1
SIG.
RTN
ON/
OFF
FPS1000 #2
SIG.
RTN
ON/
OFF
+V
+S
-S
-V
+V
-V
+V
+S
-S
-V
(*)
(*)
710
710
COMMON
(*) Diodes are user supplied
Series connection for positive and negative output voltage.
Series connection for increased output voltage.
CAUTION
Series operation is not applicable for units with I
2
C bus option.