摘要:
A color display tube device includes a composite correction circuit having a series circuit of a first reactor coil and a first four-pole coil and a series circuit of a second reactor coil with a polarity opposite to that of the first reactor coil and a second four-pole coil, the two series circuits being connected in parallel, and a vertical control coil for applying a magnetic bias that changes in synchronization with a vertical deflection current to the first and second reactor coils. The composite correction circuit is connected in series to horizontal deflection coils. In the color display tube device using an in-line self-convergence system, it is made possible to correct a PQH mis-convergence and reduce pincushion distortion at the left and right occurring before correction by a monitor set while preventing deterioration of the focus performance.
摘要:
A pair of coma coils for correcting a VCR that is a positional displacement in a vertical axis direction of a center electron beam with respect to the center of a pair of side electron beams on a vertical axis in upper and lower portions on a screen are provided at a position in the vicinity of an end of a deflection yoke on an electron gun side. Assuming that a maximum value of the intensity of a vertical deflection magnetic field on a tube axis is HMAX, and the intensity of a vertical deflection magnetic field on the tube axis at the position where the pair of coma coils are arranged in the tube axis direction is HC, HC/HMAX≧0.8 is satisfied. Owing to this, high-order distortion of horizontal lines on a screen can be corrected.
摘要翻译:提供一对用于校正作为中心电子束的垂直轴方向相对于一对侧面电子束的中心在垂直轴上的上下部分在屏幕上的位置偏移的VCR 在电子枪侧的偏转线圈的端部附近的位置处。 假设管轴上的垂直偏转磁场的强度的最大值为H×MAX,并且在这一点上的管轴上的垂直偏转磁场的强度 在管轴方向上排列的线圈是H C C,H C C / H MAX MAX / / SUB >> = 0.8。 因此,可以校正屏幕上的水平线的高阶失真。
摘要:
On an outer circumferential surface of a neck portion of a funnel, a CPU having a pair of quadrupole magnets and a pair of bar-shaped magnets each having magnetic poles on both sides in a major axis direction are provided. The pair of bar-shaped magnets sandwich the neck portion substantially in an in-line direction of an in-line type electron gun, and are provided so that identical poles are opposed to each other, between an end plate of an insulating frame of a deflection yoke and the CPU at a distance from the end plate. In the case where a rotational shift of electron beams is caused, electron beams R and B are corrected so as to move upward and downward (or downward and upward) respectively by a quadrupole magnetic field generated by the quadrupole magnets. Then, the electron beams R and B are corrected so as to move downward and upward (or upward and downward) respectively by the quadrupole magnetic field generated by the pair of bar-shaped magnets. Thus, a misconvergence due to the rotational shift of the electron beams can be corrected.
摘要:
When a deflection yoke is provided by winding horizontal deflection coils so that right and left ends of its bend portion on a screen face side protrude farther toward the screen face side than the center of the bend portion does, works for attaching vertical deflection coils and a core to an insulating frame can be carried out stably. The insulating frame is resin-molded so that an opening on the screen face side is shaped along the bend portion on the screen face side of a pair of upper and lower horizontal deflection coils. Protrusions (convexes) are provided at four positions between right/left portion “A” in a X-axis (horizontal axis) direction and top/bottom portion “B” in a Y-axis (vertical axis) direction of a periphery of the opening on the screen face side of the insulating frame.
摘要:
A deflection yoke for color cathode ray tubes, the deflection yoke including a vertical deflection coil for generating a vertical deflecting magnetic field having a barrel-shaped distortion, and a horizontal deflection coil for generating a horizontal deflection magnetic field having a pin-cushion shaped distortion, a differential coil connected to the horizontal deflection coil, a pair of cores located in opposite positions at a smaller rim portion of the yoke, the cores being provided with coils for generating a quadripolar magnetic field, a pick-up coil magnetically coupled to the differential coil or the horizontal deflection coil, and a current waveform shaping circuit for supplying a current to the quadripolar magnetic field generating coils.
