Fail-safe inline power in a wired data telecommunications network
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United States of America Patent
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Apr 3, 2012
Grant Date -
Nov 23, 2006
app pub date -
May 18, 2005
filing date -
May 18, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A dynamic fuse element is provided in an inline power circuit to provide an electrical current protection level that varies in accordance with allocated current levels and that can respond to current spikes that are not expected. The dynamic fuse element comprises a processor aware of allocated current levels and an inline switch controlled by the processor to turn OFF in the event of a fault. In another aspect ferrite fuses may be provided for relatively low-current applications. In yet another aspect test fuses may be placed on the circuit board to verify that fuses used in manufacture operate at a certain current level.
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