Patents by Inventor Jia-Chi Liu

Jia-Chi 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).

  • Magnetization apparatus
    Patent number: 8611064
    Abstract: A magnetization apparatus includes a power supply unit, an energy storage element and a voltage clamp unit. The power supply unit generates at least one exciting signal to excite at least a coil of a magnetic field generating apparatus. The voltage clamp unit has a clamping voltage. The voltage level of the clamp voltage is higher than the voltage level of the exciting signal, and lower than the rated voltage of the energy storage element. When the exciting signal turns to a low voltage level, the voltage clamp unit controls the voltage level of the energy storage element to be less than or equal to the voltage level of the clamp voltage. This configuration with the voltage clamp unit can extend the lifetime of the energy storage element and reduce the energy loss to enhance the efficiency.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: December 17, 2013
    Assignee: National Cheng Kung University
    Inventors: Ray-Lee Lin, Tsu-Hua Al, Jia-Chi Liu
  • MAGNETIZATION APPARATUS
    Publication number: 20120327548
    Abstract: A magnetization apparatus includes a power supply unit, an energy storage element and a voltage clamp unit. The power supply unit generates at least one exciting signal to excite at least a coil of a magnetic field generating apparatus. The voltage clamp unit has a clamping voltage. The voltage level of the clamp voltage is higher than the voltage level of the exciting signal, and lower than the rated voltage of the energy storage element. When the exciting signal turns to a low voltage level, the voltage clamp unit controls the voltage level of the energy storage element to be less than or equal to the voltage level of the clamp voltage. This configuration with the voltage clamp unit can extend the lifetime of the energy storage element and reduce the energy loss to enhance the efficiency.
    Type: Application
    Filed: June 20, 2012
    Publication date: December 27, 2012
    Inventors: Ray-Lee LIN, Tsu-Hua Al, Jia-Chi Liu