Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1995-04-03
1997-05-20
Wong, Peter S.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 48, H02J 700
Patent
active
056315414
ABSTRACT:
An electronic appliance such as a digital audio disk player in which either an external power source, or a secondary cell is employed as a power source, includes a signal reproducing unit, a recharging unit, a judging unit, a measuring unit, and a controller. To the signal reproducing unit, an operation power source voltage is applied from the external power source, or the secondary cell. The voltage from the external power source is applied to the recharging unit so as to recharge the secondary cell. The judging unit judges whether or not the voltage from the secondary cell is applied to the signal reproducing unit. The measuring unit measures a time period during which the voltage from the secondary cell is applied to the signal reproducing unit when the judgement result obtained from the judging unit indicates that the voltage from the secondary cell is applied. The controller sets a recharging time period based on the measurement value obtained from the measuring unit when the signal reproducing unit is under non-operation condition, and controls the recharging unit only for the set recharging time period, so that the recharging operation of the secondary cell is performed by the recharging unit.
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Chung Looi T.
Kabasawa Kenichi
Keang Lau S.
Ogawa Shigeho
Maioli Jay H.
Sony Corporation
Toatley , Jr. Gregory J.
Wong Peter S.
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