KR970051792A - Deflection yoke with damping coil for removing impurity magnetic field - Google Patents

Abstract

SUMMARY OF THE INVENTION An object of the present invention is to provide a deflection yoke having an attenuation coil for removing an impurity field capable of removing an electromagnetic field radiated to the outside without affecting the deflection device of an electron beam. The present invention provides a saddle-type deflection yoke in which an end coil wound in a direction that does not affect vertical and horizontal deflection is formed on a front plate; An attenuation coil for canceling the magnetic field radiated from the end coil by forming a reverse magnetic field of the magnetic field radiated outwardly from the end coil; A power supply unit supplying current to the attenuation coil; The magnetic field radiated from the attenuation coil may include a ferrite board that absorbs a magnetic field radiated to the outside without offsetting the magnetic field radiated from the end coil. Accordingly, it is possible to remove the electromagnetic field radiated to the outside of the deflection yoke causing a malfunction of the peripheral device, it is also possible to suppress the radiation of the electronic plate harmful to the human body.

Description

Deflection yoke with damping coil for removing impurity magnetic field

As this is a public information case, the full text was not included.

Figure 2 is a side view of the deflection yoke with attenuation coil for removing impurity magnetic field according to the present invention.

Claims (4)

In order to horizontally and vertically deflect the direction of the electron beam emitted from the electron gun of the receiving tube and scanned on the screen, a horizontal deflection coil for deflecting the electron beam in a horizontal direction and a vertical deflection coil for deflecting the electron beam in the vertical direction are ring-shaped ferrite cores ( 50. The saddle formed on the front plate 40 has end coils 10 wound on the front plate 40 and wound in a direction that does not affect the vertical and horizontal deflections in order to wind the horizontal deflection coils and the vertical deflection coils many times in the same direction. (saddle) in the deflection yoke (A); An attenuation coil (110) for canceling the magnetic field radiated from the end coil (10) by forming a reverse magnetic field of a magnetic field radiated outwardly from the end coil (10); A power supply device 80 supplying a current to the attenuation coil 110; And among the magnetic field radiated from the attenuation coil (110), impurity magnetic field elimination, characterized in that it comprises a ferrite board 120 for absorbing the magnetic field radiated to the outside without canceling the magnetic field radiated from the end coil 10 Deflection yoke with damping coil. The method of claim 1; In order to effectively cancel the magnetic field radiated to the outside from the end coil 10, the attenuation coil 110 is predetermined in the outward direction from the end coil 10 on the front plate 40 of the deflection yoke A. A deflection yoke with an attenuation coil for removing impurity magnetic field, characterized in that formed at a point separated by a distance. The method of claim 1; The ferrite board 120 is formed in a ring shape so as to effectively absorb the electric field radiated from the damping coil 110 to the outside, and the damping coil 110 on the front plate 40 of the deflection yoke (A). A deflection yoke with an attenuation coil for removing impurity magnetic field, characterized in that it is installed at a point away from the outside by a predetermined distance. The method of claim 1 or 3; The ring-shaped ferrite core (50) and the ferrite board 120 is a deflection yoke is attached to the attenuation coil for removing the impurity magnetic field, characterized in that integrally manufactured. ※ Note: The disclosure is based on the initial application.