Patents by Inventor Lixiong Liu

Lixiong Liu 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).

  • Self-adaptive surge-proof circuit
    Patent number: 8982522
    Abstract: A self-adaptive surge-proof circuit is used in a switching power supply device. The switching power supply device includes an AC input, a filter-rectifier circuit connected to the AC input, and a power converter circuit connected to the filter-rectifier circuit. The self-adaptive surge-proof circuit includes a surge suppression unit connected between the filter-rectifier circuit and the power converter circuit, a switching unit connected in parallel with the surge suppression unit for adjusting an input impedance of the switching power supply device, a sampling unit connected to the filter-rectifier circuit for collecting a surge signal from the filter-rectifier circuit, and a drive-controlling circuit connected to the sampling unit for generating a driving signal for controlling on and off of the switching unit according to the surge signal.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: March 17, 2015
    Assignee: Shenzhen Huntkey Electric Co., Ltd.
    Inventors: Weiyin Duan, Lixiong Liu
  • SELF-ADAPTIVE SURGE-PROOF CIRCUIT
    Publication number: 20120281327
    Abstract: A self-adaptive surge-proof circuit is used in a switching power supply device. The switching power supply device includes an AC input, a filter-rectifier circuit connected to the AC input, and a power converter circuit connected to the filter-rectifier circuit. The self-adaptive surge-proof circuit includes a surge suppression unit connected between the filter-rectifier circuit and the power converter circuit, a switching unit connected in parallel with the surge suppression unit for adjusting an input impedance of the switching power supply device, a sampling unit connected to the filter-rectifier circuit for collecting a surge signal from the filter-rectifier circuit, and a drive-controlling circuit connected to the sampling unit for generating a driving signal for controlling on and off of the switching unit according to the surge signal.
    Type: Application
    Filed: November 17, 2011
    Publication date: November 8, 2012
    Inventors: Weiyin Duan, Lixiong Liu