Patents by Inventor Huijie Xue

Huijie Xue 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).

  • Multiple voltage ballast
    Patent number: 8344646
    Abstract: A ballast and method for operating a ballast includes a switch or other circuit for connecting and disconnecting a voltage multiplier to a rectifier circuit. A control circuit for controlling the switch senses an input voltage and connects the voltage multiplier to the rectifier circuit when an input voltage falls below a selected voltage level.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: January 1, 2013
    Assignee: Fulham Company Limited
    Inventors: Huijie Xue, Ning Zhai
  • Time delay control scheme for a power supply with multiple outputs
    Patent number: 7518263
    Abstract: A time delay synchronous control scheme for a power supply, which has multiple outputs and tight output regulations, is provided. The switching mode power supply includes (1) a front-end DC/DC converter with current mode output, which can be a LLC Series Resonant converter (SRC) or a flyback converter; (2) one or several post buck converters directly cascaded from the output capacitor of the front-end DC/DC converter; (3) a new scheme of time delay synchronous control used to make the post buck synchronize and modulate from the front-end LLC-SRC or flyback converter. The proposed time delay synchronous control circuit can eliminate the conventional input filter of the post buck converters, as well as reduce the ripple current on the output capacitor of the front-end DC/DC converter, as a result of which, a high efficiency for the overall architecture can be obtained.
    Type: Grant
    Filed: April 12, 2004
    Date of Patent: April 14, 2009
    Assignee: DELTA Electronics, Inc.
    Inventors: Hongjian Gan, Huijie Xue, Chaoqun Sun, Alpha J. Zhang
  • Multiple voltage ballast
    Publication number: 20070217093
    Abstract: A ballast and method for operating a ballast includes a switch or other circuit for connecting and disconnecting a voltage multiplier to a rectifier circuit. A control circuit for controlling the switch senses an input voltage and connects the voltage multiplier to the rectifier circuit when an input voltage falls below a selected voltage level.
    Type: Application
    Filed: March 6, 2006
    Publication date: September 20, 2007
    Inventors: Huijie Xue, Ning Zhai