Patents by Inventor Chatrpol Pakasiri

Chatrpol Pakasiri 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).

  • Current-rectifying device, gate-boosting rectifier and method of permitting current to flow in one direction when driven by AC input voltage
    Patent number: 9515571
    Abstract: A current-rectifying device includes a switching component and an impedance transformer. A conductance between first and second nodes of the switching component is controlled based on a voltage between high-impedance control and control-reference nodes of the switching component to determine an amount of current that is permitted to flow between the first and second nodes. The impedance transformer includes a positive input node electrically connected to one of the first and second nodes based on AC voltage swings, a negative input node, a positive output node electrically connected to the high-impedance control node, and a negative output node, and which senses an AC voltage swing derived from the AC input voltage with the positive input node and the negative input node, and provides an AC voltage swing between the high-impedance control and control-reference nodes that is greater than the AC voltage swing derived from the AC input voltage.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: December 6, 2016
    Assignee: National Chiao Tung University
    Inventors: Yu-Jiu Wang, I-No Liao, Chao-Han Tsai, Chatrpol Pakasiri
  • GATE-BOOSTING RECTIFIER AND METHOD OF PERMITTING CURRENT TO FLOW IN FAVOR OF ONE DIRECTION WHEN DRIVEN BY AC INPUT VOLTAGE
    Publication number: 20150194907
    Abstract: A current-rectifying device includes a switching component and an impedance transformer. A conductance between first and second nodes of the switching component is controlled based on a voltage between high-impedance control and control-reference nodes of the switching component to determine an amount of current that is permitted to flow between the first and second nodes. The impedance transformer includes a positive input node electrically connected to one of the first and second nodes based on AC voltage swings, a negative input node, a positive output node electrically connected to the high-impedance control node, and a negative output node, and which senses an AC voltage swing derived from the AC input voltage with the positive input node and the negative input node, and provides an AC voltage swing between the high-impedance control and control-reference nodes that is greater than the AC voltage swing derived from the AC input voltage.
    Type: Application
    Filed: January 7, 2015
    Publication date: July 9, 2015
    Inventors: Yu-Jiu Wang, I-No Liao, Chao-Han Tsai, Chatrpol Pakasiri