Patents by Inventor Donald K. Coffey

Donald K. Coffey 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).

  • Method and apparatus for high current measurement
    Patent number: 7728578
    Abstract: In order to extend the measurement range of a current sensor, a current divider is formed by a first conductor formed in a current sensor that is mounted on a printed circuit board and a second conductor on the printed circuit board that electrically shorts at least one input terminal of the current sensor to at least one output terminal of the current sensor. The input terminal of the current sensor supplies the current to be measured to the first conductor and the output terminal supplies the measured current back to the printed circuit board.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: June 1, 2010
    Assignee: Silicon Laboratories Inc.
    Inventors: Brett E. Etter, Donald E. Alfano, Timothy J. Dupuis, Donald K. Coffey
  • METHOD AND APPARATUS FOR HIGH CURRENT MEASUREMENT
    Publication number: 20090284248
    Abstract: In order to extend the measurement range of a current sensor, a current divider is formed by a first conductor formed in a current sensor that is mounted on a printed circuit board and a second conductor on the printed circuit board that electrically shorts at least one input terminal of the current sensor to at least one output terminal of the current sensor. The input terminal of the current sensor supplies the current to be measured to the first conductor and the output terminal supplies the measured current back to the printed circuit board.
    Type: Application
    Filed: May 15, 2008
    Publication date: November 19, 2009
    Inventors: Brett E. Etter, Donald E. Alfano, Timothy J. Dupuis, Donald K. Coffey