Patents by Inventor Giovanni Gallegos

Giovanni Gallegos 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).

  • Asymmetric end-of-life protection circuit for fluorescent lamp ballasts
    Patent number: 8564216
    Abstract: An asymmetric end-of-life protection circuit with single-point voltage measurement is provided for an electronic ballast having two lamp connection terminals. A grounding circuit includes a capacitor and a first resistor coupled in parallel between a first lamp connection terminal and ground, and is effective to drain the second lamp connection terminal to ground. A lamp voltage detection circuit is coupled between the first lamp connection terminal and ground and measures the lamp voltage from the first lamp connection terminal. A controller is effective to shut down the ballast based on an output signal from the lamp voltage detection circuit being greater than a first predetermined threshold value or less than a second predetermined threshold value.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: October 22, 2013
    Assignee: Universal Lighting Technologies, Inc.
    Inventors: Giovanni Gallegos, James Koehler