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home > Products > Power Supply and Power Control Products > AC Power Source > DP series > Features
Product Information

AC Power Source
Programmable AC Power Source
DP series

Unique functions you expect from NF —
a company with unparalleled knowledge about AC power

Current limiter function

Output current limits can be set with peak value and RMS value. With peak value setting, both positive and negative current values can be set. It is possible to continue output current limitation after limit operation using a setting, or to turn output off after continuing the limited state for a set time. When evaluating a prototype, this is useful for protection in case there is an abnormal current due to abnormal operation of the load.
Positive/negative peak current value and RMS current value
*Limiter operation
Self-recovery (continuous) or output off
Possible to designate the time to continue the limited state until output off (1 s to 10 s, resolution 1 s)

* Protection function *

The DP Series has a built-in function for protecting the power supply itself if a problem occurs due to issues such as output overvoltage or overcurrent, power unit trouble, internal control problems in areas such as the operation panel or communication, a rise in ambient temperature, or a drop in AC line voltage. If a problem occurs, it is displayed on the panel and output is turned off. This is used together with the current limiter function for protection against overcurrent, and it is possible to select either self-recovery after elimination of the problem, or output off after a designated time.

* Set range limit function *

This prevents load malfunction due to mis-operation or other problems by limiting the setting range for the output voltage upper limit and the frequency upper and lower limits.

* Remote sensing / AGC / Auto Cal *

There are cases where a voltage drop occurs at the load end due to wiring. The DP Series is equipped with functions to always supply the set voltage.
*Remote Sensing
Switches the voltage detection point used for measurement and output voltage correction to either output terminal or sensing input terminal. Output is corrected by using this together with AGC and Auto Cal.
*AGC (Automatic Gain Control)
This function performs continuous correction to ensure a match between the RMS values of the detection point voltage and the output voltage setting. Correction is performed automatically to maintain the same value as the setting value, even if the load fluctuates.
*Autocal (Auto Calibration)
Each time Auto Cal is turned on, this function measures the detection point voltage and performs correction to ensure that the output voltage RMS value is equal to the voltage setting value.

* Other features *

*Memory functions
Save/load settings from nonvolatile memory.
Basic settings (30), sequences (5), simulation (5), arbitrary waveforms (16), Clipped sine waves (3)
* Figures in parentheses indicate the number of memories
*External signal input
  • SYNC: synchronizes the frequency of internal signal source with external signal
  • VCA: controls output voltage setting with DC signal
  • EXT* : amplifies external signal, used as power amplifier
  • ADD* : adds external signal source to internal signal source
* Not available at multi-phase systems nor the multi phase output in multi phase model neither.

*Monitor output (switching of voltage or current)


*Output setting at power-on


*Output relay control


*Output on/off phase setting




*Key lock


*And more!

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