Battery charger

Details Battery charger Battery charger

1994-11-29

1997-03-25

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

H02J 700

Patent

active

056148062

ABSTRACT:
The battery charging system of the present invention charges the battery of a portable, multiple mode radiotelephone while the radiotelephone is operating. The radiotelephone generates a clock signal having varying on/off times dependent on the radiotelephone's mode. This mode can include an analog cellular mode or a digital cellular mode. The battery charger detects the clock signal's on/off times and changes the average charge current to compensate for one mode requiring a larger charge current.

REFERENCES:
patent: 5018188 (1991-05-01), Kowalski et al.
patent: 5113127 (1992-05-01), Hoffman et al.
patent: 5113128 (1992-05-01), Ohara et al.
patent: 5115182 (1992-05-01), Ehmke et al.
patent: 5150031 (1992-09-01), James et al.
patent: 5317249 (1994-05-01), Ford
patent: 5325040 (1994-06-01), Bogut et al.
patent: 5333176 (1994-07-01), Burke et al.
patent: 5422559 (1995-06-01), Hall et al.

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