Patents Assigned to Societe Pour L'Application De L'Optique et de L'Electronique a la Recherche et a L'Automatisation Optelec
  • Toroidal transformer with integrated self-inductance device
    Patent number: 4847583
    Abstract: The invention provides a toroidal transformer with integrated self inductance device, comprising a closed main annular magnetic circuit on which an inner electric winding is coiled. A magnetic core, in the form of an open annular sector, is held in position at the periphery of the inner winding by peripheral bars. The assembly is covered by the outer electric winding. The magnetic core determines the value of the self inductance of the transformer.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: July 11, 1989
    Assignee: Societe Pour L'Application de L'Optique et de L'Electronique a La Recherche et a L'Automatisation Optelec, societe anonyme
    Inventor: Chappel Bernard
  • Electric transformer for microwave ovens
    Patent number: 4812798
    Abstract: The invention provides an electric transformer for microwave ovens including a conventional magnetic circuit with three columns, and electric circuits insulated by carcases and covers made from an insulating material. The secondary carcase forms a particular housing for the secondary heating winding so that the secondary high voltage winding and the secondary heating winding are partially superimposed. Thus an excellent electric insulation is provided without loss of space.
    Type: Grant
    Filed: May 9, 1988
    Date of Patent: March 14, 1989
    Assignee: Societe Pour L'Application De L'Optique et de L'Electronique a la Recherche et a L'Automatisation Optelec
    Inventor: Bernard Chappel
  • Electric transformer
    Patent number: D324371
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: March 3, 1992
    Assignee: Societe pour l'Application de l'Optique et de l'Electronique a la Recherche et a l'Automatisation Optelec
    Inventor: Maurice Patty