High voltage module


High voltage module in the form-factors: NIM, VME, CAMAC, 3U – 1 channel and 6U – multi-channel formats, reversible polarities. Download our full catalog here.



Instrumented 3U high voltage module | 2 kV to 5 kV | for Iseg Spezialelektronik chassis



1-channel HV-cassette | 500 V to 30 kV | for 3U chassis | Iseg Spezialelektronik | Reversible polarities for the DPR modules



Multichannel HV cassette |100 V to 20 kV | 1 to 32 channels | Iseg Spezialelektronik



4- and 8-channel low-voltage multichannel module | 8 V to 120 V DC | WIENER Power Electronics



The high voltage module EHQ-1 offers voltages ranging from 2 kV to 5 kV with currents from 2 mA to 6 mA.

These modules offer a complete instrumentation on the front panel, with several configuration switches. On / Off, KillEnable / KillDisable, current monitoring / voltage monitoring. There is also a 10-turn potentiometer for voltage adjustments and a liquid crystal display (LCD) for reading voltage and current.

Reversible polarity:

The polarities are reversibles by a rotary switch which is easily accessible on the lateral side. There is no specific handling required. No screws to be removed, no cover to be opened, and it is not necessary to turn over the high voltage block. There are no risks of breaking pins or tearing off components during such an operation.

The lateral side also has 2 rotary micro switches whose role is to clamp the voltage and the current in small incremental steps of 10%.


In addition of a mini USB port on the front side, the EHQ-1 cassettes are inserted in 4 slots or 8 slots chassis. They have either individual RS232 or common CANbus interfaces, which are located on the rear panel.

This concept has been proven for almost 20 years; it is continuously upgraded with the latest technologies. They are for example used to feed micro channel plates (MCP) or wire chambers in industry and research.


3 models from 500 V to 30 kV:

This range of high voltage modules is comprised of a series of 3 DC-DC high voltage modules from 500 V to 30 kV with powers from 10 W to 60 W.

Modular solutions:

The module is offered in a 3U vertical format with a depth of 160 mm, and it is intended to be placed in a standard 19″ rack with 8 or 10 slots or a small rack with 4 slots.

This very modular solution allows the insertion of:

  • high performance standard voltage modules (CPS), with
  • high stability, very low noise and reversible polarity modules (DPR), and with
  • more powerful modules (EPS) in the same application.

A USB and Ethernet controller equipped with 20-bit DAC and 24-bit ADC converters enablecommunication with the outside world. The resolution is very high, with around 10 mV on a potential of 1000 V (example).

Automatic identification:

The high-voltage module is now equipped with a ID-chip identification system for an automatic detection as well as an easy and secure integration. For the DPR series, reversible polarity is possible via remote control.

This flexible high-voltage 3U 1-channel instrumented module is suitable for ion beam applications, especially with ion extraction, supply of lenses by switching polarities, supply of deflectors, supply Wien filters.

Together with our high voltage switches from CGC Instruments, they are used in applications involving electrostatic quadrupoles, penning traps, paul traps and in general in ion beams.


NIM high voltage modules for small setups require high flexibility. The NIM modules are standardized, with a height of 222 mm and a width of 34.3 mm. They are fitted with high-speed serial interfaces of USB-2 or Ethernet type. They are equipped with a multi-pin AMP connector on the rear panel, which is supposed to supply the voltages +/- 6 VDC, +/- 12 VDC and +/- 24 VDC (optional 117 VAC) with enough power. Most of them are offering a reversible polarities. Reversible polarities are done by mechanical switches (NHQ series), or electronic switches (NHR series).

They are versatile and therefore suitable for high-resolution digitizer applications, as well as complex logical and synchronization functions such as for spectroscopy amplifiers or simply for low and high voltage power supplies.

Different NIM solutions exist to meet this versatility:

  • NIM high voltage modules in different configurations (low cost, standard and high precision, reversible polarities), with 1, 2, 4 and 6 channels in voltage ranges from 100 VDC to 6 kVDC.
  • NIM cassettes in a kit for self-assembly to integrate your own PCBs, like for example electronic cards based on processors which carry out acquisition tasks.

All these modules are intended to be inserted in a chassis. You will find our complete offer in section ‘NIM chassis’.

Video demonstration of the NIM NHS high voltage module (analogy with the last generation NHR)

  • Find the USB connector with the NHS module
  • Select a specific high voltage channel
  • Read voltage and current on the display
  • Push button for On / Off actions
  • Define the voltage ramp
  • Change ADC Sample rate value
  • Change the value of the digital filter
  • Set hardware trip limits Vmax and Imax
  • Activate the Safety Loop of the NIM drawer
  • Read the temperature and the +/- 6 VDC and +/- 24 VDC power supply from the NIM chassis
  • Etc …


A wide variety of choices:

We offer a wide variety of high voltage multi-channel modules in proprietary formats, with options based on the following characteristics.

