77
Switching Power Supply S82K
INPUT
+V
–V
INPUT
+V
–V
J GENERATING OUTPUT VOLTAGE (r)
An output of r can be generated by using two Power
Supplies (as shown below) because the Power Supply
produces a floating output.
When connecting the Power Supplies in series with an
operation amplifier, connect diodes to the output terminals as
shown by the dotted lines in the figure. No diodes are
required with S82K 90-/100-/240-W models.
J WIRING
To prevent incorrect wiring of the input/output terminals, pay
attention to their polarities.
J BATTERY CHARGING
With S82K-j09024/-j10024/-24024T models, a reduction in
lifetime due to over discharge of the battery can be prevented
using the DC LOW output. (Discharge can be interrupted at 0.75
to 0.9 u 24 V.)
J SERIES OPERATION
S82K 90-W/100-W/240-W models can be operated in series.
It must be noted that the + output of the 7.5-W dual output model
cannot be connected in series to its – output.
90-W/100-W/240-W Models
3-, 7.5-, 15-, 30-, 50-W Models
INPUT
+V
–V
INPUT
+V
–V
INPUT
+V
–V
INPUT
+V
–V
J PARALLEL OPERATION
S82K 100-W/240-W models can be operated in parallel.
Perform parallel operation with power supplies satisfying the
same specifications.
INPUT
+V
–V
INPUT
+V
–V
100-W and 240-W Models
Load
Note: When operating the
S82K-P10024 or 240-W model
in parallel operation, set the
switch to “PARALLEL.”
Refer to the derating curve for
the rated current under this
operation.
INPUT
+V
–V
INPUT
+V
–V
Load
3-, 7.5-, 15-, 30-, 50- and 90-W Models
J PARALLEL OPERATION PRECAUTIONS
x The length and thickness of each wire connected to the
load must be the same so there is no difference in voltage
drop value between the load and the output terminals of
each Power Supply.
x Adjust the output voltage of each Power Supply so there
will be no difference in output voltage between each Power
Supply.
x If the S82K-P10024 or 240-W Power Supply is used in
single operation under the parallel operation setting, the
overcurrent protection will be actuated at an output of 90%
to 95% (in current) and will not allow a 100% output.
x If the S82K-P10024 or 240-W Power Supplies are used in
parallel operation under the single operation setting, one of
them will operate at 110% output, causing severe heat der-
ating and shortening the service life.
