Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation
Patent
1998-09-21
2000-03-14
Sherry, Michael J.
Electricity: electrical systems and devices
Safety and protection of systems and devices
High voltage dissipation
361118, H02H 100
Patent
active
060381191
ABSTRACT:
An overvoltage protection device includes a first electrode member having a first substantially planar contact surface and a second electrode member having a second substantially planar contact surface facing the first contact surface. A wafer formed of varistor material and having first and second opposed, substantially planar wafer surfaces is positioned between the first and second contact surfaces with the first and second wafer surfaces engaging the first and second contact surfaces, respectively. The contact surfaces may apply a load to the wafer surfaces. Preferably, the electrode members have a combined thermal mass which is substantially greater than a thermal mass of the wafer. The wafer may be formed by slicing a rod of varistor material. The device may include a housing including the first substantially planar contact surface and a sidewall, the housing defining a cavity within which the second electrode is disposed.
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Data Book Library 1997, Passive Components, Siemens Matsushita Components, 1997, pp. 15-17, 26-32, 36-37, 39, 161, 166, 167, 169, 171-174.
Atkins Ian Paul
Ballance Robert Michael
Cornelius Jonathan Conrad
Kamel Sherif I.
Kizis John Anthony
Gerstner Marguerite E.
Sherry Michael J.
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