Zinc oxide varistor having reduced edge current density

Details Zinc oxide varistor having reduced edge current density Zinc oxide varistor having reduced edge current density

1982-09-27

1984-05-29

Albritton, C. L.

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

361127, H01C 712

Patent

active

044518153

ABSTRACT:
A zinc oxide varistor disc is provided with one or more circumferential recesses in its rim to reduce the current density at the edges of the electrodes on the opposed disc faces, which electrodes are of a lesser diameter than the varistor disc. It has been discovered that optimum results are achieved when the diameter at the bottom of the recess is somewhat less than the diameter of the electrodes.

REFERENCES:
patent: 3863193 (1975-01-01), Matsuura et al.
patent: 4169071 (1979-09-01), Eda et al.

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