Patents by Inventor Steven W. Bryson

Steven W. Bryson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Power measurement for adaptive battery charger
    Patent number: 6144187
    Abstract: A highly flexible adaptive battery charger circuit that optimizes the efficiency of battery charging. The battery charger provides internal multiplier circuitry to measure input power allowing it to be used with AC adapters having different wattage. It further includes circuitry to digitally adjust threshold levels for the various control loops within the charger circuitry.
    Type: Grant
    Filed: July 13, 1999
    Date of Patent: November 7, 2000
    Assignee: Fairchild Semiconductor Corporation
    Inventor: Steven W. Bryson
  • Method and circuit for preventing oscillations in a battery charger
    Patent number: 6104170
    Abstract: Method and circuitry for clamping outputs of inactive error amplifiers in battery chargers eliminate delays and prevent oscillatory tendencies. By clamping the output of, for example, an inactive current loop amplifier in response to the output of an active voltage loop amplifier in a battery charging circuit, the inactive amplifier is prevented from saturating, such that it can take over as the controlling loop with minimal delay.
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: August 15, 2000
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Ronald J. Lenk, Steven W. Bryson