process for setting the static convergence of three electron beams in a number of side by side 'and a kathodenstrahlroehre

摘要

A magnetizing apparatus for use in the static convergence of three in-line electron beams within a color television receiver cathode ray tube comprises two pluralities of windings. Each plurality is suitably arranged for positioning about a neck portion of the cathode ray tube in proximity to a magnetic material located adjacent to the neck. The windings are adapted to receive a magnetizing current for creating permanently magnetized regions within the magnetic material for producing a magnetic field within the cathode ray tube. The first plurality provides for like motion of the outer electron beams for which a first multiplicity of windings provides for like motion in a first direction and a second multiplicity provides for like motion in a direction substantially orthogonal to the first direction. The second plurality of windings produces a magnetic field for providing opposite motion of the outer electron beams for which a third multiplicity of the second plurality provides for opposite motion in a second direction and a fourth multiplicity provides for opposite motion in a direction substantially orthogonal to the second direction.