High Voltage Products

Trek 677B

High Voltage Power Supply and Amplifier, Output Voltage 0 to ±2 kV DC or Peak AC

Advanced Energy’s Trek 677B is a high voltage power amplifier and supply designed to provide precise output voltage control.

  • Output Voltage: 0 to ±2 kV DC or peak AC
  • Output Current: 0 to ±5 mA DC or peak AC
  • Slew Rate: Greater than 15 V/µs
  • Large Signal Bandwidth: DC to greater than 1.2 kHz (1% Distortion)
  • Gain: 200 V/V
  • Overview
  • Technical Specs
  • Documents
  • Accessories
  • Service & Support
  • Distributors


The Trek® 677B can be configured as a high voltage non-inverting amplifier with a fixed gain or as a high voltage power supply. When configured as a high voltage power supply, the front panel controls are used to command the exact output voltage or current.

The Trek 677B features an all-solid-state design for expansive bandwidth, high slew rates, and low-noise operation. The four-quadrant, active output sinks or sources the current into reactive or resistive loads throughout the output voltage range. This is essential to achieve the accurate output responses and high slew rates demanded by a variety of loads including highly capacitive or reactive loads.


  • Operate as a high voltage amplifier (non-inverting configuration) or as a high voltage power supply
  • Drive capacitive loads via a four-quadrant output
  • Use in electrostatic beam deflection, electrooptic modulation, electrophoresis research, piezoelectric poling and driving, electrostatic chucks, and various other applications
  • Enable high accuracy thanks to a closed-loop system
  • Benefit from low-noise operation and an all-solid-state design


  • Dynamic adjustment optimizes the AC response for various load parameters
  • NIST-traceable calibration certificate provided with each unit
  • DC-stable for programmable supply applications
  • Short-circuit protected for safeguarding equipment
  • Digitally enabled

Select specifications are shown below. Please see product data sheet for additional specifications.

  • Performance

    Output Voltage Range

    0 to ±2 kV DC or peak AC

    Output Current Range

    0 to ±5 mA DC or peak AC


    200 V/V

    Slew Rate

    Greater than 15 V/μs (10% to 90%, typical)

    Large Signal Bandwidth

    DC to greater 1.2 kHz (1% distortion)

  • Voltage Monitor


    1/200th of the high-voltage output signal

    DC Accuracy

    Better than 0.1% of full scale
    (May degrade to 0.6% in the presence of RF fields up to 3 V/m)

    DC Offset Voltage

    Less than 5 mV

    Output Noise

    Less than 10 mV rms
    (Measured using the true rms feature of the HP Model 34401A digital multimeter)

    Output Impedance

    0.1 Ω

  • Current Monitor


    1 V/mA

    DC Accuracy

    Better than 1% of full scale

    Offset Voltage

    Less than 5 mV

    Output Noise

    Less than 10 mV
    (Measured using the true rms feature of the HP Model 34401A digital multimeter)

    Bandwidth (-3dB)

    DC to greater than 800 Hz

    Output Impedance

    0.1 Ω

  • Mechanical


    110 x 223 x 432 mm (4.3 x 8.7 x 17 in)


    4 kg (9 lb)

  • Electrical

    Line Voltage

    Factory Set for one of two ranges:
    90 to 127 VAC or 180 to 250 VAC, either at 48 to 63 Hz

    Power Consumption

    220 VA, maximum

  • Operating Conditions


    0 to 40°C (32 to 104°F)

    Relative Humidity

    To 85%, non-condensing


    To 2000 meters (6561.68 ft)

  • Typical Applications

    • Electrostatic beam deflection
    • Electrooptic modulation
    • Electrophoresis research
    • Piezoelectric poling and driving

Specifications are subject to change without notice. Not all options and accessories are available for all models and configurations. Dimensions listed generally refer to standard configurations and module bodies only. Please confirm technical specifications and customizations with a sales representative. Advanced Energy is not responsible for errors or omissions.


Amplifier Selection Calculator

To help you select the appropriate Trek amplifier, we created this calculator. It uses peak-to-peak voltage to help calculate values associated with driving capacitive loads. If you have any difficulty with this software or would rather not do the download, please use the step-by-step calculator procedure.

Documents & Support

View All Trek 677B Accessories

Global Support & Services

Maximize fab productivity and capital equipment ROI with world-class support through each product lifecycle stage — from startup to long-term operation. Our service offerings are based on more than three decades of precision power and applications expertise.

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Accelerate tool installations and process development programs, or address specific applications concerns with Advanced Energy's dedicated applications consultants and engineering staff. Benefit from on-site reviews, analyses, and consultations.

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Product Support

U.S.: +1 800 446 9167
Asia: +86 29 8874 1895
China: 400 8899 130
EMEA: +44 800 032 1546
U.K.: 08000 321 546

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