Patent · US Expired

Battery manager

US5223748A · kind A · utility

5Cited by

6References

6Claims

0Family size

Assignee

Dallas Semiconductor Corporation · US

Inventors

Eric W. Mumper · Carrollton, US
Donald R. Dias · Carrollton, US
Hal Kurkowski · Dallas, US

Key dates

Filing date	Dec 11, 1990
Grant date	Jun 29, 1993
Priority date	—
Expiry date	Dec 11, 2010

Classification

Technology area (CPC G)Physics
CPC primaryG01R31/3648
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Battery monitor (100) with a transient pull down (172) for backup batteries which is active during power up and prevents the feedthrough charging of low or dead batteries causing a spurious power fail indication.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.