Skip to Content

High Voltage Solutions

XRM / XRF Series

Ac-Input Modular High Voltage Power Supplies

Compact AC-input supplies for regulated high voltage and low-power X-ray systems. XRM provides voltage and current control; XRF adds emission and filament controls for integrated X-ray tube operation.

Gamma XRM / XRF Series product
1.5-60 kVXRM output range
30-60 kVXRF output range
60 / 100 WPower classes
0-10 VRemote control

Key capabilities

  • Local or remote voltage and current control
  • Constant-voltage / constant-current regulation
  • Voltage and current monitoring
  • External interlock and arc/short protection
  • XRF emission, filament, and X-ray enable controls

Typical applications

  • X-ray systems
  • CRT and projection systems
  • Photomultiplier bias
  • Capacitor charging
  • Integrated low-power X-ray tube control

Standard model guide

ModelOutput voltage60 W current100 W current
XRM 1.50-1.5 kV40 mA66 mA
XRM 30-3 kV20 mA33 mA
XRM 50-5 kV12 mA20 mA
XRM 100-10 kV6 mA10 mA
XRM 150-15 kV4 mA6.6 mA
XRM 200-20 kV3 mA5 mA
XRM 30 / XRF300-30 kV2 mA3.3 mA
XRM 40 / XRF400-40 kV1.5 mA2.5 mA
XRM 50 / XRF500-50 kV1.2 mA2 mA
XRM 60 / XRF600-60 kV1 mA1.67 mA

Select XRM for general regulated high voltage or XRF for integrated X-ray tube operation. Choose the output voltage and 60 W or 100 W power class; add P or N to XRM model numbers for polarity. Contact Gamma with XRF tube voltage, current, and filament requirements.

Specifications

Electrical characteristics

Input105-125 VAC, 50-400 Hz standard through IEC 320-14 inlet; 195-245 VAC and 24 VDC ±10% versions available
Output voltageContinuously adjustable from zero to rated maximum
Power60 W or 100 W
Voltage regulationLine ±0.005%; load ±0.01%
Current regulationXRM: better than ±0.005% over the specified input range; XRF emission current: ±0.05% of specified range
Load regulationXRM: better than 50 µA for a 75% change in compliance voltage
Ripple0.05%
Temp. coefficient100 ppm/deg C from 0 to 60 °C
Stability0.01% per hour; 0.003% per 8 hours

Mechanical and interface

Dimensions6.157 H x 4.625 W x 11 L in
WeightXRM 10 lb; XRF 11 lb
Program I/O15-pin XRM or 25-pin XRF D-subminiature
HV outputRe-entrant bushing with mating shielded cable; customer-specified connector available
PackagingModular enclosure with silicone-encapsulated high voltage section
XRF filamentTB1 output adjustable from 0 to 3.5 VDC and zero to rated current; up to 12 W standard

Configuration and options

Integration

  • 0-10 V local or remote kV programming
  • 0-10 V local or remote current programming
  • XRM voltage/current monitors and HV interlock
  • XRF adds emission and filament programming/monitoring
  • XRF includes X-ray ON/OFF and optional TTL enable
  • Factory-set kV ramp available on XRF

Available options

  • Positive or negative XRM polarity; add P or N suffix
  • 195-245 VAC or 24 VDC input versions
  • TTL-compatible enable
  • Customer-specified high voltage connector
  • XRF filament voltage and current selected for the tube
  • Factory-set XRF high voltage ramp
  • RoHS-compliant version available
  • Higher-voltage and custom configurations available

Control interfaces

XRM models use a 15-pin J1 control connector. XRF models use a 25-pin J1 connector with additional emission and filament functions.

XRM J1 - 15-pin

PinFunction
1Current program
2Voltage program
3TTL enable - option
4Current monitor
5Internal voltage control
6High voltage interlock
7Voltage monitor
8Voltage meter - 1 mA full scale
9Internal current control
10Reference voltage
11-14Signal common
15Current meter - 1 mA full scale

XRF J1 - 25-pin

PinFunction
1Current program
2Voltage program
3TTL enable - option
4Current monitor
5Internal voltage control
6High voltage interlock
7Voltage monitor
8Voltage meter - 1 mA full scale
9Internal current control
10Reference voltage output
11-14Signal common
15Current meter - 1 mA full scale
16Filament voltage meter
17Filament voltage monitor
18Internal emission adjustment
19X-ray ON/OFF
20-21Signal common
22Filament current monitor
23Filament current meter
24Filament current program
25Emission-current program

Mechanical drawings

Dimensions are in inches unless otherwise noted. Contact Gamma to confirm the final enclosure and connector arrangement for your configuration.

XRM front view (left) / XRF front view (right)
XRM and XRF Series front dimensional drawings
XRM side view (left) / XRF side view (right)
XRM and XRF Series side dimensional drawings

XRM / XRF Series resources

Download the data sheet or contact Gamma for configuration assistance.