Patents by Inventor Nan-Ming Chen

Nan-Ming 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).

  • POWER SUPPLY WITH REDUCED POWER CONSUMPTION
    Publication number: 20110222314
    Abstract: A power supply includes an isolated power converter and a DC/DC converter. The isolated power converter includes a primary winding connected to a primary power stage, a secondary winding to generate a first output voltage, and an auxiliary winding at the primary side to generate a voltage signal proportional to the first output voltage to stabilize the first output voltage. The DC/DC converter converts the first output voltage into a second output voltage for supplying for a load.
    Type: Application
    Filed: March 9, 2011
    Publication date: September 15, 2011
    Applicant: RICHTEK TECHNOLOGY CORP.
    Inventors: KUO-CHI LIU, NAN-MING CHEN, YONG-CHIN LEE, MING-HSUEH LEE
  • Method and apparatus for current measurement using hall sensors without iron cores
    Patent number: 7719258
    Abstract: A method and apparatus for current measurement using Hall sensors without iron cores, used to estimate a flowing current in an electric conducting cable are provided by the exemplary examples of the present invention. The method for current measurement using Hall sensors without iron cores includes the following step: (a) providing Hall sensors to be attached to or located near the electric conducting cable; (b) using each of the Hall sensors to measure the flux density of the magnetic field generated by the flowing current, so as to generate an output voltage according to the flux density of the magnetic field; (c) performing a statistical operation on the output voltages of the Hall sensors, so as to generate a statistical voltage; (d) estimating the flowing current in the electric conducting cable according to the statistical voltage.
    Type: Grant
    Filed: October 13, 2008
    Date of Patent: May 18, 2010
    Assignee: National Taiwan University of Science and Technology
    Inventors: Kun-Long Chen, Nan-Ming Chen
  • METHOD AND APPARATUS FOR CURRENT MEASUREMENT USING HALL SENSORS WITHOUT IRON CORES
    Publication number: 20100090684
    Abstract: A method and apparatus for current measurement using Hall sensors without iron cores, used to estimate a flowing current in an electric conducting cable are provided by the exemplary examples of the present invention. The method for current measurement using Hall sensors without iron cores includes the following step: (a) providing Hall sensors to be attached to or located near the electric conducting cable; (b) using each of the Hall sensors to measure the flux density of the magnetic field generated by the flowing current, so as to generate an output voltage according to the flux density of the magnetic field; (c) performing a statistical operation on the output voltages of the Hall sensors, so as to generate a statistical voltage; (d) estimating the flowing current in the electric conducting cable according to the statistical voltage.
    Type: Application
    Filed: October 13, 2008
    Publication date: April 15, 2010
    Applicant: National Taiwan University of Science and Technology
    Inventors: Kun-Long Chen, Nan-Ming Chen