Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent
1990-01-05
1992-07-07
Gaffin, Jeffrey A.
Electrical transmission or interconnection systems
Plural supply circuits or sources
Substitute or emergency source
307 64, 36441302, H02J 906
Patent
active
051285525
ABSTRACT:
A method and system for providing a reliable power supply for a personal health monitor that operates on power provided by a first power source or a second power source and that includes an isolation relay that disconnects the personal health monitor from the first power source in the absence of a supply of power. A controller provides that the personal health monitor is started from the second power source and thereafter connected to the first power source and operated for a first set of one or more activities, disconnected from the first power source and operated from the second power source for a second set of one or more activities, and, upon the condition of a disruption of the first power source, one or more components of the personal health monitor are disconnected from the second power source, and the isolation relay is supported by the second power source to enable the personal health monitor to be restarted from the first power source.
REFERENCES:
patent: 4508974 (1985-04-01), Henderson
patent: 4677311 (1987-06-01), Morita
patent: 4728808 (1988-03-01), Bet-Esh et al.
Fang William
Qian Charles
Buddy Systems, Inc.
Gaffin Jeffrey A.
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