  • Number of channels and density.
  • Connections – multi pin or single pin – and its wiring.
  • Regulation mode – voltage or current – and their stability performance.
  • Maximum output current.
  • Power consumption and efficiency.
  • Amplitude of ripple & noise.
  • Resolution and accuracy (standard deviation).
  • Temperature and time drifts.
  • Reversible polarities.
  • etc …

3 high voltage generation modes:

These main criteria then allow you to orient yourself towards the high voltage module solution that meets your needs:

Separate voltage source mode with one transformer per channel. The high voltage modules as STANDARD or HIGH PRECISION version are equipped with separate sources for each channel. The adjustment is extremely precise in voltage and current. The output power per channel is 9 W. The HIGH PRECISION version is equipped with a second current measurement range that is electronically switched, and  it has a resolution of 50 pico Amps.

Single-pole voltage generator mode with a single, multi-winding transformer, whose secondaries are rectified and filtered. This mode can provide high voltage modules with up to 24 channels per PCB for a total of 48 channels per module (two face-to-face PCBs). The displayed objective is the most attractive cost / channel ratio possible. Each voltage is controlled between 1% * Vnominal at the bottom of the scale and 100% of the nominal value at the top of the scale. A current measurement is made with a resolution of 10 (-4) * Inominal. Current regulation is not possible, any overshooting of the set point instantly cuts the voltage. The output power is limited to 1.5W per channel.

Bipolar voltage source mode with one transformer stage per channel. A high voltage module of the bipolar distributor type has a positive source and a negative source. Active charging electronics authorize operations in 4-quadrant mode and in “zero crossing” mode with automatic passage through the baseline (0 volts). The other properties are identical to the unipolar voltage source mode.

Galvanic isolation:

Another technical aspect to consider is galvanic isolation. It contributes to a notable reduction of parasitic noises coming back from common ground by other electronic devices. We offer 3 types.

  • COMMON GROUND (CG), where all the grounds of the high voltage modules are electrically linked to the chassis earth.
  • The COMMON FLOATING GROUND (CF-GND) indicates that all the channels have a common ground with the high voltage modules and that the latter is isolated from the chassis at +/- 60 V max.
  • The FLOATING GROUND (FG) shows that each output channel has its isolated ground, not only in relation to the chassis, but also in relation to the other channels. The insulation level is +/- 25 V or +/- 2000 V on request.

Compact, rigid and robust mechanics:

100% of our high voltage modules are offered in an extremely compact mechanical format with a height of 6U. The depth is limited to 220 mm, ensuring the best rigidity and robustness possible . The width of the high voltage modules always make 1 slot (40.3 mm) whatever the number of channels, the voltage level, the current intensity and the power. We do not offer “double width board” modules which would limit the number of cassettes to be inserted into the chassis and make your design projections difficult. Our high voltage module solutions offer an excellent cost / channel ratio.

Together with our high voltage switches from CGC Instruments, they are used in applications involving electrostatic quadrupoles, hexapoles, bipolar steerer, penning traps, paul traps and in general in ion beams.


Low voltage module MPV series, floating ground with Senses:

The range of low voltage modules is mainly composed of the MPV series. These low voltage modules offer 4 and 8 independent low voltage DC channels, that are regulated in voltage and current. All outputs are floating, it means you may use it as reversible polarities, positive or negative outputs. This allows the wiring with the pole (-) to ground to generate a positive voltage or with the pole (+) to ground to obtain a negative voltage. In order to compensate the line losses consecutively to the high current intensities, “sense” returns connected to the regulation loops provide stable voltages at the end of the cables, on the load side.

For more informationplease follow the technical information on the W-IE-NE-R Power Electronics website.

Extreme power density:

The exclusivity of the MPV technology lies in its mode of supply. An alternating voltage of 385 – 400 VAC from the backplane is directed to each transformer on each input stage of the module. A high transformation ratio makes it possible to obtain low voltages on the outputs. Inversely proportional, this also makes it possible to amplify the current at high levels without requiring power from the upstream chassis. All our chassis are correctly dimensioned, so that all power can be transferred to all the output channels without any restriction. Thus all the modules of the same chassis are always capable of delivering 50 W / channel (8-channel model) and 100 W / channel (4-channel model) for a total of 400 W per module. The MPV series low voltage module is used to power front-end electronic cards of preamp, amplifier, ASIC, FPGA or any type of data acquisition card.

High Resolution Version:

NEW: The new High Accuracy MPV series provides up to 21-bit resolution for voltage and current measurement. Voltage vs. current resolutions range from 2 µV to 40 µV and from 32 nA to 1.5 µA according to models.

  • This module is flexible, allowing to measure a fairly low current after the load/experiment starts (maybe about 1 mA total) with appropriate resolution and be able to measure a much higher current later, in the ampere range.
  • Used in particle physics applications to feed MPPC detectors (Multi Pixel Photon Counters).