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Battery Charger and Checker Circuit for Real Time Clock

IP.com Disclosure Number: IPCOM000040936D
Original Publication Date: 1987-Apr-01
Included in the Prior Art Database: 2005-Feb-02

Publishing Venue

IBM

Related People

Authors:
Riggio, SR Steinmetz, MJ [+details]

Abstract

A technique is described whereby an electrical circuit, under microprocessor control, provides battery checking and charging capability. The circuit is unique in that the checking and charging capabilities are performed while the battery is supplying power to a real time clock, without affecting the accuracy of this clock.