Patents by Inventor William Dourlain

William Dourlain 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).

  • Expanded input voltage range for switch-mode power supply in broadband network
    Patent number: 5973489
    Abstract: In a complex AC power distribution network (e.g. CATV), a switching mode power supply at a node, automatically operates in a first mode when the input AC power is at a lower potential and operates in a second mode when the input AC power is at a higher potential. A controller switches between modes of operation depending on the input voltage and on the current mode of operation to proved stable switching between modes which in turn provides stable output voltage from the power supply.
    Type: Grant
    Filed: December 8, 1998
    Date of Patent: October 26, 1999
    Assignee: Philips Electronics N.A. Corporation
    Inventor: William Dourlain