Varistor fitted with degradation alarm

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9583296
APP PUB NO 20160027603A1
SERIAL NO

14775669

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Abstract

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A varistor provided with a degradation alarm function includes a first resistance element, an indicating element coupled in series with the first resistance element, a first thermal fuse coupled in parallel with a pair of the first resistance element and the indicating element, a varistor element coupled in parallel with the first thermal fuse, and a second resistance element disposed in an interconnect line between the first thermal fuse and the varistor element. A fusing temperature of the first thermal fuse is set such that the fuse is blown out at temperatures not lower than a temperature increased by heating when a current larger by a certain value than the maximum current rating of the varistor element passes through the fuse. The second resistance element is larger in resistance than the first resistance element.

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Patent Owner(s)

  • PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Satou, Masaaki Hokkaido, JP 26 137

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