Abstract: A deflection yoke apparatus comprises pairs of horizontal and vertical deflection coils. A coil separator is located between both coils. A deflection core forms a magnetic path for a magnetic flux generated from both deflection coils. An auxiliary coil is arranged at least a one position in a vertical deflection direction outside the deflection core. A horizontal deflection current is supplied to this auxiliary coil. A magnetic field, generated from the auxiliary coil, reduces an intensity of externally leaking magnetic field which radiates outside the deflection core when a horizontal deflection current is supplied to the horizontal deflection coils.

Abstract: The saturable reactor employs two dual drum cores having two winding portions which are sandwiched by two common permanent magnets to statically bias the magnetism. Each winding portion of each drum core is wound with two impedance coils which are individually series-connected to the either of two horizontal deflection coils. Two drum cores are inserted into the common control coils. When a horizontal deflection current is supplied to the impedance coils and a vertical deflection current is supplied to the control coil, the current which flows in a pair of horizontal deflection coils varies differentially in a vertical deflection cycle to minimize misconvergence.

Abstract: The deflection yoke for use in the in-line type color cathode-ray tube comprises a horizontal deflection yoke, vertical deflection yoke and core, and the vertical deflection coil is an or/and auxiliary magnetic field correcting means which generates the vertical deflection magnetic field of the screen side in the form of a pincushion. A set of correction members made of mild magnetic material consisting of circular lugs which extend in the circumferential direction of the neck of the cathode-ray tube and center lugs which extend in the direction of the tube axis are provided at the north and south positions between the horizontal deflection coil at the electron gun side of the deflection yoke and the vertical deflection coil to simultaneously correct misconvergence in the horizontal and vertical directions at the corners of the fluorescent screen.

Abstract: The deflection yoke comprises a pair of horizontal deflection coils, a pair of vertical deflection coils which are toroidally wound around the annular core and a coil separator which separates both coils one from another. The winding guide frame which has the winding engaging members is fitted to both open ends of the annular core. By use of these winding engaging members, the vertical deflection coils are wound around the frame core so that the winding turns are concentrated at a partial region of the winding guide frame at the screen side and the winding turns are divided into two regions of the winding guide frame at the electron gun side, in the form of V-shape.

Abstract: A deflection yoke apparatus comprising a yoke which is provided with horizontal and vertical deflection coils, a coil separator disposed between these deflection coils and a deflection core which surrounds the above-mentioned parts, and a convergence device which is attached to a rear part of said yoke and provided with a pair of coil devices which converge electron beams and a cover which supports the coil devices, wherein a pair of coil devices are arranged in a vertical direction intersecting at right angles to the direction of the in-line array of electron beam, the coil devices comprise U-shaped cores and convergence coils which are mounted on the U-shaped cores and supply a fixed amount of vertical deflection current and the U-shaped cores are constructed to be movable in the direction of electron beam to converge electron beams though the convergence coils are fixedly positioned.

Abstract: A flyback transformer which has a coil bobbin provided with a low voltage coil and high voltage coil and a plurality of terminal pins to which the lead wires of these coils are to be connected and attached to the leg of the core, a hollow cylindrical housing which houses the coil bobbin and a housing cap provided with a through hole into which the leg of a core is inserted and contains a rectifier circuit which rectifies high voltage generated by the high voltage coil, wherein the terminal pins are projected from one end of the housing and the leg of the core is inserted into it and the housing cap is mounted on the other end of the housing and a space formed between the housing and the housing cap is filled with an insulating resin.

Abstract: A deflection coil is provided which comprises a coil frame having a flared coil bobbin and guides provided at the front and rear ends of the coil bobbin and integrated therewith. The guide at the front end of the coil frame has a first plurality of circumferentially spaced coil winding insertion slots therein and the guide at the rear end of the coil frame has a second plurality of circumferentially based coil winding insertion slots therein. The first plurality of slots is greater than the second plurality of slots. The deflection coil further comprises a saddle-type coil along the inside surface of the coil frame which has a plurality of wires passing through predetermined coil winding insertion slots in the guide at the front and rear ends of the coil frame. The saddle-type coil winding has a distribution in the slots for producing a magnetic field having a strong pin-shaped field at the front end thereof and a barrel-shaped field at the rear end thereof.

Abstract: Liquid level sensing means comprising galvano-magneto effect transducing means, magnet means for applying magnetic flux to the transducing means, switching means movable with respect to the transducing means and having an influence on the magnetic flux applied from the magnetic means to the transducing means so that an electric signal is produced by the transducing means when the switching means has passed by the transducing means from one side to the other side thereof, one of the transducing means and the switching means being held stationary, and the other being movable in accordance with a change in liquid level.

Abstract: Liquid level sensing device comprising magnet received in the cylindrical portion of an oil reservoir cap, a signal generating electrical circuit, by which an oil level is indicated, including galvano-magneto effect transducing device attached to the magnet, magnetic device carried on a diaphragm of the oil reservoir and movable with respect to the transducing device, the magnetic device moving away from the transducing device when the diaphragm is lowered so that an electric signal is generated by the transducing device.

