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Power Supply Regulation Modes
The power supply has 3 regulation modes while in the Normal Operation State:
•
•
•
The CV, CC, and CP annunciators indicate the regulation mode.
Constant
In this mode, the supply's output voltage is constant while the current and power
vary with the load. The power supply will operate in constant voltage mode
Voltage (CV)
whenever the load current I
(I
voltage at the selected value (V
requirements.
Constant
In this mode, the supply's output current is constant while the voltage and power
vary with the load. The power supply will operate in constant current mode
Current (CC)
whenever the load resistance is low enough that the load current I
current limit setting I
maintains the output current at the selected value (I
varies with the load requirements.
Constant
In this mode, the supply's output power is constant while the voltage and current
Power (CP)
vary with the load resistance. The power supply will operate in Constant Power
mode when the power drawn by the load is equal to the power setpoint and the
product of the voltage and current setpoint (V
limit point (P
power at the selected value (P
varies with the load requirements. The power limit is normally set to the maximum
supply rating, so the Constant Voltage or Constant Current modes will always be in
effect without entering into the Constant Power mode of operation.
Automatic
This feature allows the power supply to automatically switch operating modes in
response to changing load requirements. If, for example, the power supply was
Mode
operating in Constant Voltage (CV) Mode (I
Crossover
load current (I
supply would automatically switch into Constant Current (CC) Mode and the output
voltage would vary in response to changes in load current. If the additional load was
subsequently removed so the load current was again LESS THAN the current limit
setting, the supply would automatically return to Constant Voltage (CV) Mode.
Release 3.0
Constant Voltage (CV)
Constant Current (CC)
Constant Power (CP)
=V
/R
). In constant voltage mode, the power supply maintains the output
L
SET
L
SET
). In Constant Power mode, the power supply maintains the output
SET
) became EQUAL TO the current limit setting (I
L
is less than the current limit setting I
L
) while the load current I
SET
. (V
=I
R
). In constant current mode, the power supply
L
SET
L
) while the load voltage V
SET
L
Power Supply Regulation Modes
varies with the load
L
) while the load voltage V
SET
and I
) is greater than the power
SET
SET
and load current I
L
< I
), and the load changed so the
SET
SET
Operation
, or: I
<I
.
SET
L
SET
is equal to the
L
L
L
), the power
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