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:
Aug. 27, 2002
Filed:
Apr. 13, 2001
Hubert Rothleitner, Villach, AT;
Michael Breunig, Villach, AT;
Colm Peter Boran, Novi, MI (US);
David James Tippy, Farmington Hills, MI (US);
Myron Ihor Senyk, Rochester Hills, MI (US);
Paul Mario Camilleri, Brownstown, MI (US);
Ralf Kissling, Novi, MI (US);
Timothy John Blind, Ann Arbor, MI (US);
Vincent Colarossi, Dearborn Heights, MI (US);
Other;
Abstract
A method and system for measuring the capacitance of a backup power source in a backup power supply system is disclosed by the present invention. The regulated output voltage is set to a nominal regulated output voltage during normal operation and then adjusted to a predetermined regulated output voltage during a capacitance measurement. A pair of predetermined loads is connected to the backup power source in consecutive order for discharging energy from the backup power source. A counter is used to count the time that elapses before the regulated output voltage reaches the lower regulated output voltage or the backup power supply system begins regulating. The resulting counts are used by a main control unit, together with several other known values, to determine the capacitance of the backup power source.