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:
Mar. 17, 1998
Filed:
May. 31, 1996
Izuru Narita, Sagamihara, JP;
International Business Machines Corporation, Armonk, NY (US);
Abstract
An over discharge protection circuit for a rechargeable battery which prevents an over discharge of the battery in response to a current operating condition, even though the operational state of an electric/electronic apparatus is changed for the purpose of saving the power consumption. The over discharge protection circuit comprises a selector selecting a threshold voltage in response to the operating condition of the electric/electronic apparatus; a comparitor comparing the output terminal voltage of said battery with the threshold voltage selected by the selector; a switch opening or closing a power feed line along which the battery is powered; and a controller controlling the switch in response to the comparison result by the comparitor.