05804894 is referenced by 114 patents and cites 3 patents.

A low voltage battery pack monitoring circuit for a battery powered electronic device is disclosed. The circuit utilizes low battery and power failure set point voltages and first and second comparison circuits to compare voltage across the device battery pack to the set point voltages. If the battery pack output voltage falls below the low battery pack set point voltages, the first comparison circuit sends a signal to a microprocessor causing a low battery indicator light to be actuated. If the battery pack output voltage continues to decrease below the power failure set point voltage, the second comparison circuit includes a comparator which changes output state and turns off selected electronic systems of the device and the device enters a suspend mode. The low battery pack set point voltage value and the power failure set point voltage value are determined using an empirical look up table.

Title
Low voltage battery pack monitoring circuit with adjustable set points
Application Number
8/699093
Publication Number
5804894
Application Date
August 16, 1996
Publication Date
September 8, 1998
Inventor
Richard Shoobridge
Akron
OH, US
Randal A Leeson
Stow
OH, US
Agent
Watts Hoffman Fisher & Heinke Co LPA
Assignee
Telxon Corporation
OH, US
IPC
H02J 7/00
H01H 35/00
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