Relay protection circuit and controlling method thereof having relatively better effectiveness for suppressing DC ARC
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United States of America Patent
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Aug 24, 2010
Grant Date -
Sep 20, 2007
app pub date -
Mar 5, 2007
filing date -
Mar 17, 2006
priority date (Note) -
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Abstract
The provided relay system includes a load having a first terminal and a second terminal, a relay coupled to a common ground and the first terminal of the load and a relay protection circuit eliminating an arc generated by the relay. The relay protection circuit has an energy storage element with a first terminal coupled to the first terminal of the load and a second terminal and electrically connected to the relay in parallel for storing and releasing an electrical power, and a high-impedance element coupled to the second terminal of the load to cause the energy storage element to have a relatively speedy charge and a relatively slow discharge.
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