Laboratory driver, dual channel 

Standard product 

Download NDR6881 datasheet (PDF)

NDR6881 Dual Channel Dynamic Driver for Piezoelectric Actuators

High current
High power
Power recovering
Wide frequency range
Two separate channels
Floating outputs
Galvanic separation of outputs from other circuitry 

Purpose 

The NDR6881 is the dual channel driving unit used for static and dynamic supply of large piezoelectric actuators having capacity up to 200uF. The NDR 6881 is primarily designed as a standalone laboratory desktop unit. It is used for driving or positioning or (in common sense for operating only the piezoelectric actuators/stacks of various types. The device is not designed for use with loads having high energetic losses. The device also cannot be used with piezoelectric actuators having positive energetic balance in long term meaning (energy harvesting).

Description 

The device is a source of single polarity voltage. Its value is proportional to input signal. The NDR6881 consists of two main blocks – the preamplifier and the high voltage stage. The input stage is galvanically separate from the output high voltage part. Signal ground of the BNC connector is connected to device casing. Amplifier outputs are floating. One of its wires could be optionally grounded externally.