Data communication network providing power and message information
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United States of America Patent
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-
Sep 15, 1992
Grant Date -
N/A
app pub date -
Mar 28, 1991
filing date -
Mar 28, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A data communications network for delivering power and communications over the same cable bundle includes a plurality of communications nodes wherein associated with each of the nodes is a transformer having a core, a primary winding and a secondary winding. The secondary winding has a centertap connection which either splits or merges the current in the secondary winding to eliminate net DC flux within the transformer. A DC/DC converter is also included for transforming the relatively high DC voltage of the cable down to a regulated supply potential for use by that node. The converter is coupled between the centertap of the transformer and the cable bundle. A power source provides the DC voltage distributed across the network and is coupled to the cable bundle via a centertap connection of another winding.
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