Products > Amplifiers > Greater than 5 kV

Request a Quote for this Product

TREK Model 40/15 High-Voltage Power Amplifier

The Model 40/15 is a DC-stable, high-voltage power amplifier designed to provide precise control of output voltages in the range of 0 to ±40 kV DC or peak AC with an output current range of 0 to ±15 mA DC or peak AC. The amplifier is configured as noninverting with a fixed gain of 4000 V/V. Inverting and differential input options are available. A potentiometer with a calibrated dial and polarity switch provides a DC offset over a range of 0 to ±40 kV DC.

Industrial and research applications include dielectric studies, electrostatic deflection, and electrooptic modulation.

The Model 40/15 features an all solid-state design for high slew rate, wide bandwidth, and low-noise operation. The four-quadrant, active output stage sinks or sources current into reactive or resistive loads throughout the output voltage range. This is essential for achieving the accurate output response and high slew rates demanded by reactive loads.

The Model 40/15 is protected against overvoltage and overcurrent conditions that may be generated by active loads or by output short circuits to ground. Precision voltage and current monitors provide low-voltage representations of the high-voltage output and load current for monitoring purposes or for use as feedback signals in a closed-loop system. The Remote High Voltage Enable feature provides a connection for a remote device to turn on and off the high voltage of the instrument. This makes the 40/15 useful for automated or computer controlled systems.

 

Show/Hide Product Technical Information

AMPLIFIER INPUT & Output

Input Signal Voltage Range
0 to ±10 V DC or peak AC.
Inverting and differential options are available.

Input Impedance
25 kΩ, nominal (noninverting).
Inverting and differential option 50 kΩ, nominal.

Output Voltage Range
0 to ±40 kV DC or peak AC.

Output Current Range
0 to ±15 mA DC or peak AC.
See Automatic Power Limit feature for limitations.

PERFORMANCE

DC Voltage Gain
4000 V/V.

DC Voltage Gain Accuracy
Better than 0.1% of full scale.

Offset Voltage
Less than ±4 V.

Output Noise
Less than 5 V rms (measured using the true rms feature of the Hewlett Packard Model 34401A digital multimeter).

Slew Rate (10% to 90%, typical)
Greater than 350 V/µs.

Large Signal Bandwidth (2% Distortion)
DC to greater than 1.4 kHz.

Small Signal Bandwidth (-3dB)
DC to greater than 20 kHz.

Stability

  • Drift with Time
    Less than 50 ppm/hr, noncumulative.
  • Drift with Temperature
    Less than 100 ppm/°C.

Settling Time (to 1%)
Less than 200 µs for a 0 to 40 kV step.

Automatic Power Limit
Automatically limits the internal power dissipation to protect the Model 40/15 from overheating. The following graph illustrates the Model 40/15 automatic output power limit range.

Model 40/15 Output Operating Range

 

 

PRODUCT FEATURES

DC Offset Voltage Adjustment
A potentiometer with a calibrated dial adjusts the level of the DC offset voltage from 0 to ±40 kV DC. A three (3) position switch determines positive polarity, negative polarity, or switches the DC bias voltage off.
High-Voltage Enable
Switch selectable for either local or remote control.

  • Local
    Individual push-button switches.
    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.

Dynamics Adjust
A graduated one-turn panel potentiometer is used to optimize the AC response of the Model 40/15 for various load parameters.
Current Limit/Trip
Switch selectable for either current limit or trip. A graduated one-turn potentiometer is used to adjust the limit/ trip level from 0 to ±15 mA.
Out Of Regulation Status
An indicator will illuminate and a BNC will provide a TTL low when the Model 40/15 fails to produce the required high-voltage output such as during current limit.
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, removal of one of the panels, or if the Model 40/15 is in an out of regulation status for greater than 500 ms.
Settling Time (to 1%)
Less than 200 us for a 0 to 40 kV step.
Voltage Monitor
A BNC buffered output provides a low-voltage replica of the high voltage output.

  • Scale
    1/4000th 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 20 mV rms (measured using the true rms feature of the Hewlett Packard Model 34401A digital multimeter).
    Output Impedance
    47 Ω.

Current Monitor
A buffered voltage output provides a representation of the load current.

  • Scale
    0.5 V/mA.
    DC Accuracy
    Better than 2% of full scale.
    Offset Voltage
    Less than ±10 mV.
    Output Noise
    Less than 30 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 Ω.

 

GENERAL

Dimensions
1239 mm H x 578 mm W x 893 mm D
(49" H x 22.8" W x 35" D).
Depth dimension includes handles and 200 mm (8") of spacing bars to insure proper airflow to the fans on the unit.

Weight
100 kg (220 lb) approximate.

High-Voltage Output Connector
Caton high-voltage connector.

Amplifier Input
BNC connector.

Voltage Monitor Connector
BNC connector.

Current Monitor Connector
BNC connector.

Remote High-Voltage Enable Connector
BNC connector.

Out of Regulation Status Connector
BNC connector.

Fault/Trip Status Connector
BNC connector.

AC Line Receptacle
AC line connector.

Power Requirements

  • Line Voltage
    180 to 250 V AC, at 48 to 63 Hz.
  • Power Consumption
    1800 VA maximum.

Operating Conditions

  • Temperature
    0 °C to 40 °C.
  • Relative Humidity
    To 75%, noncondensing.
  • Altitude
    To 5000 ft.

ACCESSORIES SUPPLIED

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

CERTIFICATION

TREK, INC. certifies that each Model Model 40/15 is tested and calibrated to specifications using measurement equipment traceable to the National Institute of Standards and Technology or traceable to consensus standards.


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

  • Products
  • Downloads
  • Technical Info
  • Applications
  • Sales & Support
  • News & Events
  • About Trek