Patents Assigned to Werner Truck GmbH & Co. KG
  • Transformer with electrical isolation protection and power supply unit or voltage converter with a transformer of this type
    Patent number: 6567249
    Abstract: A invention relates to a transformer having a primary coil and a secondary coil, with a ferromagnetic core inserted in a coil former. The alternating current resistance of the primary coil (3) drops on reaching a triggering temperature (TC) which lies above the operating temperature but below the softening temperature (TW) of the coil former (6) and/or insulation of coil winding (3, 4). The coil core (5) may consist at least partially of a material with a magnetic permeability which drops when the triggering temperature (TC) is exceeded.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: May 20, 2003
    Assignee: Werner Truck GmbH & Co. KG
    Inventor: Dietmar Berndt