Patents by Inventor Wang J. Qi

Wang J. Qi 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).

  • Patent number: 5426348
    Abstract: The present invention provides an apparatus for operating an electronic lamp from an AC line (10) and has a rectifier circuit (12), a power coupling circuit (18), a starting circuit (22), a resonant circuit (24), a feedback circuit (26), a driving circuit (28), and an output coupling circuit (30). The rectifier circuit (12) is connected to the AC line (10) and has a positive output terminal (14) and a negative output terminal (16) for providing DC operating power. The power coupling circuit (18) is connected to the DC operating power and provides power to a drive node (20. The starting circuit (22) provides a starting pulse which starts the feedback circuit (26) and the driving circuit (28) into oscillation. The resonant circuit (24) is connected to the drive node (20) and has a resonant node (32) for providing output power to the electronic lamp (40).
    Type: Grant
    Filed: April 20, 1994
    Date of Patent: June 20, 1995
    Assignee: Wattsmart, Inc.
    Inventor: Wang J. Qi