Patents by Inventor FREDERIC GRAHAM

FREDERIC GRAHAM 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).

  • LIGHT EMITTING DIODE DRIVER WITH OVERLOAD PROTECTION AND INDICATION WITH REDUNDANCY
    Publication number: 20130264945
    Abstract: A method of driving a light-emitting diode (LED) light load is disclosed herein. The method includes the step of driving an LED light load in a plurality of different modes. Each mode is defined by at least one of constant current and constant voltage delivered by a power supply. In the exemplary embodiment disclosed herein, each mode can be defined by at least one of constant current and constant voltage and by at least one of variable current and variable voltage.
    Type: Application
    Filed: April 4, 2013
    Publication date: October 10, 2013
    Inventors: AL SMITH, FREDERIC GRAHAM