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EI type common-differential-mode filter

A filter, I-type technology, applied in the direction of transformer/inductor magnetic core, transformer/inductor parts, transformer/inductor coil/winding/connection, etc., can solve the problems of mutual substitution and reduce production cost , the effect of simple structure

Pending Publication Date: 2020-05-26
WEIHAI DONGXING ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional common-mode filter and differential-mode filter play their respective roles in the circuit as two independent components and cannot replace each other

Method used

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  • EI type common-differential-mode filter
  • EI type common-differential-mode filter
  • EI type common-differential-mode filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] As shown in the figure, there is a skeleton 100 and a magnetic core, the magnetic core is an E-shaped magnetic core, two E-shaped magnetic cores are inserted at both ends of the skeleton 100, and an upper groove 101 and a middle groove 102 are processed around the outer wall of the skeleton 100 And the lower slot 103, the upper slot 101 and the lower slot 103 are wound with an upper winding 112 and a lower winding 113 with the same number of turns, and one side of the inner side wall of the middle slot 102 is processed with a hollow slot 104, and the hollow slot 104 is installed There is an I-type magnetic core 109 .

[0013] The specific manufacturing process of the present invention is as follows: Firstly, copper wires with the same number of turns are wound in the upper slot 101 and the lower slot 103 of the skeleton 100, thereby winding the upper winding 112 and the lower winding 113, and no copper wire is wound in the middle slot 102. , and one side of the middle s...

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PUM

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Abstract

The invention relates to an EI type common-differential-mode filter, and belongs to the field of transformers. The filter is provided with a framework and magnetic cores, wherein the magnetic cores are E-shaped magnetic cores, the two E-shaped magnetic cores are inserted into the two ends of the framework, an upper groove, a middle groove and a lower groove are machined around the outer side wallof the framework, an upper winding and a lower winding with the same number of turns are wound in the upper groove and the lower groove through copper wires, a hollowed-out groove is machined in one side of the inner side wall of the middle groove, and an I-shaped magnetic core is mounted in the hallowed-out groove. The filter has the beneficial effects that the structure is simple, a common-modefilter and a differential-mode filter which work independently in a circuit originally and play functions respectively are combined into a common-differential-mode filter, one EI type common-differential-mode filter is used for replacing the original common-mode filter and the original differential-mode filter which work independently, the EI type common-differential-mode filter adapts to the miniaturization and integration development trend of an existing power supply, and the production cost of magnetic component manufacturers is reduced at the same time.

Description

technical field [0001] The invention relates to the field of transformers, in particular it is an EI type common-differential mode filter. Background technique [0002] As we all know, in order to reduce the impact of grid voltage fluctuations on power supply work, it is necessary to configure a common-mode filter in the circuit to eliminate the interference of the common-mode signal and a differential-mode filter to eliminate the interference of the differential-mode signal. The traditional common-mode filter and differential-mode filter play their respective roles in the circuit as two independent components and cannot replace each other. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the present invention provides an EI type common-differential mode filter, which combines the common-mode filter and the differential-mode filter that work independently in the circuit into a common-differential mode filter , Reduce the number of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/26H01F27/30H01F17/04
CPCH01F27/266H01F27/306H01F17/04
Inventor 王秀杰杜晓军许全武
Owner WEIHAI DONGXING ELECTRONICS