Power supply device for protective relay

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11689194
APP PUB NO 20210006239A1
SERIAL NO

17026909

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Abstract

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The present disclosure relates to a power supply device for a protective relay. The power supply device comprises a power circuit for supplying a power to the control circuit, wherein the power circuit includes: a semiconductor switch element having an input terminal connected to a first node for receiving a direct current, and an output terminal connected to a reference node, wherein the reference node has a voltage lower than a voltage of the first node; and a first voltage drop element disposed between the first node and a second node, wherein the second node is connected to a switching terminal of the semiconductor switch element.

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Patent Owner(s)

Patent OwnerAddress
LS ELECTRIC CO LTD127 LS-RO DONGAN-GU ANYANG-SI GYEONGGI-DO 14119

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lee, Young-Joo Anyang-si, KR 34 179

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