Patents by Inventor Linchong Zhao

Linchong Zhao 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).

  • Soft switching topological circuit in boost or buck converter
    Patent number: 6525513
    Abstract: The invention relates to a soft switching topological circuit. A zero voltage turn-on is realized when the main switch is turned on, by utilizing the resonance of the resonant inductor and the resonant capacitor after the auxiliary switch is turned on. Moreover, during the turn-off of the main switch, the resonant inductor withstands a voltage drop, which causes the energy-feed device corresponding to the auxiliary switch to feed no energy out when the auxiliary switch is turned on, thereby realizing zero current turn-on of the auxiliary switch, and increasing the circuit running efficiency.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: February 25, 2003
    Assignee: Emerson Network Power Co., Ltd.
    Inventor: Linchong Zhao