Patents by Inventor John Willam Kelly

John Willam Kelly 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 PULSE WIDTH MODULATION
    Publication number: 20020121875
    Abstract: A pulse width modulation circuit (10) for a motor controller is operated by generating an offset voltage and adding the offset voltage to a carrier timing signal to form an offset carrier timing signal. The operation of each of the phases of the motor is controlled as a function of the offset carrier signal.
    Type: Application
    Filed: January 6, 2001
    Publication date: September 5, 2002
    Inventors: John Willam Kelly, Michael W. Degner, Paul Theodore Momcilovich