Patents by Inventor Hubert Casper Raets

Hubert Casper Raets 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: 6381160
    Abstract: The invention relates to a converter comprising switching elements for chopping a direct voltage, in which turn-on phases of the switching elements alternate with one another, and comprising a circuit arrangement with resonant circuit elements processing the chopped direct voltage and serving for the supply of an output voltage. To improve such a converter in such a way that zero voltage switching (ZVS) can be ensured in an extended range of converter operations with possibly inexpensive converter modifications, it is proposed that the length of the dead-time phases, which are present between two consecutive turn-on phases and during which the switching elements are turned off, is automatically adapted so that switching losses, which occur particularly when the switching elements are turned on, can be minimized.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: April 30, 2002
    Assignee: U.S. Philips Corporation
    Inventors: Georg Sauerländer, Hubert Casper Raets, Thomas Dürbaum