Patents by Inventor Sheng-Fa Chi

Sheng-Fa Chi 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).

  • Charger with output voltage compensation
    Patent number: 7602151
    Abstract: A charger with output voltage compensation includes an AC/DC circuit, an output interface, a charge controller, and a compensator. The AC/DC circuit converts an AC source into a DC source. The voltage of the DC source is elevated by a transformer and used to charge a battery via the output interface. The charge controller can further increase the voltage of the output interface in order to accelerate battery charging. The compensator compensates the voltage wasted by the circuit. Therefore, the invention can overcome energy waste caused by the internal resistance in the circuit, achieving satisfactory charging effects.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: October 13, 2009
    Assignee: Asian Power Devices Inc.
    Inventors: Yu-Chi Lai, Sheng-Fa Chi
  • Charger with output voltage compensation
    Publication number: 20080106233
    Abstract: A charger with output voltage compensation includes an AC/DC circuit, an output interface, a charge controller, and a compensator. The AC/DC circuit converts an AC source into a DC source. The voltage of the DC source is elevated by a transformer and used to charge a battery via the output interface. The charge controller can further increase the voltage of the output interface in order to accelerate battery charging. The compensator compensates the voltage wasted by the circuit. Therefore, the invention can overcome energy waste caused by the internal resistance in the circuit, achieving satisfactory charging effects.
    Type: Application
    Filed: November 7, 2006
    Publication date: May 8, 2008
    Inventors: Yu-Chi Lai, Sheng-Fa Chi