4.6. Regulation States

The ALx Series MagnaLOAD DC electronic load has four regulation states: Constant Voltage (CV), Constant Current (CC), Constant Power (CP), and Constant Resistance (CR). The active regulation state is indicated by a illuminated circular LED next to the respective voltage, current, power, or resistance set-point button. The active regulation state can also be monitored programmatically.

4.6.1. Constant Voltage (CV)

When the constant voltage regulation state is indicated, the MagnaLOAD electronic load is maintaining fixed voltage set-point, while the current flucuates with the driving DC source, as illustrated by Fig. 4.13.

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Fig. 4.13 Operating range in constant voltage mode

4.6.2. Constant Current (CC)

When the constant current regulation state is indicated, the MagnaLOAD electronic load is maintaining a fixed current set-point, while the voltage fluctuates with the driving DC source, as illustrated by Fig. 4.14.

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Fig. 4.14 Operating range in constant currnet mode

4.6.3. Constant Power (CP)

When the constant power regulation state is indicated, the MagnaLOAD electronic load is maintaining a fixed power set-point by varying the current level inversely in response to a change in input voltage, as illustrated by Fig. 4.15.

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Fig. 4.15 Operating range in constant power mode

4.6.4. Constant Resistance (CR)

When the constant resistance regulation state is indicated, the MagnaLOAD electronic load is maintaining a fixed resistance set-point, by sinking input current linearly proportional the input voltage, as illustrated by Fig. 4.16.

Note

The constant resistance regulation state will only be indicated when the MagnaLOAD electronic load is configured for Resistance Mode.

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Fig. 4.16 Operating range in constant resistance mode