3000 Series
9
3.3 Constant Voltage/Constant Current Characteristics
This power supply operates automatically between constant voltage (C. V. mode) and constant current
(C. C. mode) by responding quickly to rapid load changes. The following figures shows the relative
changes between the constant current and the constant voltage modes.
Constant Voltage
Constant
Current
Output
Voltage
Crossover Point
Output Current
Figure 3 Constant Voltage vs. Constant Current Relation Diagram
3.4 Operation Modes
3.4.1 Serial
Serial connection allows the connection of two or more power supplies serially to obtain a higher
voltage rating (maximum 240V for this power supply).
For serial connection, it is recommended that all power supplies operate under the constant voltage
(C.V.) mode.
Figure 4 shows the serial connection between two 3303D power supplies. One unit is set at 30V/2A
and the other at 20V/3A. Figure 5 shows the serial connection voltage/current output versus load
changes.
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