Non-magnetic Trimmer Capacitors
Voltronics Corporation has produced non-magnetic
trimmer capacitors for over 25 years. The increasing
applications have impelled the company to mount an
active, continuing engineering effort in this field.
CRYOGENIC TRIMMER CAPACITORS
Most of these non-magnetic trimmer capacitors can
be used and even tuned at temperatures down to 4
O
K. They are specially made and have been used in
many NMR applications. We can design parts which
will work for a variety of special situations. Consult
the factory with your requirements.
To order parts for cryogenic applications, add “K” to
the part number, i.e., NMTM120CK.
We can’t test at these temperatures. Each application
is different, but consult us if there is a problem which
may have already been solved.
NON-MAGNETIC PROPERTIES
The severe requirement for non-magnetic properties is
such that in a 14,000 Gauss field the capacitors must
not distort the useable field by more than one part per
600 million. To achieve this, no materials or platings
exhibiting measurable magnetism, such as stainless
steel or nickel, are used. Commercial brass is un-
acceptable. Typical magnetic susceptibility is 40 x 10
-6
CGS units. Voltronics’ strict traceability system and its
testing for minute magnetism insure this essential
parameter.
SEAL
Most of the capacitors are internally sealed so that they
can withstand immersion in flux and cleaning solvents
without leaking.
SPLIT STATOR AND
DIFFERENTIAL STYLES
Non-magnetic versions of these styles are available.
Consult the factory for detailed specifications.
SPECIAL DESIGNS
Most of the parts shown in this catalog were developed
for a specific customer application. Many other mounting
configurations are available. Call the factory to discuss
your special needs.
100 FORD ROAD DENVILLE, NEW JERSEY 07834 PHONE: 973-586-8585
http://www.voltronicscorp.com e-mail: info@voltronicscorp.com
FAX: 973-586-3404
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