摘要:
A deflection yoke for color cathode ray tubes, the deflection yoke including a vertical deflection coil for generating a vertical deflecting magnetic field having a barrel-shaped distortion, and a horizontal deflection coil for generating a horizontal deflection magnetic field having a pin-cushion shaped distortion, a differential coil connected to the horizontal deflection coil, a pair of cores located in opposite positions at a smaller rim portion of the yoke, the cores being provided with coils for generating a quadripolar magnetic field, a pick-up coil magnetically coupled to the differential coil or the horizontal deflection coil, and a current waveform shaping circuit for supplying a current to the quadripolar magnetic field generating coils.
摘要:
A pair of velocity modulation coils are placed with a horizontal plane including a tube axis interposed therebetween, and a pair of magnetic substances are placed with a vertical plane including a tube axis interposed therebetween. A straight line portion of the velocity modulation coil extending substantially in parallel to the tube axis is placed between the magnetic substance and the tube axis. An interval D between the magnetic substance and the straight line portion is 1 to 3 mm. Assuming that the tube axis is a Z-axis, a size of the velocity modulation coil in a tube axis direction is L, and a position of an end of the velocity modulation coil on a side opposite to a phosphor screen in the tube axis direction is Z=0, a center point of the pair of magnetic substances in the tube axis direction is present in a range of Z=0.2×L to 0.9×L. Consequently, the sensitivity of velocity modulation can be enhanced while suppressing an increase in a driving power with a simple configuration.
摘要翻译:放置一对速度调制线圈,水平面包括插入其间的管轴,并且一对磁性物质以包括管轴在内的垂直平面放置。 基本上平行于管轴线延伸的速度调制线圈的直线部分被放置在磁性物质和管轴之间。 磁性体与直线部之间的间隔D为1〜3mm。 假设管轴为Z轴,则管轴方向的速度调制线圈的大小为L,速度调制线圈的与管轴方向的荧光屏相反一侧的端部的位置 Z = 0时,管轴方向上的一对磁性物质的中心点存在于Z = 0.2×L〜0.9×L的范围内。 因此,通过简单的结构,能够抑制驱动电力的增加,能够提高速度调制的灵敏度。
摘要:
The present invention aims to compensate for the variation in the magnetization of permanent magnets caused by the individual difference, and further to provide a deflection yoke and a CRT apparatus provided with the deflection yoke which maintain proper correction of raster distortion against temperature change of the apparatus. To accomplish these objects, in a correction unit 340 provided with the deflection yoke 30 of the CRT apparatus 1 according to the present invention, a magnetic substance 342 having an attribute in which its permeability changes with a negative temperature characteristic is attached to a permanent magnet 341 so as to cover at least one of both end faces 341a and 341b. Additionally, in the deflection yoke 30, a paired correction units 340 is symmetrically placed at the top and the bottom of the deflection yoke, opposite to each other in respect to the tube axis of the CRT 10.
摘要:
The invention provides a deflection yoke comprising: a funnel-shaped core (ii) being made of a magnetic material, (iii) having, on its inner wall, ridges each of which starts from the narrower end and extends toward the wider end for a part of the length of the core, the ridges being arranged circumferentially at intervals and thereby forming core slots, and (iv) in which the remaining inner wall near the wider end is smooth; a first deflection coil wound as partially guided by the core slots; second deflection coil positioned more inward than the first deflection coil; and an insulating frame that (i) is sandwiched between the first and second deflection coils, and (ii) has, in an area corresponding to the core's smooth area, guiding slots extending along the CRT axis direction and being arranged circumferentially, wherein the second deflection coil is wound as partially guided by the guiding slots.
摘要:
A deflection yoke device includes a deflection yoke for deflecting electron beams in horizontal and vertical directions, the electron beams being emitted from an electron gun of a color cathode ray tube; coma correcting coils positioned on an electron gun side of the deflection yoke so as to be opposed to each other in such a manner that the electron beams pass therebetween; and a pair of cores around which the coma correcting coils are wound, wherein a sliding mechanism is further provided for allowing each of the coma correcting coils to be slidable with respect to the corresponding core. Therefore, a misconvergence can be corrected by a simplified configuration without reducing a sensitivity of the coma correcting coils.