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Power Amplifier HV-PA150-2D

High-Voltage Power Amplifier With Programmable Digital Waveform Generator for Driving Piezoelectric Actuators

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This device is a combination of a high-voltage power amplifier and a programmable digitally controlled waveform generator.

The amplifier is able to provide an output power of about 350 VA to loads with a significant capacitance. The output terminals produce voltages which are symmetrical with respect to ground. The total output voltage is almost unipolar and ranges from -10 to +150 V.

The waveform generator can produce preferably harmonic signals or a combination of them in a frequency range of up to several kHz. The signal output can be synchronized with external devices via the trigger input.

The device is equipped with an interlock loop that disables and shorts the output if it is opened. The device also contains circuitry that scans the temperature measured by an external Pt1000 sensor.

The waveform generator is equipped with a USB data interface that allows the user to transfer waveform data to or from the device. To check the output signal of the amplifier, two monitor outputs are available.

The amplifier and its power supplies are linearly operating circuits. The emission level of electromagnetic radiation is therefore very low.

#Technical Data


  • High-voltage amplifier for heavy capacitive loads
  • Programmable waveform generator with USB interface
  • 19" case


  • Output connector: LEMO ERA.4S.737.CLL (panel socket with 2 high-voltage pins)
  • Output voltage: -10 – +150 V (2 symmetrical outputs with -5 – +75 V and +5 – -75 V)
  • Switchable offset: 70 V (±35 V)
  • Output current: >3 A continuous, >5 A pulsed
  • Signal bandwidth: DC–8 kHz without load, DC–6.5 kHz with a load of 70 µF
  • Power bandwidth: limited by the output current, >100 Hz with a load of 70 µF
  • Output noise: 20 mVpp


  • Interlock loop: three pins at the output connector, short circuit enables the amplifier
  • Overcurrent protection: output current limiter
  • Overtemperature protection:
    • Temperature sensor at the heatsink
    • Temperature sensor PT1000 at the actuator
    • (Shutdown and restart temperatures freely programmable)


  • Input switchable between TTL and optical
  • TTL input:
    • Connector: insulated BNC socket
    • Levels: Low <0.8 V, High >2.0 V
    • Input impedance: 51 kΩ (internal pull-down)
    • Precision: better than 50 ns
  • Optical input:
    • Connector according to the Versatile Link standard
    • Precision: better than 200 ns


  • TTL input:
    • Connector: insulated BNC socket
    • Levels: Low <0.8 V, High >2.0 V
    • Input impedance: 50 Ω or 51 kΩ (internal pull-down)
    • Allowable frequency range: 5–20 MHz


  • Monitor outputs: two 50 Ω BNC sockets, attenuation: 1:10, internal impedance: 10 kΩ parallel with 100 pF
  • LEDs: Power, Amplifier Activated, Interlock, Fan Failure, Amplifier Overheated, Actor Overheated
  • Supply voltage monitoring

Waveform Generator

  • Resolution: 16 bit
  • Data rate: 254 S/s – 16.7 MS/s
  • Total memory size: 512 KW (= 512 KWords = 1 MB)
  • Memory space for waveform data: 508 KS (= 520192 samples)
  • Waveform size: variable from 2 S to 64 KS (= 65536 samples)
  • Maximum number of stored waveforms: 100
  • Maximum number of stored measurements: 100
  • Trigger: manual/external
  • Trigger delay: 0 ms – 6.5 s, adjustable with a precision of 0.1 ms
  • Smart triggering for selecting the measurement for the next output
  • External synchronization

Human Interface

  • Monochrome LCD display 128×64 pixels, pixel size: 0.5 mm, pixel color: yellow, background: blue, background illumination: white LED
  • Keypad: 5 keys: 4× direction + 1× "enter"
  • Encoder: 24 positions per revolution, integrated press button
  • Press button for amplifier activation
  • Optional external shutdown button via the interlock loop

Digital Interface

  • USB interface according to USB 2.0 standard
    • Connector: USB plug type B
    • Data transfer rate: up to 12 MBit/s (Full Speed)
    • Effective data transfer rate: >100 kBit/s

Power Supply

  • Rated voltage: 230 V ±10%, 50 Hz
  • Inrush current: limited to 3.6 A
  • Power consumption:
    • Standby (amplifier deactivated): 25 VA
    • Amplifier activated but without signal: 140 VA
    • Maximum: 350 VA
    • Peak: 1.1 kVA
  • Main fuse: T 4 A (slow acting), size ø5×20 mm
  • Mains connection: IEC inlet with EMC filter and integrated fuse holder


  • 6 U 19" bench-top case:
    • Height: 266 mm, width: 448 mm, depth: 480 mm
    • Total depth including heatsink, fans, and handles: 650 mm
    • Total height including case feet: 280 mm
  • Heatsink: black anodized extruded aluminum profile on the rear panel
  • Forced cooling:
    • Four 120 mm fans on the heatsink
    • Temperature-dependent regulation of the fan speed
    • Monitored fan operation, warning in the event of fan failures
  • Weight: 27.5 kg
  • Cleaning: only use a damp cloth, avoid use of organic solvents


User Manual

HV-PA150-2D_1-10_A.pdf HV-PA150-2D_1-10_A.pdf, 826.3 KB: User manual
Manual.txt Manual.txt, 140 B: Manual revision history


Further user manuals, software, and firmware can be downloaded here: DAFG-1S

Information on how to open the various file formats can be found here.

#Additional Information


Programmable digital waveform generator module

Shipment Contents

  • High-voltage amplifier HV-PA150-2D in 19" case
  • Line cord (universal IEC mains lead, length 1.8 m)
  • EMI filter unit
  • Two output cables with LEMO ERA.4S.737.CLL connectors, maximum length about 10 m
  • Control and diagnostic software (see above)
  • User manual (see above)


Interface card
USB 2.0 interface card
Output cable(s)
1 or 2 LEMO plugs FFB.4S.737, length up to about 10 m
Filter unit
High frequency filter for the output cable
(Not part of the shipment, please order separately)