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Using your Programmable Power Supply
5.6.1
Parallel connection of output channels
Note:
For the PM2812 and PM2813 you can face a number of restrictions
when connecting output channels in parallel to a load. Please read
Appendix D to get more information of parallel connection of output
channels fore these instruments.
For the PM2831 and PM2832, parallel connection of output channels is
only possible in the source (non-sink) mode
Connecting output channels in parallel provides a greater current capability than
can be obtained from a single output channel. In principle, you can put more than
two output channels in parallel.
Output channels in parallel configurations can operate in either Constant Voltage
(CV) or in Constant Current (CC).
When channels are connected in parallel with the intention of increasing the
current capability, it is advised that you set all channels to the same voltage. When
the channels have the same power characteristics, set them to the same current
value.
In general, you can handle the following procedure.
•
Set the power supply to STANDBY before making any connections.
•
Connect the channels in parallel.
If a constant voltage is required accross the load, proceed as follows.
•
Program the voltage setting of all channels equal to the constant voltage
required.
•
Calculate the maximum current needed for the load (I
minimum value of R
•
Program the current setting of the individual channels so that the sum of the
values is equal to I
•
Now you may set the power supply to the operate mode.
If a constant current is required through the load, proceed as follows.
•
Program the current setting of the individual channels so that the sum of the
values is equal to the value of the constant current required.
•
Calculate the maximum voltage needed to supply the constant current. Count
with the maximum value of R
•
Program the voltage setting of all channels equal to the maximum voltage
needed.
•
Now you may set the power supply to the operate mode.
.
load
.
max
.
load
). Count with the
max
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