High Voltage Power Amplifier

  • Product No:20/20C-HS
  • Manufacturer:Trek, Inc.

The Model 20/20C-HS is a DC-stable, high-speed, highvoltage power amplifier used in industrial and research applications. It features an all-solid-state design for high slew rate, wide bandwidth and low-noise operation.  The fourquadrant, active output stage sinks or sources current into reactive or resistive loads throughout the output voltage range.  This type of output is essential to achieve an accurate output response and high slew rate demanded by a variety of loads such as highly capacitive or reactive loads. It is configured as a non-inverting amplifier.


Features and Benefits

Four-quadrant output for driving capacitive loads 

Closed loop system for high accuracy 

Short-circuit protected for equipment protection 

CE compliant for assured reliability 

All solid-state design for maintenance free operation 

DC-stable for programmable supply applications 

Low output noise for ultra-accurate outputs


Model 20/20C-HS 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) 

Input Voltage Range: 0 to ±10 V DC or peak AC Input Impedance 25 kW, nominal 

DC Voltage Gain: 2000 V/V

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

DC Offset Voltage: Better than ±2 V 

Output Noise: Less than 1.5 V rms*

Slew Rate (10% to 90%, typical):Greater than 800 V/µs

Large Signal Bandwidth(1% distortion):DC to greater than 5.2 kHz (The unit will trip when maximum is reached)

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

Stability:  Drift with Time Less than 50 ppm/hr, noncumulative    

            Drift with Temp Less than 100 ppm/°C


Voltage Monitor

Ratio: 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* 

Output Impedance: 47 W 


Current Monitor 

Ratio: 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* 

Bandwidth (-3dB): DC to greater than 20 kHz 

Output Impedance: 47 W 


Features 

High-Voltage On/Off: Local Individual push-button switch    

          Remote TTL compatible input. TTL high (or open) turns off high-voltage output. TTL low turns on highvoltage output.

Dynamic Adjustmen: Graduated 1-turn potentiometer is used to optimize the AC response for various load parameters 

Limit/Trip: Mode Switch selectable for either limit or trip. Graduated 1-turn potentiometer is used to adjust limit or trip level from 0 to 100% peak current. There is one LED indicator and one BNC connector 

Trip Status Indicator and Connector: An indicator will illuminate and a BNC will provide a TTL low when the high-voltage is disabled due to the output current exceeding the current trip level, the detection of a highvoltage power supply fault, removal of one of the panels, or if the 20/20C-HS is out of regulation for greater than 500 ms.

 Out of Regulation Status:Illuminates and a TTL low is provided when unit fails to produce required HV output such as during a current limit


Mechanical 

Dimensions: 279 mm H x 482 mm W 654 mm D (11” H x 19” W x 25.75” D)

Weight: 24.9 kg (55 lb)

HV Connector: Caton High Voltage Connector

BNC Connectors: Amplifier Input, Voltage Monitor, Current Monitor, Remote High Voltage ON/OFF, Out of Regulation Status, Fault/Trip Status Operating


Conditions

Temperature: 0°C to 40°C (32°F to 104°F) 

Relative Humidity: To 85%, noncondensing 

Altitude: To 2000 meters (6561.68 ft.) 


Electrical

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

AC Line Receptacle: Standard IEC 320 three-prong AC line connector 

Power Consumption: 1000 VA, maximum


Supplied Accessories

Operators’ Manual PN: 23461

HV Output Cable PN: 43466

Line Cord, Spare Fuses PN: N5011.  destination Selected per geographic