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Voltage Divider C637series - ET Enterprises


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photomultiplier voltage divider C637 series
1 description
Voltage dividers provide the set of voltages required to operate a photomultiplier.
The C637 series of voltage dividers is designed for 30 mm diameter, 11 stage photomuiltiplier tubes. Built onto an epoxy glass circuit board using a combination of surface mount and leaded components, the C637 series covers a range of applications with the following variants:
• C637A uniform voltage divider for general purpose
applications
^ C637B divider specifically for box and grid photomultipliers
 C637C tapered distribution forpulsed lightapplications
Terminal posts T1 to T4 are provided for solder connection to high voltage power supply and signal leads. Leads to customer specification, with or without connectors, are available at an extra cost. It is recommended that any electromagnetic screening around the photomultiplier tube is connected to photocathode potential via terminal post T5.
Examples of the Electron Tubes range of Voltage Dividers
C637 voltage dividers are available as a board only, or mounted 5 outline drawing (mm)
on a B14B socket, either unflanged or flanged.
mounting option O (ie. C637AO)
2 applications
The C637 series is suitable for the following applications using 30 mm diameter, 11 stage photomultiplier tubes:
• analogue
• pulsed light
• photon counting
3
mounting option S (ie. C637AS)
• compact
• lowcost
• high reliability
 positive or negative high voltage
• ac/dc coupled versions ofthe negative option
• tapered distribution option for pulsed applications
4
ecification
35 max.
operating position
any
weight:
board only
4g
with socket, no flange
10g
with socket and flange
14g
resistor tolerances
±2%
operating temperature range
-25°Cto+70°C
humidity (non-condensing)
93% RH maximum at 30 °C
atmospheric pressure range
100kPa(1 bar) to
68kPa (0.68 bar)
applied voltage
1850 V maximum (subject
to not exceeding max. rating
of photomultiplier tube)
mounting option F (ie. C637AF)
2 holes, 4 dia.
35 crs
V
30 dia.

pageCatalog pdf di En 2012-02-07-16