Patents by Inventor Chien-Yu LO

Chien-Yu LO 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).

  • High efficiency bridgeless power factor correction converter for converting input alternating current into output direct current
    Patent number: 9800140
    Abstract: A high efficiency bridgeless power factor correction converter includes a power factor correction control unit, a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a first inductor, a second inductor and a bulk capacitor. The power factor correction control unit is configured to turn on or turn off the first switch, the second switch, the third switch, the fourth switch, the fifth switch and the sixth switch, so that the high efficiency bridgeless power factor correction converter converts an input alternating current voltage into an output direct current voltage.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: October 24, 2017
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Sheng-Yu Wen, Cheng-Yi Lin, Chien-Yu Lo
  • HIGH EFFICIENCY BRIDGELESS POWER FACTOR CORRECTION CONVERTER
    Publication number: 20170033681
    Abstract: A high efficiency bridgeless power factor correction converter includes a power factor correction control unit, a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a first inductor, a second inductor and a bulk capacitor. The power factor correction control unit is configured to turn on or turn off the first switch, the second switch, the third switch, the fourth switch, the fifth switch and the sixth switch, so that the high efficiency bridgeless power factor correction converter converts an input alternating current voltage into an output direct current voltage.
    Type: Application
    Filed: January 21, 2016
    Publication date: February 2, 2017
    Inventors: Sheng-Yu WEN, Cheng-Yi LIN, Chien-Yu LO