TH14028B - The unit with a correction coil corrects distortion in cathode ray tube devices. - Google Patents

Abstract

The cathode ray tube device is arranged with a correction coil that corrects distortion that occurs in the image on the glare. Which was scanned by the beam of electrons Made by In this cathode ray tube device The rectification coil was held. Near the center And it is formed with a low inductance of 1mH or less that is electrically independent from the unit. Additionally, the rectification coil is connected to the supplied distortion correction current source. From the main current source It supplies electric current to the main coils and in the coils and generates a relatively uniform magnetic field by the Supplied from the current source, correcting distortion. First inductance That is connected to the bottle, the wire is magnetically connected to the Assemble the second inductance The rectifying coil is connected to the rectifying coil to compensate for the force. Induced electromagnet Which are created due to the connection of magnetic fields

Claims (8)

1.Colored cathode ray tube device consists of Origin path (25) for generating an electron beam, a path (27) with a center of emission For generating a magnetic field in which the iron, electron, trajectory (27) includes the main coils (30, 31), the screen (22) for emitting rays of light to form an image on it. As the shadow mask (23) is set up between the origin path (25) and the vacuum open cladding screen (20, 21, 24), where the origin path (25) is accepted there. 20, 21, 24) has an internal surface where the screen (22) is formed on it. First supply path (60) for supplying the primary current to the primary route (30, 31) of the primary route (27), corrective route (27) for correcting the ras distortion. The router that is swept on the screen (22) has a feature that The rectification path (27) includes the rectification coil (33, 34) that is electrically independent from the primary (30, 31) rectifying coil (33, 34). In line with the center The way And with an inductance of 1mH or less, the cathode tube device also consists of two (62) independent supply routes. From the first supply path (60) for supplying the rectifying current to the rectifying coil (33, 34) of the rectifying route (27), the second supply path (62), which makes the rectifying coil (33 , 34) generating a corrected magnetic field Relatively uniform distortion around the center of the rectification current 2. The chromatic cathode ray device according to claim 1 has features that also include The first inductance component (33, 37) that is connected to the primary (30, 31) inductance component in series.The second inductance component (30, 31) is connected to the correction coil (33, 34) In series, the first and second inductive components (33, 36, 37, 39) are magnetically connected in a direction in which the induced electromagnetic force is generated by the connected magnetic flux. The separation between the main and correction coil (30, 31, 33, 34) is compensated. 3. The chromatic cathode ray device, according to claim 2, has the characteristics that the components The first and second inductances (33, 36, 37, 39) are wound on the same magnetic material (54, 55). 4. The chromatic cathode ray device in claim 2 has the characteristics which include: A ring-shaped magnetic material (55) where at least one of the first and second inductance components (35, 36, 37, 39) is wound on it more than once to form a closed loop. 5. The color cathode ray tube device according to claim 2 has features that also With at least one (35, 36, 37, 39) of the first and second inductive components (35, 36, 37, 39) are connected. The waveform of the induced electromagnetic force Built as part of inductance components (38), electrical components (38) including resistors and / or capacitors. 6. The chromatic cathode ray device, according to claim 1, is characterized by that the primary coils (30, 31) have a linear primary coil (30) that generates a magnetic field for the electrons in a corresponding direction. Horizontal and vertical helical coils (31) that generate a magnetic field for the electrons in Vertical direction And the rectification coil (33, 34), the horizontal distortion correction coil (33) that is attached to the horizontal main coils (30) and the vertical distortion correction coil (34) at Fit the main coil vertically (31). 7. Color-cathode ray tube device according to claim 6, where the horizontal rod coils (30) generate a pincushion-shaped magnetic field and the vertical rod coils (31) will Creates a barrel-shaped magnetic field. 8. Color-cathode ray tube device according to claim 1, where each of the primary coils (30, 31) and the correction coils (33, 34) are formed by winding.