Electrical resistors – Resistance value responsive to a condition – Current and/or voltage
Patent
1995-12-07
1998-04-21
Walberg, Teresa J.
Electrical resistors
Resistance value responsive to a condition
Current and/or voltage
338 22R, 338 20, H01C 710
Patent
active
057422230
ABSTRACT:
An electrical device in which a first resistive element which is composed of a first electrically non-linear composition is in electrical contact, and preferably in physical and electrical contact, with a second resistive element which is composed of a second composition which has a resistivity of less than 100 ohm-cm. The first composition has a resistivity of more than 10.sup.9 ohm-cm and contains a first particulate filler. The second composition contains a second particulate filler which (a) is magnetic and electrically conductive, and (b) is aligned in discrete regions in the second polymeric component. The device also contains first and second electrodes which are positioned so that current can flow between the electrodes through the first and second resistive elements. Devices of the invention have relatively low breakdown voltages and can survive high energy fault conditions.
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Boyer Charles A.
Bukovnik Rudolf R.
Simendinger, III William H.
Burkard Herbert G.
Easthom Karl
Gerstner Marquerite E.
Raychem Corporation
Walberg Teresa J.
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