JPS63120469U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of an embodiment of the horizontal deflection linearity correction circuit of the present invention, FIG. 2 is a circuit diagram for explaining the operation of the horizontal deflection linearity correction circuit shown in FIG. 1, and FIGS. 3 and 11. is a block diagram of a horizontal deflection linearity correction circuit using the previously proposed horizontal deflection linearity correction circuit, FIGS. 4 to 6 are block diagrams of the previously proposed horizontal deflection linearity correction device, and FIG. 7 is a characteristic curve. As an example, FIG. 8 is a waveform diagram of a sawtooth wave current, FIG. 9 is an explanatory diagram of problems in a wide deflection angle picture tube, and FIG. 10 is an explanatory diagram of image distortion. 1...Horizontal deflection output circuit, 2...Horizontal deflection coil,
5... Capacitor, 7, 8... Drum core, 9... Permanent magnet, 10, 11... Winding, LCA... Horizontal deflection linearity correction device, 14... Secondary winding, R... Load circuit, S
W...Switch, D...Diode.

Claims (1)

[Scope of utility model registration request] one permanent magnet, each of which is in contact with the two magnetic poles of the pair of the permanent magnet in an arrangement such that the magnetic flux generated by the permanent magnet can be circulated in series, and is spaced apart from each other; two saturable magnetic cores provided in a state of When the two saturable magnetic cores are connected and a current is passed through them in a certain direction, the magnetic flux generated by the respective windings wound around the two saturable magnetic cores is equal to the magnetic flux generated by the permanent magnet for one of the saturable magnetic cores. Determining the connection polarity of the two windings wound on the two saturable magnetic cores so that the magnetic flux is added and subtracted from the magnetic flux by the permanent magnet in the other saturable magnetic core, The series-connected windings are connected substantially in series with the horizontal deflection coil of the picture tube, and the windings dominating the right side of the screen among the windings respectively wound around the two saturable magnetic cores. A horizontal deflection linearity correction circuit formed by winding a secondary winding and connecting a series connection circuit of a switch, a diode, and a load circuit to the secondary winding.