Patents by Inventor Christian Sohnel

Christian Sohnel 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).

  • Electronic ballast
    Patent number: 6094016
    Abstract: An electronic ballast (EVG) is provided for operating at least one lamp (10), wherein a light sensor (20) for monitoring the brightness of a specific physical area (28) can be connected to the electronic ballast. A control arrangement (12) controls or regulates the brightness of the lamp (10) as a function of an actual brightness value delivered by the light sensor (20) and when the electronic ballast is put into operation automatically identifies whether a light sensor (20) is connected to the connection arrangement (18a, 18b).
    Type: Grant
    Filed: September 1, 1999
    Date of Patent: July 25, 2000
    Assignee: Tridonic Bauelemente GmbH
    Inventors: Siegfried Luger, Alfred Trostl, Christian Sohnel