System for indicating a low battery condition

A system for accurately predicting impending battery failure in battery powered electronic and electrical devices. The system continually monitors changes in battery voltage responsive to load changes and calculates a ratio of the change in voltage to the change in load. When the ratio exceeds a cer...

Full description

Saved in:
Bibliographic Details
Main Authors STEWART; GREGORY N, STARTUP; WARREN W
Format Patent
LanguageEnglish
Published 15.11.1994
Edition5
Subjects
CALCULATING
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
COMPUTING
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
ELECTRICITY
GENERATION
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
SYSTEMS FOR STORING ELECTRIC ENERGY
TESTING
Online AccessGet full text

Cover

More Information
Summary:A system for accurately predicting impending battery failure in battery powered electronic and electrical devices. The system continually monitors changes in battery voltage responsive to load changes and calculates a ratio of the change in voltage to the change in load. When the ratio exceeds a certain threshold value, indicating that the impedance of the battery has risen to near its final value, a user warning indication is generated.
Bibliography:Application Number: US19930046428