Power adapter interface circuitry for protecting a battery...

Details Power adapter interface circuitry for protecting a battery... Power adapter interface circuitry for protecting a battery...

2006-09-12

2006-09-12

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

07106566

ABSTRACT:
An integrated circuit (IC) has logic and timing circuits that are coupled to discrete circuitry to provide protection and indications whenever an AC adapter that is faulty or has improper voltage levels or polarity are plugged into a system. In particular, the IC device provides over-voltage, under-voltage, and reversed-polarity protections to an electronic system to keep the electronic system from being damaged by an alternating current (AC) adapter having an improper voltage range or voltage polarity. It also provides a protection that prevents an adapter from powering a host system that has a short-circuit fault.

REFERENCES:
patent: 4439821 (1984-03-01), Grippe
patent: 5371456 (1994-12-01), Brainard
patent: 6204714 (2001-03-01), Milshtein et al.
patent: 6313611 (2001-11-01), Mowry et al.
patent: 6495995 (2002-12-01), Groom et al.

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