Varistor structures

Details Varistor structures Varistor structures

1990-06-26

1992-05-19

Lateef, Marvin M.

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

361127, H01C 710

Patent

active

051152215

ABSTRACT:
A multilayer varistor has alternating layers of ceramic material and electrode material. The layers are interleaved with each ceramic material layer sandwiched between two electrode material layers. One end portion of each electrode layer extends to an end face of the varistor where it is in electrical contact with an end terminal of the varistor. The other end of the layer is spaced by ceramic material from the opposite end terminal of the varistor. Thus alternate electrode material layers are in electrical communication with one and the other end terminal of the varistor unit. The ceramic material layer between each two electrode layers preferably has a thickness dimension less than 30.0 microns, or it may be formed by deposition of a powder suspension and subsequent heat treatment to provide a dense continuum of ceramic material of low porosity.

REFERENCES:
patent: 3598763 (1971-08-01), Matsucka et al.
patent: 3663458 (1972-05-01), Matsuyama et al.
patent: 3863193 (1975-01-01), Matsura et al.
patent: 4045374 (1977-08-01), Nagasawa et al.
patent: 4148135 (1979-04-01), Sakshaug et al.
patent: 4290041 (1981-09-01), Utsumi et al.
patent: 4607316 (1986-08-01), Wada et al.
patent: 4811164 (1989-03-01), Ling et al.
patent: 4959262 (1990-09-01), Charles et al.

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