Patents by Inventor YuLei Dong

YuLei Dong 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).

  • Dimming drive circuit and illumination apparatus including the dimming drive circuit
    Patent number: 9565729
    Abstract: Various embodiments may relate to a dimming drive circuit for an illumination apparatus and an illumination apparatus including the dimming drive circuit, wherein the dimming drive circuit includes a filter circuit unit and a bleeder circuit unit, a main control module connected to the filter circuit unit and the bleeder circuit unit, respectively, and an auxiliary control module configured to reduce the current of the bleeder circuit unit and/or to switch off the bleeder circuit unit according to a characteristic input current of the dimming drive circuit prior to switch-off of the bleeder circuit unit by the main control module in a first operation state of the dimming drive circuit, and to prevent the filter circuit unit from releasing electrical energy via the bleeder circuit unit in a second operation state of the dimming drive circuit.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: February 7, 2017
    Assignee: OSRAM GMBH
    Inventors: Haibin Xiao, YuLei Dong
  • DIMMING DRIVE CIRCUIT AND ILLUMINATION APPARATUS INCLUDING THE DIMMING DRIVE CIRCUIT
    Publication number: 20150296583
    Abstract: Various embodiments may relate to a dimming drive circuit for an illumination apparatus and an illumination apparatus including the dimming drive circuit, wherein the dimming drive circuit includes a filter circuit unit and a bleeder circuit unit, a main control module connected to the filter circuit unit and the bleeder circuit unit, respectively, and an auxiliary control module configured to reduce the current of the bleeder circuit unit and/or to switch off the bleeder circuit unit according to a characteristic input current of the dimming drive circuit prior to switch-off of the bleeder circuit unit by the main control module in a first operation state of the dimming drive circuit, and to prevent the filter circuit unit from releasing electrical energy via the bleeder circuit unit in a second operation state of the dimming drive circuit.
    Type: Application
    Filed: April 13, 2015
    Publication date: October 15, 2015
    Inventors: Haibin Xiao, YuLei Dong