Power supply topology

Details Power supply topology Power supply topology

2011-07-12

2011-07-12

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

One cell or battery charges another

C320S128000, C307S066000

Reexamination Certificate

active

07977911

ABSTRACT:
A power supply system can include a primary power supply coupled to an output, and a secondary power supply coupled to the output. The primary power supply provides power to the output when a voltage level of the secondary power supply is less than a first predetermined level. The secondary power supply provides power to the output when the voltage level of the secondary power supply is greater than the first predetermined level. The secondary power supply not only provides power to the output, but also charges the primary power supply when the voltage level of the secondary power supply is greater than a second predetermined level that is greater than the first predetermined level.

REFERENCES:
patent: 4883724 (1989-11-01), Yamamoto
patent: 5212431 (1993-05-01), Origuchi
patent: 5389825 (1995-02-01), Ishikawa
patent: 5686766 (1997-11-01), Tamechika
patent: 6215272 (2001-04-01), Ohara et al.
patent: 6888339 (2005-05-01), Travaglini et al.

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