KR100376995B1 - Improvement circuit of inner pin - Google Patents

Abstract

The present invention has a receiving groove 61 in which the vertical correction coil 30 winding the wire 70 to the drum core 10 is seated at the center portion of the base 60, and a pair of drum cores (11a, 11b) and 12a and 12b), the horizontal correction coils 40a and 40b wound around the wire 70 are seated to face the outside of the vertical correction coil 30, and the horizontal correction coils 40a and 40b. When the sintered magnets 20 and 21 are seated on the outside and the sintered magnets 20 and 21 are secondarily processed to adjust the inductance deviation, the mermaid deflection yoke is developed while providing a mermaid deflection yoke. Since the mermaid pin correction method using the coil magnetic field alone cannot be satisfied, there is an effect of improving the mermaid pin by additionally using a modulator called PCS.

Description

Mermaid pin improvement circuit {Improvement circuit of inner pin}

The present invention relates to a circuit for improving an INNER PIN applied to a CRT. In particular, while developing a RAC deflection yoke, a mermaid pin correction method using a conventional coil magnetic field cannot be satisfied. In addition, it is related to a mermaid pin improvement circuit for performing mermaid pin improvement.

In general, two mermaid arms are fixed to the middle part of the DY to satisfy the convergence characteristics by making the vertical magnetic field of the DY a strong barrel magnetic field, and the screen part of the mermaid arm is pinned to produce distortion characteristics. Calibrate

This mermaid arm is made of cold rolled silicon steel sheet.

Here, the convergence characteristic is to concentrate the three electron beams of red, green, and blue in one point on the surface of the shadow mask in the color TV receiver to prevent the color of the image from being distorted.

As shown in FIG. 1, a general deflection yoke includes a coil separator, that is, a coil separator 4, a horizontal coil 1 positioned on an inner circumferential surface of the coil separator 4, and a ferrite core 2 on an outer surface thereof. It consists of a vertical coil (3) to be mounted.

At this time, two mermaid arms IA are installed between the vertical coil 3 and the outer surface of the coil separator 4, and are installed so as to be biased toward the side closer to the electron gun than the screen side of the deflection yoke, as shown. do. The size of a conventional mermaid arm has a rectangular shape of about width (c) x length (a) x thickness (b) = 20 x 10 x 0.5 mm.

On the other hand, the mermaid arm (IA) is biased toward the electron gun side of the flat yoke, and a pin-shaped magnetic field must be generated toward the screen of the DY to reduce the E / W distortion among the screen characteristics. This is because a barrel-shaped magnetic field must be formed.

That is, since the mermaid arm is for strengthening the barrel type magnetic field, the mermaid arm is relatively biased toward the electron gun side. In addition, DY Mermaid arms are being used mainly in flat-panel yokes for large color monitors and multimedia.

On the other hand, as a correction method for the mermaid pin phenomenon generated by the mermaid arm, a conventional method using a coil magnetic field is used, but the above-described conventional technology encounters a limitation of correction.

An object of the present invention for solving the above problems is to improve the mermaid pin by additionally using a modulator (PCS), because the mermaid pin correction method using the coil magnetic field alone can not be satisfied while developing the RAC deflection yoke. To provide a mermaid pin improvement circuit to perform the.

1 is a structural cross-sectional view of a general deflection yoke,

2 is a plan view of a coil and a magnet built in a PCS device to be applied in the present invention;

3 is a perspective view showing the internal structure of the PCS device;

4 is an overlapping view for explaining overlapping characteristics of a vertical correction coil and a horizontal correction coil;

A feature of the mermaid pin improvement circuit according to the present invention for achieving the above object is a receiving groove in which the vertical correction coil 30 winding the wire 70 to the drum core 10 is seated at the central portion of the base 60. A horizontal correction coil 40a, 40b having a 61 and wound the wire 70 on a pair of drum cores (11a, 11b, 12a, 12b) is opposed to the outside of the vertical correction coil 30. The sintered magnets 20 and 21 are mounted on the outside of the horizontal correction coils 40a and 40b, and the sintered magnets 20 and 21 are secondarily processed to adjust the inductance deviation.

