2-6 Before Using the Unit PAS SERIES
output voltage further, the unit needs to be replaced by a model hav-
ing larger current capacity. Particularly for loads into which a tran-
sient peak current flows, the current must be set such that its peak
does not reach (or exceed) the current limit. If the unit enters constant
current operation mode even when the current is set to the rated out-
put current, the current capacity needs to be raised.
Next, we consider a case in which a load resistance of 25 Ω is used. In
this case, if the output current limit is set to 4 A or more, the power
supply can output voltages from 0 V to the rated maximum output
voltage in the constant voltage operation mode. The output voltage
limit is set to the rated maximum output voltage under this load con-
dition, and the output current is gradually increased from 0 A. At this
point, the power supply is operating in the constant current (CC)
mode. The output voltage increases as the output current increases.
When the output voltage reaches 100 V, the output current no longer
increases even if you attempt to raise it. If you wish to increase the
current flow further in this condition, the unit needs to be replaced by
a model having higher output voltage. Particularly for loads that gen-
erate transient surge voltage, the voltage must be set so that the surge
voltage does not reach (or exceed) the voltage limit.
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