Ceramic resistor, production method thereof, neutral grounding r

Details Ceramic resistor, production method thereof, neutral grounding r Ceramic resistor, production method thereof, neutral grounding r

1996-03-25

1998-06-09

Walberg, Teresa J.

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

338 20, 338 21, 338204, 338 22R, H01C 710

Patent

active

057641293

ABSTRACT:
A ceramic resistor includes zinc oxide as a main component, and as essential components, aluminum oxide 3.0-40 mol %, magnesium oxide 2.0-40 mol %, silicon oxide 0.1-10 mol %, and at least one kind of compound 0.005-0.5 mol %, selected from a group consisting of calcium oxide, strontium oxide and barium oxide, and has a positive temperature coefficient of resistance. A neutral grounding resistor and a gas circuit breaker, each using the above-mentioned ceramic resistors, are disclosed.

REFERENCES:
patent: 1509493 (1924-02-01), Slepian
patent: 2892988 (1959-06-01), Schlusterius et al.
patent: 2933586 (1960-04-01), Schusterius
patent: 3227983 (1966-01-01), Braun
patent: 4041436 (1977-08-01), Kouchich et al.
patent: 4527146 (1985-07-01), Kanai et al.
patent: 4551268 (1985-11-01), Eda et al.
English Tranlation of JP 6-168802, Tanaka et al.

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