Ring boost circuit to extend ringing range of telephone SLICs
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United States of America Patent
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-
Sep 6, 2005
Grant Date -
Apr 10, 2003
app pub date -
Aug 2, 2002
filing date -
Oct 5, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A ring boost circuit has a first switching device coupled to a ring node. The first switching device is responsive to a ring operation. A charge pump is connected to the ring node, and the charge pump provides a voltage offset to enhance a differential voltage between the ring node and a tip node when the first switching device is activated during the ring operation.
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- Non-US Classification not provided for expired patents
Cited Art Landscape
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