Abstract: Picture display device comprising a picture balance correction system with a picture balance potentiometer. The system has a synthetic material support, with a wall of the housing of the potentiometer forming part of this support. The cap of the housing and the shaft of the potentiometer may be manufactured in one piece. The connections with the other parts of the picture display device are established by a lead-frame which is secured against the support or around which the support is molded.

Abstract: A deflection unit having a hollow synthetic material coil support within which a line deflection coil system is arranged, which line deflection coils are connected in an electric circuit to a line balance coil arrangement comprising a cylinder which is provided with two sub-coils and within which a magnet core is movably arranged. The coil cylinder is secured to the coil support and is provided with an arrangement of metal (connection) strips which ensure a direct connection between the balance coil lead-outs, the line deflection coils and a tap.

Abstract: An electromagnetic deflection unit (7) coaxially surrounds a part of the envelope (1) of a cathode array tube. The deflection unit (7) comprises a coil support (8) and a deflection coil system (11, 11') which is located between the coil support (8) and the envelope (1). Each end portion (18, 18') of the coils (11, 11') is located exclusively on the side of the front flange (16, 16') of the associated coil (11, 11') facing away from the envelope (1). By virtue thereof, the deflection unit (7) can be tilted relative to the envelope (1) such that a sufficient degree of convergence of electron beams on the display screen of the cathode ray tube is obtained.

Abstract: A method of manufacturing an electromagnetic deflection unit for a cathode ray tube, which unit comprises a field deflection coil consisting of two parts, a line deflection coil consisting of two parts and an annular core of a magnetizable material surrounding the two coils. The two parts of the field deflection coil are wound on the inside of a funnel-shaped field coil support. A hollow, funnel-shaped line deflection coil support having an annular flange at its wide end then passed into the field coil support to such an extent that its narrow end projects form the field coil supported and subsequently the two parts of the line deflection coil are wound on the inside of the line coil support.

Abstract: An electromagnetic deflection unit for a cathode ray tube, comprising has at least one support (4) with a flange (8) at its narrow end (5), which has a tangential groove into which merge radial grooves (14). Two sets of deflection coils (18, 19) are wound directly onto the support (4). The turns thereof traverse the radial grooves (14), the turns of at least one set of deflection coils (18) being bent into the tangential groove. The radial grooves (14) have longitudinally extending portions (16), which are filled by the turns traversing them. The bottom portion (20) of the tangential grooves lie on the surface of an oval cylinder. The deflection unit has a high sensitivity, large axial sliding tolerance and permits correction of various kinds of deflection errors.