Low voltage varistor configuration

Details Low voltage varistor configuration Low voltage varistor configuration

1977-10-07

1982-12-14

Kucia, R. R.

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

338 22R, H03K 1730

Patent

active

043640214

ABSTRACT:
Metal oxide varistor structures having a low breakdown voltage, low leakage current, high values of alpha, operational stability, and methods of making the same are disclosed. In accordance with one embodiment of the invention relating to metal oxide varistor structures, at least one of the planar surfaces of a varistor disk, for example, is provided with a recessed region for increasing the electric field intensity in the region of the recess and hence reducing the breakdown voltage of the varistor disk without altering the structural integrity of the disk. Methods for making varistor structures with one or more recesses on one or more surfaces of the varistor structures are also disclosed.

REFERENCES:
patent: 2959504 (1960-11-01), Ross
patent: 2989713 (1961-06-01), Warner
patent: 3061739 (1962-10-01), Stone
patent: 3195091 (1965-07-01), Kujawa
patent: 3401318 (1968-09-01), Jensen
patent: 3546540 (1970-12-01), Bhola
patent: 4069465 (1978-01-01), Kouchich
patent: 4103274 (1978-07-01), Burgess

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