Voltage activated 2nd level safety circuit for permanent isolation
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United States of America Patent
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Feb 11, 2014
Grant Date -
Sep 6, 2012
app pub date -
Feb 14, 2012
filing date -
Mar 4, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A voltage activated 2nd level safety circuit for permanent isolation having a current activated fuse useful for class III medical devices, military applications, and any other passive loads. The battery system has a fuse current limiter and the current activated fuse maintain the fuse closed when a power cell, having a current sufficient to blow the fuse expeditiously, directs its current to the load. The power cell continues to direct its current to the load until the system detects an unacceptable battery or circuit condition. Once that unacceptable condition exists and is detected, a fuse blowing circuitry allows the power cell's current to expeditiously blow the current activated fuse. In response to the blown current activated fuse, the system's isolation switch(es) open as well to establish a permanent isolated battery.
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