Over-voltage protection circuit

Details Over-voltage protection circuit Over-voltage protection circuit

2006-04-25

2006-04-25

Jackson, Stephen W. (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

Reexamination Certificate

active

07035070

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.

REFERENCES:
patent: 4164698 (1979-08-01), Kleeberg
patent: 5610511 (1997-03-01), Parker
patent: 5825174 (1998-10-01), Parker
patent: 6331764 (2001-12-01), Oglesbee et al.
patent: 6531845 (2003-03-01), Kerai et al.
patent: 6700766 (2004-03-01), Sato

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