H - Electricity – 02 – J
Patent
H - Electricity
02
J
H02J 7/10 (2006.01) H02J 7/00 (2006.01) H02J 9/06 (2006.01)
Patent
CA 2132419
A novel power charger apparatus (300) is provided for supplying electrical power to an electrical device (200) for operation or to a battery (402) for charging, or both. The charger apparatus (300) comprises a primary power supply (302) for supplying power from an external power source to the power charger (300), a power converter (306) coupled to the primary power supply (302) for convening the power received by the primary power supply (302) from the external power source into a form usable by the power charger (300), and a power controller (308) coupled to the power converter (306) for controlling the power applied to the device (200) or the battery (402), or both, whereby, regardless of the rate of charge of the battery (402), a constant current is maintained for charging the battery (402) while the voltage across the device (200) and battery (402), is allowed to vary. To ob- serve the rate of charge of the battery (402), the power charger (300) also includes a charge rate sensor (404) connected to the bat- tery (402) and coupled to the power controller (308) to measure the voltage across the battery (402).
Ast Research Inc.
Sim & Mcburney
LandOfFree
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