-200V/+600V / ±500V / ±10mA, 64 Channel Precision High Voltage Amplifiers


64 Channel Precision High Voltage Amplifier
  • 64 Channels, ±10mA per Channel
  • -200V to +600V or -500V to +500V
  • Optimized for Capacitive Loads
  • Voltage Monitor Outputs
  • High Precision
  • High Stability
  • Fully Protected
  • Interlock Inputs
  • 19” / 7U Housing
  • Made in Germany


  • Multichannel Actuator Drive
  • EAP
  • Piezo
  • Mirror Deflection / Deforming
  • Electrophoresis
  • Ion Beam Deflection
  • ER Fluids
  • Electro Optics
  • MEMS
  • High Voltage Testing

Rack mountable Precision High Voltage Amplifier in a 19" 7U high subrack. Sixty-four independent amplifier channels provide output voltages in the range of -200V to +600V (HAR-8X8A) or -500V to +500V (HAR-8X8B) at output currents of ±10mAp. The output voltage of each channel can be controlled by means of a setpoint input. Differential amplifiers on the setpoint inputs prevent any ground loops and provide excellent noise suppression. Each channel is equipped with an output voltage monitor.

The unit consists of 8 amplifier modules with 8 channels each. The amplifier channels feature high precision, high stability as well as very low ripple and noise. The amplifier outputs are protected against overload, short circuit and over-temperature.

The channels are grouped into eight standard 19" plug-in units HA8XB10A or HA8XB10A-F of 6U/6HP.

The amplifier is optimized for driving multi-channel capacitive or resistive-capacitive loads. It can easily drive electroactive polymer actuators, piezo elements, electrorheological fluids, ion beam deflectors and many other loads.

The high voltage outputs are protected against overload, short circuit and overvoltage. Operating states and fault conditions are displayed on the front panels.

A safety interlock circuit is provided to integrate the unit into an emergency shutdown circuit. When the interlock loop is open, the internal high voltage sources are being shut down. Two interlock inputs and a red HV OFF palm button are available. The red indicator lamp HV ON signals that the internal high voltage sources are switched on. Using a TTL-compatible INHIBIT-input, the output voltage of each channel can be functionally set to zero very fast.

The robust metal case can be either mounted into a 19“ rack or used as a table-top device. Temperature controlled fans cool the unit.

An external multi channel signal generator is needed to feed the setpoint inputs. The input signal interfaces of the HAR-8X8A and HAR-8X8B match the signal interfaces and the cabling of the National Instruments arbitrary signal generators NI6723 and PXIe-6739 respectively.

In addition to the standard output voltage ranges -200V to +600V and -500V to +500V a version with output voltage range of 0 to +1000V is available. Different output voltage ranges can be installed in a single mainframe simultaneously in groups of eight.

Customized and full custom models are available on request.

Output Connector

All 64 high voltage outputs are brought out to a single multi pole ODU-MAC connector. Each channel features an output contact and an individual output return contact. Coaxial output cables can easily be connected.

Fully assembled output cables and other types of output connectors are available on request.


The information given here is technical data, not assured product characteristics. It has been carefully checked and is believed to be accurate; however, no responsibility is assumed for inaccuracies. The user has to ensure by adequate tests that the product is suitable for his application regarding safety and technical aspects.
hivolt.de GmbH & Co. KG does not assume any liability arising out of the application or use of any product described.

Safety Advice

Design, installation and inspection of machinery and devices carrying high voltage require accordingly trained and qualified personnel. Appropriate safety rules and directives must be complied with.
Improper handling of high voltage can mean severe injuries or death and may cause serious collateral damage!