Electrical apparatus with higher durability against surges
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United States of America Patent
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Jul 22, 2014
Grant Date -
Mar 10, 2011
app pub date -
Mar 19, 2010
filing date -
Sep 9, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
An electrical apparatus, which is immovable in a facility, comprises plural electric circuits. Each electric circuit has one or more resistance elements and is connected to each input terminal connected a power source. The electric circuits are arranged positionally closely with each other. In each electric circuit, a desired functional circuit is connected in series to the resistance element, and a protection circuit is connected in series to the resistance element and connected in parallel with the functional circuit. A discharge member is provided in each electric circuit and arranged between each input terminal and the functional circuit. The discharge member includes a discharge gap which allows the discharge member to face with the discharge member of an adjacently arranged electric circuit.
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