Patents by Inventor Funing Wu

Funing Wu 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).

  • Phase-shift modulation resonant inverter
    Patent number: 6759834
    Abstract: A phase-shift modulation resonant inverter is turned on and off by built-in switches Q1 and Q2. An inductor L and a load capacitor C are used to produce vibration output from the inverter. A current sampling circuit is employed to take samples of resonant current. A controller is used to adjust the shift angle between the phase of switches Q1 and Q2 and that of resonance current. This invention features simple structure, flexible control and a wide range of voltage changes, with an efficiency up to 98%.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: July 6, 2004
    Inventor: Funing Wu
  • Phase-shift modulation resonant inverter
    Publication number: 20030231008
    Abstract: A phase-shift modulation resonant inverter is turned on and off by built-in switches Q1 and Q2. An inductor L and a load capacitor C are used to produce vibration output from the inverter. A current sampling circuit is employed to take samples of resonant current. A controller is used to adjust the shift angle between the phase of switches Q1 and Q2 and that of resonance current. This invention features simple structure, flexible control and a wide range of voltage changes, with an efficiency up to 98%.
    Type: Application
    Filed: September 5, 2002
    Publication date: December 18, 2003
    Inventor: Funing Wu