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Sunk plate type filter

A filter and sunken plate technology, which is applied in the field of sunken plate filters, can solve the problems of reduced thickness, large size, and many power filter coils of LED TVs and LED displays, so as to improve EMI suppression ability and improve Frequency characteristics, effect of reducing the number of coils

Inactive Publication Date: 2011-09-21
江苏泰昌电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many power filter coils inside the existing TV and the size is large, which restricts the reduction of the thickness of the LED TV and LED display.

Method used

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  • Sunk plate type filter
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] Such as figure 1 , 2 As shown, the filter includes a skeleton 1, and an outer edge 2 is arranged on four corners of the skeleton 1, and pins 3 are vertically connected to the outer edge 2; a circular groove is arranged in the middle of the skeleton 1, and a raised structure 4 is located In the middle of the groove, the magnetic core matches the shape of the groove and is set in the groove. The magnetic core is a ferrite core, which improves the magnetic permeability and can reduce the number of coil windings, thereby reducing the product quality. Thickness; the long axis distance of the raised structure 4 coincides with the length of the inner diameter of the magnetic core and the raised structure is connected with the magnetic core by means of glue, so as to realize the stability of the structure; the magnetic core is as long as the raised structure 4 The axi...

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PUM

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Abstract

The invention discloses a sunk plate type filter, comprising a framework, wherein four corners of the framework are provided with outer edges; pins are vertically connected with the outer edges; a groove is arranged in the middle of the framework; a raised structure is arranged in the middle of the groove; a magnetic core is arranged in the groove and connected with the raised structure; and coils are wound on the magnetic core and connected with the pins. The sunk plate type filter is thin in thickness and is embedded in a circuit board; the height is less than 8mm after the sunk plate type filter is mounted; in the filter, a ferrite core with high-magnetic permeability is adopted, thus increasing the magnetic permeability, reducing the cycles of windings and shortening the filter volume; and a butterfly-shaped threading mode is adopted for the filter, thus improving the frequency characteristics of products and strengthening the inhibition capacity of EMI (electro-magnetic interference).

Description

technical field [0001] The invention relates to a sunken plate filter. Background technique [0002] TV sets and monitors have developed from CRT TV sets, CRT monitors, LCD liquid crystal TVs, and LCD liquid crystal monitors to current LED TV sets and LED monitors through years of development. Using LED technology, it can produce thinner, brighter and clearer display effects than LCD, and has a wide range of application prospects. However, there are many power filter coils inside the existing television and the size is large, which restricts the reduction of the thickness of the LED television and the LED display. At the same time, due to the thinner products and more compact installation of various electronic components, the whole machine has higher requirements for EMI. At present, there is an urgent need for a filter that can meet the thinner design requirements of TVs and monitors and provide good EMI suppression effects. Contents of the invention [0003] Purpose of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/44
Inventor 朱锦良
Owner 江苏泰昌电子有限公司
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