Patents by Inventor Yen-Chien Chen

Yen-Chien Chen 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).

  • Transformer and control method thereof
    Patent number: 9742298
    Abstract: A transformer includes a first switch, a first winding, a second winding, a third winding, a first current direction control unit, a second current direction control unit and a loading capacitor. The first switch is coupled between the second winding and the third winding. The first winding is disposed at a primary side and coupled between an input voltage terminal and a first ground. The second winding is disposed at a secondary side and coupled between a second ground and the first switch. The third winding is disposed at the secondary side. The first current direction control unit is coupled between the second winding and an output voltage terminal. The second current direction control unit is coupled between the third winding and the output voltage terminal. The first switch is turned on for adjusting a winding ratio when the transformer is used to output a high voltage.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: August 22, 2017
    Assignees: Qisda (Suzhou) Co., LTD., Qisda Corporation
    Inventors: Chin-Sheng Chueh, Yen-Chien Chen, Tung-Hsien Tsai, Po-Wen Wang
  • Transformer and Control method Thereof
    Publication number: 20160049875
    Abstract: A transformer includes a first switch, a first winding, a second winding, a third winding, a first current direction control unit, a second current direction control unit and a loading capacitor. The first switch is coupled between the second winding and the third winding. The first winding is disposed at a primary side and coupled between an input voltage terminal and a first ground. The second winding is disposed at a secondary side and coupled between a second ground and the first switch. The third winding is disposed at the secondary side. The first current direction control unit is coupled between the second winding and an output voltage terminal. The second current direction control unit is coupled between the third winding and the output voltage terminal. The first switch is turned on for adjusting a winding ratio when the transformer is used to output a high voltage.
    Type: Application
    Filed: August 3, 2015
    Publication date: February 18, 2016
    Inventors: Chin-Sheng Chueh, Yen-Chien Chen, Tung-Hsien Tsai, Po-Wen Wang