The above object and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

2 is a plan view of a coil and a magnet built in a PCS device to be applied in the present invention, Figure 3 is a perspective view showing the internal structure of the PCS device, Figure 4 is to explain the overlapping characteristics of the vertical correction coil and the horizontal correction coil This is a nesting diagram.

Horizontally corrected coils in which the sintered magnets 20 and 21 wind the wire 70 in drum cores (11a, 11b, 12a, 12b) on both sides opposite to the lengthwise direction of the receiving groove 61. 40a and 40b are built so that the case 50 is assembled to be assembled to the base 60 in which the vertical auxiliary coil 30 winding the wire 70 to the drum core 10 is built so as to face each other. do.

In more detail, the receiving groove 61 is formed on the base 60 so that the correction coils 30, 40a and 40b and the sintered magnets 20 and 21 are seated in the receiving groove 61.

The base 60 and the case 50 are coupled to be assembled so that the base 60 and the case 50 can be opened and closed with each other.

The vertical correction coil 30 is formed by winding the wire 70 to the drum core 10 of ferrite material and is located at the center of the base 60.

The horizontal correction coils 40a and 40b are formed by winding a wire 70 around a pair of drum cores (11a, 11b, 12a and 12b), respectively, but one drum core 11a as one wire 70. Alternatively, since the wires are wound around 12a) and then continuously wound on the other drum cores 11b or 12b, the horizontal correction coil 40a is a type in which the wires 70 wound on the drum cores 11a and 11b are connected in series. The same applies to the horizontal correction coil 40b.

At this time, the inductance value of each of the horizontal correction coils 40a and 40b is the same or different in the same number of windings so that a good convergence correction can be performed.

The horizontal correction coils 40a and 40b are disposed to face the outside of the vertical correction coil 30 positioned at the center portion of the horizontal groove 61 of the base 60.

The sintered magnets 20 and 21 are positioned to face the outer side of the horizontal correction coils 40a and 40b to form a PCS device.

That is, the arrangement order of the correction coils 30a, 40a, 40b and the sintered magnets 20, 21 located in the receiving groove 61 on the base 60 is sintered magnet 20, horizontal coil 40a, and vertical. In order of the correction coil 30, the horizontal correction coil 40b, and the sintering magnet 21, the convergence can be corrected by the electrical action thereof.

In FIG. 4, if no current flows through the vertical correction coil 30, the inductance values of the horizontal correction coils 40a and 40b are greatly influenced by the initial permeability μi of the drum core and the strength of the magnet magnetic field.

Here, if the permeability and the strength of the magnetic field are equal or approximate, the inductance values of each of the horizontal correction coils 40a and 40b are equal to or approximated at 0 (A).

Furthermore, in FIG. 4, when a current flows in the vertical correction coil 30, the inductance values of the horizontal correction coils 40a and 40b are increased or decreased. However, the direction in which the horizontal correction coils 40a and 40b are increased or decreased is changed differently. To this end, the winding direction of the wire 70, the direction of the magnetic field of the sintered magnets 20 and 21, the direction of current flow, and the like may be reversed.

At this time, the amount of correction of the screen is determined by the difference between the maximum value and the minimum value of inductance (ΔL = Ih2-Ih1) when saturated.

While the invention has been shown and described in connection with specific embodiments thereof, it is well known in the art that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the claims. Anyone who owns it can easily find out.

If the mermaid pin improvement circuit according to the present invention operates as described above, the mermaid deflection yoke is developed and the mermaid pin correction method using the coil magnetic field alone cannot be satisfied. Therefore, an additional modulator (PCS) is used. This has the effect of performing the improvement of the mermaid pin.

Claims (1)

The vertical correction coil 30 which wound the wire 70 to the drum core 10 has the accommodating groove 61 which is seated in the center part of the base 60, and a pair of drum cores (11a, 11b), Horizontal correction coils 40a and 40b wound around wires 12a and 12b are seated opposite to the vertical correction coil 30 and sintered outside the horizontal correction coils 40a and 40b. Mermaid pin improvement circuit, characterized in that the magnet (20, 21) is seated, and the sintered magnet (20, 21) is secondary processed to adjust the inductance deviation.