High Voltage Products

Trek 20/20C

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

Advanced Energy’s Trek 20/20C high voltage amplifier offers extensive bandwidth and low-noise operation. It’s solid-state design and high slew rate make it optimal for industrial and research applications.

  • Output Voltage: 0 to ±20 kV DC or Peak AC
  • Output Current: 0 to ±20 mA DC Peak AC
  • Slew Rate: Greater than 450 V/µs
  • Large Signal Bandwidth: DC to greater than 7.5 kHz (-3dB)
  • Gain: 2000 V/V fixed
  • Overview
  • Technical Specs
  • Documents
  • Accessories
  • Service & Support
  • Distributors


Meet the demands of highly capacitive or reactive loads. The DC-stable Trek® 20/20C high-voltage power amplifier has a four-quadrant, active output stage that is essential to achieve accurate output responses and high slew rates. It sinks or sources the current into reactive or resistive loads throughout the output voltage range.

The Trek 20/20C is used in numerous industrial and research applications such as material characterization, ferroelectrics, and atmospheric plasma.

Advanced Energy’s Trek 20/20C-HS high voltage amplifier offers three times more peak current, a higher slew rate, and even more bandwidth. Learn more.


  • Drive capacitive loads via a four-quadrant output
  • Enable high accuracy thanks to a closed-loop system
  • Safeguard equipment with short-circuit protection
  • Benefit from maintenance-free operation and solid-state design
  • Take advantage of low-output noise and ultra-accurate outputs


  • Dynamic adjustment optimizes the AC response for various load parameters
  • NIST-traceable calibration certificate provided with each unit
  • DC-stable for programmable supply applications
  • Local and remote high voltage ON/OFF capabilities
  • Switch selectable for current limit or trip

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 peak AC


    2000 V/V

    Slew Rate

    Greater than 450 V/μs (10% to 90%, typical)

    Large Signal Bandwidth

    DC to greater than 7.5 kHz (-3 dB)
    DC to greater than 3.75 kHz (1% distortion)

  • 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

    Output Noise

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

    Output Impedance

    47 Ω

  • Current Monitor


    0.5 V/ mA

    DC Accuracy

    Better than 1% of full scale

    Offset Voltage

    Less 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 10 kHz

    Output Impedance

    47 Ω

  • 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 to 40°C (32 to 104°F)

    Relative Humidity

    To 85%, non-condensing


    To 2000 meters (6561.68 ft)

  • Mechanical


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


    24.9 kg (55 lb)

  • 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.

Documents & Support

View All Trek 20/20C 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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Applications Support & Consulting

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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Decrease variability in maintenance costs and provide additional cost protection. Advanced Energy offers whole-box extended warranties.

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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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