Patents by Inventor Edward L. Hale

Edward L. Hale 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).

  • Adaptive current control
    Patent number: 5343382
    Abstract: Closed-loop control of current through a load through pulse-width modulated application of a substantially constant supply voltage across the load, wherein a duty cycle turn-on time is adjusted according to the result of a comparison between a commanded minimum current level and a sensed minimum current through the load during a cycle.
    Type: Grant
    Filed: April 5, 1993
    Date of Patent: August 30, 1994
    Assignee: Delco Electronics Corp.
    Inventors: Edward L. Hale, David D. Moller, Robert R. McConnell