Peak power management and active decoupling arrangement for span-powered remote terminal access platforms
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United States of America Patent
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Jul 12, 2005
Grant Date -
Oct 2, 2003
app pub date -
Apr 1, 2002
filing date -
Apr 1, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A power management circuit for a remote access platform extracts power from a wireline for powering a ring generator that generates a ringing voltage signal that is distributed to a plurality of subscriber circuits. A power-limited voltage converter steps up the wireline voltage to a higher 'isolating' voltage, charging a capacitor coupled to the ring generator. A monitor circuit reduces the power that the power-limited voltage converter can draw, if the wireline voltage drops too low. This prevents the wireline voltage from collapsing should the remote terminal be deployed at a distance from wireline voltage source (the central office) greater than its specified capability.
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