Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent
1980-05-09
1982-02-09
Adams, Russell E.
Electrical transmission or interconnection systems
Plural supply circuits or sources
Substitute or emergency source
307 71, 320 16, 365229, H02J 700, H02J 900
Patent
active
043151620
ABSTRACT:
A reserve power supply for providing backup power to a computer system includes a first battery and a second battery which are switchably interconnected in series or parallel by a switch means. When the batteries are connected in parallel they may be charged by a primary power supply which normally drives the computer system. When the batteries are connected in series they provide power to the computer when the primary power supply fails. This association with the primary power supply and the computer system is effected by a coupling circuit of the reserve power supply. The reserve power supply further includes an indicator circuit which visually and audibly signals when the batteries are providing power to the computer system. The reserve power supply further includes an electrical circuit which connects the voltage from one of the batteries to a second voltage output of the primary power supply and a second voltage input of the computer system. This electrical circuit also converts the voltage from the one battery into a plurality of other voltages for use by the computer system.
REFERENCES:
patent: 4081738 (1978-03-01), Roller
patent: 4143283 (1979-03-01), Graf et al.
patent: 4232377 (1980-11-01), Tallman
patent: 4255697 (1981-03-01), Buhler
Adams Russell E.
Control Technology, Incorporated
Gilbert III E. Harrison
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