04849700 is referenced by 162 patents and cites 3 patents.

A device for detecting the residual capacity of a battery comprises a battery current measuring circuit for measuring battery current, a battery voltage measuring circuit for measuring battery voltage, a converting circuit for converting the measured current into a voltage value, based on the internal impedance of the battery, and a comparator circuit for comparing the conversion voltage value with the measured voltage. When the measured voltage is smaller than the conversion voltage value, the comparator circuit operates a battery residual-capacity detect signal indicating that the residual capacity of the battery is small.

Title
Device for detecting residual capacity of battery
Application Number
7/168233
Publication Number
4849700
Application Date
March 15, 1988
Publication Date
July 18, 1989
Inventor
Yuichi Saitoh
Tokyo
JP
Shizuo Morioka
Tokyo
JP
Agent
Finnegan Henderson Farabow Garrett & Dunner
Assignee
Kabushiki Kaisha Toshiba
JP
IPC
G01N 27/46
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