Patents by Inventor Pieter W. Habing

Pieter W. Habing 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).

  • Circuit arrangement and signalling light provided with the circuit arrangement
    Patent number: 6147458
    Abstract: A circuit arrangement for operating a semiconductor light source includes connection terminals for connecting a control unit, an input filter, a converter comprising a control circuit, output terminals for connecting the semiconductor light source, an apparatus CM for removing a leakage current occurring in the control unit in the non-conducting state, and a self-regulating circuit for deactivating the apparatus CM. The circuit arrangement is also provided with a detection circuit for detecting an incorrect functioning of the converter or the semiconductor light source. For this purpose, preferably a minimum voltage and a maximum voltage are detected at the output terminals.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: November 14, 2000
    Assignees: U.S. Philips Corporation, Lumileds Lighting B.V.
    Inventors: Marcel J. M. Bucks, Engbert B. G. Nijhof, Johannes E. Algra, John E. K. G. De Clercq, Pieter W. Habing, Stefan E. Roijers