Page 31 - PHU_User Manual_EN_Rev A
P. 31
GETTING STARTED
Slew Rate
Theory The PHU has selectable slew rates for CC and CV
mode. This gives the PHU power supply the ability
to limit the current/voltage draw of the power
supply. Slew rate settings are divided into High
Speed Priority and Slew Rate Priority. High speed
priority mode will use the fastest slew rate for the
instrument. Slew Rate Priority mode allows for
user adjustable slew rates for CC or CV mode. The
rising and falling slew rate can be set
independently.
High Speed
Priority
mode Slew rate =
Enabled
Bleeder Control
Background The PHU DC power supplies employ a bleed
resistor in parallel with the output terminals.
Bleed
PHU Load
resistor
Bleed resistors are designed to dissipate the power
from the power supply filter capacitors when
power is turned off and the load is disconnected.
Without a bleed resistor, power may remain
charged on the filter capacitors for some time and
be potentially hazardous.
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