US 9,812,897 B2 | ||
Apparatus, system, and method for providing power redundancy to a device designed to draw power from a single external power adapter | ||
Paulo Rodrigues, Surrey (GB) | ||
Assigned to Juniper Networks, Inc., Sunnyvale, CA (US) | ||
Filed by Juniper Networks, Inc., Sunnyvale, CA (US) | ||
Filed on Jul. 5, 2013, as Appl. No. 13/936,056. | ||
Claims priority of application No. 1308107.0 (GB), filed on May 5, 2013. | ||
Prior Publication US 2014/0328094 A1, Nov. 6, 2014 | ||
Int. Cl. H02J 9/00 (2006.01); H02J 7/00 (2006.01); H02J 9/06 (2006.01); H02J 3/14 (2006.01); H02J 1/10 (2006.01); H02J 4/00 (2006.01); H02M 1/10 (2006.01) |
CPC H02J 9/06 (2013.01) [H02J 1/10 (2013.01); H02J 3/14 (2013.01); H02J 4/00 (2013.01); H02M 1/10 (2013.01)] | 20 Claims |
1. An apparatus comprising:
a single physical enclosure that houses:
a plurality of power inputs configured to receive direct current from a plurality of external power adapters, which are external
to the single physical enclosure, that convert alternating current to direct current, the plurality of external power adapters
comprising a primary external power adapter and at least one backup external power adapter;
a single power output configured to provide direct current to a device that is external to the single physical enclosure and
configured to draw direct current from a single external power adapter;
a switching mechanism comprising a portion of memory and a communication infrastructure that both monitor power provided via
the plurality of external power adapters and continuously supply power to the device by:
detecting when the primary external power adapter is operational by detecting when direct current is received at a power input
connected to the primary external power adapter;
detecting when the primary external power adapter fails by detecting when no direct current is received at the power input
connected to the primary external power adapter;
supplying direct current from the primary external power adapter to the power output when the primary external power adapter
is operational and supplying direct current from the backup external power adapter to the power output when the primary external
power adapter fails.
|