Means for preventing unintended powering of a first power over Ethernet controller
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United States of America Patent
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Aug 4, 2009
Grant Date -
Aug 17, 2006
app pub date -
Apr 23, 2006
filing date -
Jan 31, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Power sourcing equipment comprising: a power input; an output port; a control circuit comprising a means for sensing that a voltage component of power received at the power input is above a pre-determined threshold; a non-uniform signal source; an impedance associated with the non-uniform signal source; and an electronically controlled switch responsive to the control circuit, the electronically controlled switch being arranged to switchably operatively connect the impedance to at least momentarily be seen across the output port; the control circuit being operative responsive to an output of the means for sensing to operatively connect the impedance via the operation of the electronically controlled switch; the electronically controlled switch being operative to disconnect the impedance from being seen across the output port in the absence of the indicative output.
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