The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 01, 2001
Filed:
Mar. 24, 1999
Noboru Furukawa, Ayase, JP;
Keiji Suzuki, Fujisawa, JP;
International Business Machine Corporation, Armonk, NY (US);
Abstract
Disclosed is an integrated uninterruptable power supply (UPS) for a computer powered by a commercial power supply. The uninterruptable power supply is operative to feed power from a normal power supply to a first load to be operated at a first DC voltage and a second DC voltage that is lower than the first DC voltage. If a characteristic of the normal power supply is deviated from a defined value, the UPS of the present invention will continue feeding power from a battery power supply to the first load. The uninterruptable power supply includes a power supply unit, having an output connected to the first load, for converting a voltage of the normal power supply to the first DC voltage and for outputting the same. The UPS also includes a first voltage converter having an input connected to the battery and an output connected to the first load, for converting an output voltage of the battery to the second DC voltage and for outputting the same. If the normal power supply is within the defined value, the first voltage converter waits in a no-load state.