Intelligent low battery detection circuit for a paging receiver
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United States of America Patent
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Dec 9, 1997
Issued Date -
N/A
app pub date -
Aug 18, 1993
filing date -
Mar 28, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A low battery condition is determined by sampling battery terminal voltage with a voltage comparator under light and heavy loading, and indicating a low battery condition when the rate of change of the sampled voltage or the rate of change of the internal resistance of the battery is greater than a predetermined limit.
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