Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific voltage responsive fault sensor
Reexamination Certificate
2011-05-24
2011-05-24
Patel, Dharti H (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific voltage responsive fault sensor
C320S116000, C320S119000, C320S166000, C320S167000
Reexamination Certificate
active
07948727
ABSTRACT:
An over-voltage protection circuit is disclosed herein for protection against over-voltage of an energy storage device while charging. The circuit operates within the operational limits of a battery-operated device, such as a mobile or handheld device. The over-voltage protection circuit comprises an over-voltage protection device, and an over-voltage protection controller. The controller allows current to flow to the over-voltage protection device only when an energy storage device is experiencing over-voltage. In allowing current to flow to the over-voltage protection device only when the voltage across the energy storage device is above a predetermined voltage, power conservation is achieved.
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Habicher Michael F.
Luong Quang A.
Madter Richard C.
Mathew Roshy Stan
Schaaff Carl D.
Jones Day
Liang Robert C.
Patel Dharti H
Pathiyal Krihna K.
Research In Motion Limited
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