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.
When the power supply connects to a capacitive
load, e.g., capacitor, the load is being charged
consecutively and the larger the voltage change, the
more the current grow. Also, the overshoot will be
possibly generated within the currents output,
therefore leading to output turned off thanks to
overcurrent protection from the power supply.
It is suggested to lower down the set voltage output
from power supply so that the voltage of capacitive
load decreases per certain unit time. In addition, a
block diode is necessary to keep current from
flowing back to the output terminal of power
supply. Refer to the figure below where a block
diode connects with the capacitive load in series to
efficiently prevent current from flowing back to the
power supply.
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