Abstract: A flyback transformer comprising a magnetic core and primary and secondary windings wound around the magnetic core, the secondary winding being divided into a plurality of coil units and alternately connected in series with the same plurality of rectifying diodes, the coil units being wound around individual layer bobbins, the bobbins being assembled in layers and fitted alternately and the outermost layer bobbin being mounted with a support on which a plurality of diodes are fixed, whereby the whole flyback transformer obtains a compact structure.

Abstract: A coil frame comprises guides provided at the front and rear ends of a flared coil bobbin. Each guide has a plurality of circumferentially spaced winding insertion slots. The coil insertion slots in at least one of the guides are formed such that slot depth in the axial direction of a CRT is shallow in the vicinity of a window, with the depth of each slot becoming gradually deeper as the slots become more distant from the window. A deflection coil is formed by winding a deflection coil wire on the coil frame through the coil winding insertion slots of the guides such that a saddle-type deflection coil extends along the inside surface of the coil frame.

Abstract: A deflection yoke includes a coil frame having guide members provided at the front and rear ends of a flared core or coil bobbin. Each guide member has a plurality of circumferentially arrayed finger members spaced so as to define slots having a predetermined width. Each finger member is provided with a pair of projections extending outwardly in the radial direction of the coil frame such that the projections define an annular channel. A troidal-type winding is wound on the coil frame between corresponding ones of the slots, and a saddle-type winding is wound on the coil frame through the annular channel so as to extend along the inside surface of the coil frame.

Abstract: A low tension and a high tension coil on a flyback transformer are coupled together with an output rectifier connected with the high tension coil by enclosure of an electrically insulating material. A hollow cylindrical connector body of an electrically insulating material is attached to the enclosure, and has one end of a greater inner diameter than that of the other end, with a step formed intermediate the both ends. Said one end of the connector body is disposed within the enclosure and is adapted to receive a conductive cap electrically connected with the rectifier while said other end opens outside the enclosure. The flyback transformer is mounted on a television receiver, and the end of a high tension lead wire is inserted into the connector body of the flyback transformer through said other end in order to supply the rectifier output to a cathode ray tube.

Abstract: Fastened about the legs of a pair of U-shaped cores are a low voltage coil bobbin having a low voltage coil and a high voltage coil bobbin having a high voltage coil. Attached to one side surface of the core is a metallic member for core support, and attached to the other side surface is a rectifier holder to which are secured high voltage rectifier circuit components, the metallic member and rectifier holder cooperating to embrace the core. The low voltage coil bobbin is secured to a terminal board having a plurality of terminal pins fixed thereto, thereby forming a unitary assembly, and the terminal board is further secured to the metallic member. The low voltage coil bobbin is secured to the rectifier holder, thereby forming a single, unitary assembly.

Abstract: A keyboard switch circuit comprises a first plurality of terminals associated with m rows and a second plurality of terminals associated n columns. A plurality of series circuits each including a reluctance element and a diode are connected between the terminals associated with the rows and the columns, respectively, in a manner to correspond with key switches. By applying input pulse signals to the terminals of the rows, a keyboard signal corresponding to a key depressed is derived in the form of pulses on the terminals associated with the columns.

Abstract: A magnetic sensor includes a housing in which flux producing means which comprises an electromagnet or a permanent magnet is received. A pair of magnetoelectric transducer elements are secured to a surface of the flux producing means which represents a magnetic pole, with a given spacing between the elements. In order to dispose the magnetoelectric transducer elements as close as possible to the outer surface of the housing, the latter is formed with a through opening at a corresponding position. The through opening is covered by a thin shield cap to protect the magnetoelectric transducer elements from a member being detected which is passed in sliding contact with or very close to the outer surface of the housing and to provide an enclosed construction for the housing.

Abstract: A deflection yoke includes a coil frame comprising a flared body and a pair of end formations at the front and rear ends of the body. Around each end formation, the frame is formed with a plurality of grooves, and a deflection coil is directly wound on the inner surface of the frame in a saddle configuration, utilizing the grooves.

Abstract: A deflection yoke includes at least three positioning units mounted on one end of a coil separator having its other end secured against the neck of a cathode ray tube, the units permitting an adjustment in the orientation of the deflection yoke relative to the tube axis when fixedly mounting the yoke about the tube while maintaining it spaced from the tube wall. Each of the positioning unit comprises a support plate secured to the one end of the coil separator, and a threaded bolt adjustably and threadably engaging the support plate and having its free end held in abutment against the tube wall. Relative adjustment of the threaded bolts enables the axis of the deflection yoke to be disposed at a desired orientation with respect to the tube axis.

Abstract: A deflection yoke is supported against the wall of a cathode ray tube by using adjusting bolts which threadably engage a plurality of threaded bores formed in a front surface of a coil separator of the deflection yoke so that the inclination of the deflection yoke can be adjusted when a front portion of the yoke is removed from the tube.

Abstract: The rotation of a motor is controlled to maintain a standard frequency from a standard frequency generator in synchronism with the frequency of a tachogenerator which is associated with the d.c. motor. In order to prevent the motor rotation from being stabilized at a number of revolutions other than a predetermined number of revolutions, there are provided an acceleration circuit and a stop circuit for forcedly controlling the motor rotation at the predetermined number of revolutions.