Voltage-dependent resistor

Details Voltage-dependent resistor Voltage-dependent resistor

1975-04-02

1976-12-21

Albritton, C. L.

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

252518, H01C 712

Patent

active

039991598

ABSTRACT:
A voltage-dependent resistor comprising a sintered body consisting essentially of ZnO, as a main constituent, and, as additives, bismuth oxide (Bi.sub.2 O.sub.3), cobalt oxide (CoO) and/or manganese oxide (MnO) and/or aluminum oxide (Al.sub.2 O.sub.3) and gallium oxide (Ga.sub.2 O.sub.3) and/or indium oxide (In.sub.2 O.sub.3) with electrodes applied to the opposite surfaces of the sintered body. This voltage-dependent resistor has a low C-value, a high n-value, high power dissipation for surge energy and a high stability to a high D.C. load. Other additives such as titanium oxide (TiO.sub.2), chromium oxide (Cr.sub.2 O.sub.3) and nickel oxide (NiO) improve the voltage dependent property of the sintered body.

REFERENCES:
patent: 3611073 (1971-10-01), Hamamoto
patent: 3682841 (1972-08-01), Matsuoka et al.
patent: 3760318 (1973-09-01), Masuyama
patent: 3806765 (1974-04-01), Matsuoka et al.
patent: 3863193 (1975-01-01), Matsuura et al.

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