GW Instek PSU-Series User Manual - Manual (Page 29)

GETTING STARTED
29
Considerations
The following situations should be taken into consideration when
using the power supply.
Inrush current When the power supply switch is first turned
on, an inrush current is generated. Ensure there
is enough power available for the power
supply when first turned on, especially if a
number of units are turned on at the same
time.
Pulsed or Peaked
loads When the load has current peaks or is pulsed, it
is possible for the maximum current to exceed
the mean current value. The PSU power supply
ammeter only indicates mean current values,
which means for pulsed current loads, the
actual current can exceed the indicated value.
For pulsed loads, the current limit must be
increased, or a power supply with a greater
capacity must be chosen. As shown below, a
pulsed load may exceed the current limit and
the indicated current on the power supply
ammeter.
Current limit
level
Measured
Ammeter
current