JPS6247046U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a circuit connection diagram showing one embodiment of the deflection yoke device according to the present invention, Fig. 2 is a sectional view showing the structure of a saturable transformer used in the deflection yoke device of Fig. Fig. 2 is a perspective view showing a pair of drum-shaped cores and magnets of the saturable transformer shown in Fig. 2, Fig. 4 is a characteristic diagram showing changes in inductance of the saturable transformer shown in Fig. 2, and Fig. 5 is a diagram showing trilemma misconvergence. Figure 6 shows the pattern on the screen. Figure 6 shows the differential current for a pair of horizontal deflection coils required to correct trilemma misconvergence. Figure 7 shows the quadrupole correction magnetic field to correct trilemma misconvergence. , FIG. 8, and FIG. 9 are a circuit connection diagram and a schematic configuration diagram showing a conventional deflection yoke device. LH ₁ , LH ₂ : horizontal deflection coil, Lv: vertical deflection coil, ST ₁ , ST ₂ : saturable transformer,
Lv ₁ , Lv ₂ : Control coil, Lh ₁ , Lh ₂ ,
Lh ₃ , Lh ₄ : controlled coil, C ₁ , C ₂ : drum-shaped core, Mg ₁ : magnet, B ₁ : bobbin.

Claims (1)

[Scope of utility model registration request] A three-electron gun for in-line color cathode ray tubes, which has a pair of saddle-shaped horizontal deflection coils and a toroidal-wound or saddle-shaped vertical deflection coil connected in parallel, and in which the horizontal deflection magnetic field is pincushion-shaped and the vertical deflection magnetic field is barrel-shaped. In the self-convergence type deflection yoke device of Magnetized magnets are connected with the same polarity, and a pair of controlled coils are wound around the drum-shaped core so that the generated magnetic fields are in opposite directions, and the coils are wound between the larger brim of the drum-shaped core. a first and a second saturable transformer having a configuration in which a control winding is wound through a bobbin, and the pair of controlled windings of the first saturable transformer are connected in series. A controlled winding of the second saturable transformer is further connected in series with one of the horizontal deflection coils, and the pair of controlled windings of the second saturable transformer are connected in series so that the series-connected controlled winding is connected in series with one of the horizontal deflection coils. further connected in series with the other horizontal deflection coil,
Both control windings of the saturable transformer are connected in series and further connected in series with the vertical deflection coil, and the magnetic fields generated by both control coils are in opposite directions with respect to the direction of the magnetic field by the magnet. A deflection yoke device comprising: