GW Instek PEL-3000 Series User Manual User Manual

Page 191

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APPENDIX

189

CP Mode

Load Current

Load Input

Voltage

CP Value

CP+CV Mode

When CP+CV mode is enabled, the unit will act
as a constant power load after the input voltage
is greater than the user-defined CV level. At the
CV level, the unit works as a constant voltage
load. This mode effectively creates a voltage
ceiling before the unit operates in CP mode.
The diagram below illustrates this.

CP+CV Mode

Load Current

Load Input

Voltage

CP Value

CV level

Note that when the source voltage is less than
the CV level, no current will flow due to a very
high impedance.