Patents by Inventor Yih Shan Ju

Yih Shan Ju 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: 6215256
    Abstract: An electronic stabilizer with single stage conversion includes a push-pull resonant stage, a synchronous pulse width modulation controller, and a converter. The push-pull resonant stage includes a high frequency transformer and transistors to form an alternating voltage-increasing loop that operates under self-activating oscillation, the high frequency transformer including a secondary winding for driving a lamp. The synchronous pulse width modulation controller samples signals from the lamp and feeds back to control a power input for the lamp. The converter includes transistors to form a dynamic resistance that allows current to flow in both directions. The converter includes an input end that is electrically connected to an output end of the synchronous pulse width modulation controller. The converter further includes an output end that is electrically connected in series to the secondary winding of the high frequency transformer and in series connection with the lamp.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: April 10, 2001
    Assignee: Ambit Microsystems Corporation
    Inventor: Yih Shan Ju