Battery back-up control circuit for battery backed up rack mount

Details Battery back-up control circuit for battery backed up rack mount Battery back-up control circuit for battery backed up rack mount

1992-10-26

1995-07-11

Gaffin, Jeffrey A.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

340501, 340517, 361690, H02B 100

Patent

active

054323860

ABSTRACT:
Methods and apparatus are set forth for automatically controlling a battery back-up unit (BBU) associated with a rack mounted device, under rack A.C. power outage, rack Emergency Power Off (EPO) and normal rack power down conditions. The methods and apparatus contemplated by the invention deactivate the device BBU whenever either a rack Emergency Power Off (EPO) or normal rack power down condition exists so that BBU power is not unnecessarily drained. The invention features the ability to perform the aforestated device BBU control function without having to redesign a rack enclosure, and without having to use or generate rack signals other than "non-specific" signals, defined as signals that are being generated and used for purposes other than device level BBU switching in a commercially available rack enclosure.

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patent: 5216579 (1993-06-01), Basara et al.
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