High Voltage Products

Trek 20/20C-HS

High-Speed, High Voltage Amplifier, Output Voltage 0 to ±20 kV DC or Peak AC

Advanced Energy’s high-speed Trek 20/20C-HS high voltage amplifier is DC-stable. It is used in a vast variety of industrial and research applications such as insulation breakdown and delta tan testing, electrostatic deflection, and ion beam steering.

  • Output Voltage: 0 to ±20 kV DC or peak AC
  • Output Current: 0 to ±20 mA DC or 60 mA peak AC for 1 ms (cannot exceed 20 mA RMS)
  • Slew Rate: Greater than 800 V/µs
  • Large Signal Bandwidth: DC to greater than 5.2 kHz (1% distortion)
  • Gain: 2000 V/V fixed
  • Overview
  • Technical Specs
  • Documents
  • Accessories
  • Service & Support
  • Distributors


The non-inverting Trek® 20/20-HS high voltage amplifier features an all-solid-state design, high slew rate, ample bandwidth, and low-noise operation. It’s four-quadrant, active output stage sinks or sources the current into reactive or resistive loads throughout the output voltage range. For demanding highly capacitive or reactive loads, this type of output is essential to enable accurate output responses and high slew rates.


  • Achieve high accuracy with a closed-loop system
  • Drive capacitive loads via a four-quadrant output
  • Rely on ultra-accurate outputs thanks to low-noise operation
  • Take advantage of nearly maintance-free operation and solid-state design
  • Reliably use in various applications


  • DC-stable for programmable supply applications
  • NIST-traceable calibration certificate provided with each unit
  • Short-circuit protection for safeguarding equipment
  • CE compliant (230 VAC unit only)
  • Local and remote high voltage On/Off capabilities

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

  • Performance

    Output Voltage Range

    0 to ±20 kV DC or peak AC

    Output Current Range

    0 to ±20 mA DC or ±60 mA peak for 1 ms (must not exceed 20 mA rms)

    DC Voltage Gain

    2000 V/V

    Slew Rate (10 to 90%, typical)

    Greater than 800 V/µs

    Large Signal Bandwidth

    DC to greater than 5.2 kHz
    (The unit will trip when maximum is reached)

  • Voltage Monitor


    1/2000th of the high-voltage output

    DC Accuracy

    Better than 0.1% of full scale

    DC Offset Voltage

    Less than ±2 mV

  • Current Monitor


    1 V/6 mA

    DC Accuracy

    Better than 1% of full scale

    Offset Voltage

    Better than ±10 mV

    Output Noise

    Less than 30 mV rms
    (measured using the true rms feature of the HP Model 34401A digital multimeter)

    Bandwidth (-3dB)

    DC to greater than 20 kHz

    Output Impedance

    47 Ω

  • Mechanical


    279 x 482 x 654 mm (11 x 19 x 25.75 in)

    140 x 432 x 374 mm (5.5 x 17 x 15 in)


    24.9 kg (55 lb)

  • Electrical

    Line Voltage

    Factory Set for one of two ranges: 104 to 127 VAC or 180 to 250 VAC, either at 48 to 63 Hz

    Power Consumption

    1000 VA maximum

    AC Line Receptacle

    Standard IEC 320 three-prong AC line connector

  • Operating Conditions


    0°C to 40°C (32°F to 104°F)

    Relative Humidity

    To 85%, non-condensing


    To 2000 meters (6561.68 ft)

  • Typical Applications

    • Electrostatic deflection
    • Electrophoresis!Electrorheological fluids
    • Electro-optic modulation
    • Material poling
    • AC or DC biasing
    • Ion beam steering
    • Particle accelerators
    • Mass spectrometers
    • Material characterization
    • Ferroelectrics
    • Atmospheric plasma
    • Dielectric barrier discharge

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.

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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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