Horizontal deflection impedance converter module for high-definition picture tubes

Abstract

The invention provides a horizontal deflection impedance converter module for high-definition picture tubes. The module comprises an impedance transformer and a printed circuit board (PCB), wherein the impedance transformer is inserted into the PCB to form the module. By the scheme, the problem that the high-definition picture tubes of 100Hz cannot be matched with ordinary television movement boards in post cathode ray tube (CRT) times is effectively solved, and a high-definition television movement board is replaced by the ordinary television movement board by the combination of the impedance matching transformer wound by an E-type magnetic core and the PCB, thereby realizing matching with the high-definition picture tube of 100Hz, namely changing the horizontal inductance of the high-definition picture tube of 100Hz into the inductance of an ordinary picture tube. Such a design can improve production efficiency, reduce cost, achieve extremely good horizontal line effects, bring convenience to the regulation of pincushion correction, and further provide a simple and practical method for maintainers incapable of repairing the high-definition television movement boards.

Description

technical field [0001] The invention relates to the technical field of a CRT color TV line deflection circuit matching assembly, in particular to a line deflection impedance converter module for a high-definition picture tube. Background technique [0002] With the rapid development of flat-panel TVs, major domestic TV manufacturers withdrew from the CRT color TV market and no longer produced CRT color TVs. Various problems were caused by the withdrawal of various manufacturers from the CRT color TV market: 1. A considerable part of the inventory has a line inductance of only 0.2mH For high-definition (100Hz) picture tubes between ~0.3mH, the connection mode of the four sets of wires between H+ and H- is parallel connection; It is lacking and difficult to repair. Maintenance personnel can only replace the core board directly. However, due to the high cost of the high-definition core board and its complicated functions, it is inconvenient to produce, so the second- and third-...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of flat-panel TVs, major domestic TV manufacturers withdrew from the CRT color TV market and no longer produced CRT color TVs. Various problems were caused by the withdrawal of various manufacturers from the CRT color TV market: 1. A considerable part of the inventory has a line inductance of only 0.2mH For high-definition (100Hz) picture tubes between ~0.3mH, the connection mode of the four sets of wires between H+ and H- is parallel connection; It is lacking and difficult to repair. Maintenance personnel can only replace the core board directly. However, due to the high cost of the high-definition core board and its complicated functions, it is inconvenient to produce, so the second- and third-line brand manufacturers that are still producing CRT color TVs do not have any production For the high-definition core board that can match it, a few experienced technicians changed the line deflection from the original parallel connection to series connection, but it is quite difficult even for experienced technicians to change it, let alone those ordinary repairs personnel; and the line deflection is changed from the original parallel connection to series line linear distortion, and pincushion correction is difficult to adjust, so the matching effect is very poor

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