Patents by Inventor Chu-Quon Lee

Chu-Quon Lee 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).

  • Parallel resonant converter with zero voltage switching
    Patent number: 4992919
    Abstract: A parallel resonant converter as disclosed having in one embodiment a variable inductance and having a control circuit which operates the switches of the converter under zero voltage switching conditions and under continuous conduction mode by maintaining the quality factor of the resonant circuit generally equal to the DC conversion ratio.
    Type: Grant
    Filed: December 29, 1989
    Date of Patent: February 12, 1991
    Inventors: Chu-Quon Lee, Kasemsan Siri, Anand K. Upadhyay