Low voltage ceramic varistor

Details Low voltage ceramic varistor Low voltage ceramic varistor

1982-07-14

1984-03-13

Barr, Josephine

Compositions

Electrically conductive or emissive compositions

Metal compound containing

252519, 252520, 252521, 252512, 338 20, 338 21, H01B 106

Patent

active

044366507

ABSTRACT:
The breakdown voltage of a zinc oxide varistor is lowered by increasing the grain size of the zinc oxide using Al.sup.+3 as a zinc oxide grain growth promoting agent and the varistor's resistance to high energy electrical surges is increased by an grain boundary barrier layer stabilizer such as Na.sup.+, K.sup.+, Rb.sup.+, or Cs.sup.+.

REFERENCES:
patent: 3538022 (1970-11-01), Bowman
patent: 3670216 (1972-06-01), Masuyama et al.
patent: 3962144 (1976-06-01), Matsuura et al.
patent: 4069061 (1978-01-01), Nagasawa et al.
patent: 4160748 (1979-07-01), Yodogawa et al.

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