Method and apparatus to ensure activation of a power distribution alarm monitoring circuit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Dec 4, 2008
app pub date -
Jun 1, 2007
filing date -
Jun 1, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Redundant load sharing power supplies may use lower amperage pilot fuses to monitor the condition of higher amperage main line fuses carrying load current. An alarm monitoring circuit is activated when the pilot fuse has blown. The load sharing characteristics of these supplies may proportion current such that the pilot fuse may not be blown when the main line fuse is missing or blown. An embodiment of the present invention provides a system for ensuring activation of a power distribution alarm monitoring circuit in a load sharing power application using multiple loads to draw current from the power inputs. A control circuit enables current to flow in a controlled manner to blow the pilot fuse to ensure activation of a power distribution alarm monitoring circuit. Ensuring activation of the alarm monitoring circuit allows accurate identification of a faulty supply and satisfies a required operations condition of many telecommunications systems providers.
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