• DOM series
  • DOM series

Discontinued DOM series

Compact bipolar power supplies for electromagnet

DOM series is no longer available as we have stopped the production and sales this model in September 2020. Meanwhile, we support.

Suitable for precise control of magnetization and demagnetization by electromagnet!

DOM series is a four-quadrant bpolar power supply which succeeded in miniaturization by high-efficiency switching amplifier method and electric power regenerative function.
It can also realize smooth demagnetization, thanks to a high current which is required in magnetization of the electromagnet and four-quadrant operation that can perform both "source" and "sink" of electric power.
By the simple operation on the front panel, the setting of output voltage/current and the outputting safely are available.

  • Though the new model is the same 1 kW
  • output class, height becomes half
Though the new model is the same 1 kW output class, height becomes half!

Features and Benefits

  • Source and sink of current of ±125 A maximum are available in spite of the compact size of height 3 U.
  • DOM can control electromagnet quickly and precisely because of four-quadrant operation.
  • Utilizing electricity effectively* and reducing generation of heat are available because of electric power regenerative function.
  • Low ripple, excellent stability and useful protection realize high performance and safer safety.

* It is designed on the assumption that all regenerated electrical power is consumed on the premises.


Control of electromagnet, testing for in-vehicle electrical components and various motors, evaluation test for solar panel and film formation (electroplating)

DOM series is not the power supply which is designed for evaluating charge/discharge of batteries.
There is the dedicated power supply which is suitable for such a use, so please feel free to refer.


Available in the near future. For details, please ask our sales office.

Model Output Frequency bandwidth (-3 dB)
Voltage [V] (rms) Current [A] (rms) Power [kW]
DOM6-125 0 to ±6
(0 to ±4.2)
0 to ±125
(0 to ±87.5)
0.75 DC to 1 kHz
(at low amplitude)
DOM10-75 0 to ±10
(0 to ±7)
0 to ±75
(0 to ±52.5)
DOM20-50 0 to ±20
(0 to ±14)
0 to ±50
(0 to ±35)
DOM50-20 0 to ±50
(0 to ±35)
0 to ±20
(0 to ±14)
DOM100-10 0 to ±100
(0 to ±70)
0 to ±10
(0 to ±7)


For details, download the datasheet below.


-LGob: Optical Interface Board

  • -LGob: Optical interface board + optical cable 2m
  • -LGob(Fc5): Optical interface board + optical cable 5 m
  • -LGob(Fc10): Optical interface board + optical cable 10 m
  • -LGob(Fc20): Optical interface board + optical cable 20 m
  • -LGob(Fc40): Optical interface board + optical cable 40 m

Isolated control is realized via optical communication.
It is possible to prevent malfunction such as transient phenomenon by surge, lightning induction and exogenous noise.

Controllable items

Output ON/OFF, setting the value of output voltage/current, switching CV mode and CC mode

(A converter is required separately. Please ask our sales representative.)

Amplifier DOM Series Optical interface board
Select the -LGob option when using power supply following environmental condition.
  • Factories which has a lot of noise
    (Example) in case of using power supplies and loads near motors and coils.
  • In case using power supply with high voltage floating (more than 250 V)
  • The length between power supply and controller unit (PC or PLC) is more than 2-meter

How to Order

To order, please add the above following option mark to the model number.
  • Example:
  • DOM100-10-LGob
  • DOM6-125-LGob(Fc40)
  • (Alphabetical and input voltage order)

Tech Notes

Capacitive Load

When a capacitive load is more than 100 pF (including a stray capacitance of output wire), the resonance in the output may occur. In that case, install 100-ohm (@0.1 μF) to 1000-ohm (@1000 pF) of high voltage resistance in the output in series. Please note that the frequency band will be limited as the formula written in the right figure when an amplifier is used with a capacitive load.
In addition, when an amplifier is used for the use such as a corona discharge, the current which is higher than rating will flow and it will affect the amplifier badly. In this case, as well as the time to use an amplifier with a capacitive load, please install the output resistance and limit the current.

* Please avoid continuous inputting of high frequency signal which reduces output frequency of an amplifier. An amplifier will be broken because of increase of internal loss.

This image explains frequency band when a capacitive load is connected.

Read more


The account registration is necessary for downloading

In this website, we provide only the latest version of information including instruction manuals as of our products. Therefore, the newest versions of manuals on the website might be not same as the ones of products you purchased in the past.

Please click here if you are not registered yet to our site.

Membership Registration (Free)

Please click here if you are already registered to our site.

Log in

Bipolar power supplies/High voltage Amplifiers