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1. (WO1997005668) BATTERY CHARGING SYSTEM

Pub. No.:    WO/1997/005668    International Application No.:    PCT/US1996/011992
Publication Date: Feb 13, 1997 International Filing Date: Jul 19, 1996
IPC: H01M 10/44
H02J 7/00
Applicants: MOTOROLA INC.
Inventors: FERNANDEZ, Jose, Maria
MAIERHAFER, Daniel, Leon
Title: BATTERY CHARGING SYSTEM
Abstract:
A battery charging system (10) includes a charger (12), power supply (14), electrical device (16), external battery (18), and peripheral device (20). The charger (12) provides connections between the various components such that the electrical device (16), which is a portable electronic device, may communicate with the peripheral device (20). The components are kept small by providing the power supply (14) with a feedback input (26). The power supply generates a voltage output (24) which is at a preselected differential above the feedback level, thus minimizing overhead voltage levels and allowing efficient linear regulation in the electrical device (16) for battery recharging.