MAGNETISERINGSANORDNING OCH SETT FOR ANVENDNING AV DENNA VID KORRIGERING AV FERGRENHET I ETT KATODSTRALEROR JEMTE TILLHORANDE PRODUKT

摘要

A cathode ray tube of a color television receiver includes a magnetic material located adjacent to a neck portion. A magnetizing apparatus is used for establishing the color purity of three in-line electron beams within the cathode ray tube. The magnetizing apparatus comprises at least two elongated conductor loops arranged for positioning about the neck in proximity to the magnetic material and capable of being energized by a magnetizing current for creating permanently magnetized regions within the material. The magnetized regions produce a color purity magnetic field within the cathode ray tube for establishing the color purity of the three in-line electron beams. An elongated portion of each of the conductor loops follows along a portion of the periphery of the neck.