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SPELLMAN HIGH VOLTAGE ELECTRONICS CORPORATION
uX
50W/65W/75W X-RAY
GENERATOR
Grid Bias Option (GB):
Plug-n-Play compatibility for Oxford’s Apogee X-Ray Tube
Spellman’s Grid Bias Option for the uX Series is specifically
designed for popular commercially available grid bias X-Ray
tubes. The Grid Bias voltage is developed via the use of sepa-
rate integrated high frequency switching circuit, providing maxi-
mum flexibility and control. The Grid Bias output is a voltage
regulated, current compliant topology ideally suited for Wehnelt
electrode applications. Arc and short circuit protection of the
Grid Bias output prevents any damage due to transient events
or installation errors.
Tracking Mode Operation
Functioning in tracking mode the voltage monitor
(0-10Vdc = 0 to 50kV) of the main high voltage output
is internally connected to the Grid Bias programming input
(0-10Vdc = 0 to -300Vdc of Grid Bias). Connected in this
manner the Grid Bias output will track in a linearly
proportional fashion the setting of the main kV output.
A multiturn potentiometer limits the maximum magnitude
of Grid Bias output applied to the X-Ray tube, providing
unparalleled flexibility.
The output of the Grid Bias option is provided via an
auxiliary two position Phoenix Contact terminal block, the
mating connecter is provided.
GRID BIAS SPECIFICATIONS
Output Voltage: 0 to -300Vdc
Output Current: 0.25mA, maximum
Load Regulation: 1% of output voltage, no load to full load
Line Regulation: 1% for a ±10% change in input voltage
Ripple: 1% of maximum rated voltage
uX with Grid Bias Option.
Shown with Oxford Apogee X-Ray Tube
(not included)
Note: Units ordered with the
GB Option will be provided with the XCC Option
for proper high voltage cable compatibility.
Main Control Screen
Communication Screen
Filament Status Screen
Digital Interface
The uX features a standard USB, RS-232 and Ethernet digital
interface. Utilizing these standard digital interfaces can
dramatically simplify power supply interfacing requirements
saving the user both time and money, while enhancing func-
tionality and overall capabiity. Spellman provides a GUI with
the uX that allows the customer to both customize operational
features of the uX while also providing basic power supply
operational features. Details of the uX’s digital interface
capability are described in detail in the uX manual.
Closeup showing digital
interface connectors
Corporate Headquarters
Hauppauge, New York USA
+1-631-630-3000 FAX: +1-631-435-1620
e-mail: sales@spellmanhv.com
www.spellmanhv.com
128108-001 REV. A
Spellman High Voltage is an ISO 9001:2008 and ISO 14001:2004 registered company
Copyright © 2014 Spellman High Voltage Electronics Corp.
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