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Products: High Voltage Amplifiers

Model PZD2000A High-Voltage Power Amplifier

The Trek Model PZD2000A is a wide bandwidth high-voltage power amplifier used for precision high power applications. This new addition to the Trek power amplifier product line is designed to provide precise control of output voltages in the range of 0 to ±2 kV DC. Features include an output current range of 0 to ±400 mA and an excellent large signal bandwidth capability.

The Model PZD2000A incorporates an all-solid-state design for high reliability and low-noise operation while its four-quadrant output stage sinks as well as sources load current throughout the output voltage range, thus achieving accurate output response and high slew rates, even into highly capacitive loads. The output stage is fully protected against overvoltage and overcurrent conditions that may be generated by active loads, overloads, or arcing to ground.

Precision voltage and current monitors provide buffered low-voltage representations of the high-voltage output and load current for monitoring purposes, or for use as feedback signals in closed-loop systems.

A remote high-voltage ON/OFF feature provides remote operation from automated or computer-controlled systems.

Industrial applications include dielectric material characterization, polymer and ceramic corona poling, and piezoelectric driving and control.

The Model PZD2000A high-voltage, high bandwidth, power amplifier can be operated on a bench top or in a standard 19-inch rack.

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PERFORMANCE

  • DC Voltage Gain
    200 V/V.
  • DC Voltage Gain Accuracy
    Better than 0.1% of full scale.
  • Offset Voltage
    Less than ±2 V.
  • Slew Rate (10% to 90%, typical)
    Greater than 750 V/us.
  • Large Signal Bandwidth (3% Distortion)
    DC to greater than 60 kHz.
  • Small Signal Bandwidth (-3dB)
    DC to greater than 100 kHz.
  • Stability
    • Drift with Time
      Less than 50 ppm/hr, noncumulative.
    • Drift with Temperature
      Less than 100 ppm/°C.
  • Output Noise
    Less than 500 mV rms (measured using the true rms feature of the Hewlett Packard Model 34401A digital multimeter).
  • Settling Time (to 1%)
    Less than 50 µs for a 0 to 2 kV step.
  • Automatic Power Limit
    Automatically limits the internal power dissipation to protect the PZD2000A from overheating. The following graph illustrates the automatic power limit.
  • Model PZD2000A Output Operating Range

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PRODUCT FEATURES

  • High-Voltage On/Off
    Switch selectable for either local or remote control.
    • Local
      Individual ON/OFF push-button switch.
    • Remote
      A TTL compatible input. A TTL high (or open) turns off the high-voltage output. A TTL low turns on the high-voltage output.
  • Dynamic Adjustment
    A graduated one-turn potentiometer is used to optimize the
    AC response of the Model PZD2000A for various load parameters.
  • Current Limit/Trip
    Switch selectable for either current limit or current trip. A graduated one-turn potentiometer is used to adjust the current limit or trip level from 10 to 200 mA.
  • Out Of Regulation Status
    An indicator will illuminate and a BNC will provide a TTL low when the PZD2000A fails to produce the required high-voltage output such as during current limit.
  • Trip Status
    An indicator will illuminate and a BNC will
    provide a TTL low when the high-voltage output is disabled due to the output current exceeding the current trip level, the detection of a high-voltage power supply fault, or the removal of the top cover.
  • Fault Status
    A BNC will provide a TTL low when the PZD2000A is out of regulation for greater than 500 ms.
  • Voltage Monitor
    A buffered output provides a low-voltage replica of the
    high voltage output.
    • Scale
      1/200th of the high-voltage output signal.
    • DC Accuracy
      Better than 0.1% of full scale.
    • Offset Voltage
      Less than ±2 mV.
    • Output Noise
      Less than 5 mV rms (measured using the true rms feature of the Hewlett Packard Model 34401A digital multimeter).
    • Output Impedance
      47 ohms.
  • Current Monitor
    A buffered output provides a low-voltage representation of the load current.
    • Scale
      0.025 V/mA.
    • DC Accuracy
      Better than 1% of full scale.
    • Offset Voltage
      Less than ±10 mV.
    • Output Noise
      Less than 10 mV rms (measured using the true rms feature of the Hewlett Packard Model 34401A digital multimeter).
    • Bandwidth (-3db)
      DC to greater than 5 kHz.
    • Output Impedance
      47 ohms.

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OUTPUT

  • Output Voltage Range
    0 to ±2 kV DC or peak AC.
  • Output Current Range
    0 to ±200 mA DC or ±400 mA peak AC. Maximum duration for ±400 mA current pulse is 2 ms. at 50% duty cycle using a square wave. (See Automatic Power Limit
    feature for limitations.)
  • Maximum Power
    500 W (real, apparent, or reactive). Unit will trip off if the internal power dissipation exceeds 500 W.

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AMPLIFIER INPUT

  • Input Voltage Range
    0 to ±10 V DC or peak AC.
  • Input Impedance
    25 kohm, nominal.

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ACCESSORIES

  • Accessories Supplied
    • Operator’s manual, 3 m (10 ft) high-voltage output cable assembly, and line cord.

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GENERAL

  • Power Requirements
    • Line Voltage
      Factory set for one of two ranges:
      104 to 126 V AC or 180 to 250 V AC, at 48 to 63 Hz (specify when ordering).
    • Power Consumption
      1000 VA, maximum.
  • Operating Conditions
    • Temperature
      0 °C to 40 °C.
    • Relative Humidity
      To 85%, noncondensing.
  • Dimensions
    266 mm H x 482 mm W x 655 mm D
    (10.5" H x 19" W x 25.8" D).
    • Weight
      24.9 kg (55 lb).
  • High-Voltage Output Connector
    Alden high-voltage connector.
  • Amplifier Input
    BNC connector.
  • Voltage Monitor Connector
    BNC connector.
  • Current Monitor Connector
    BNC connector.
  • Digital Enable Connector
    BNC connector.
  • Trip/Limit Connector
    BNC connector.
  • AC Line Receptacle
    Standard IEC three-prong AC line connector.

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CERTIFICATION

TREK, INC. certifies that each Model PZD2000A is tested and calibrated to specifications using measurement equipment traceable to the National Institute of Standards and Technology or traceable to consensus standards.

  • Low-Voltage Safety Compliance
    • Installation Category
      CAT II: Local level mains, appliances, portable equipment.
    • Pollution Category
      Degree 1: Operate in environments where no pollution or only dry, nonconductive pollution occurs.

All specifications are with no load unless otherwise noted and are subject to change.

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