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Common and differential mode inductor

A technology of differential mode inductors and magnetic cores, applied in the field of common differential mode inductors, can solve the problems of common differential mode inductors that are difficult to process, prone to processing defects, not suitable for mass production, etc., and achieve a reasonable skeleton structure design, excessively stable, small range of effects

Inactive Publication Date: 2012-09-05
SHANGHAI HUIHUI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a common differential mode inductor to solve the technical problems of the prior art that the common differential mode inductor is difficult to process, prone to processing defects, poor anti-interference performance and not suitable for mass production

Method used

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  • Common and differential mode inductor

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Embodiment 1

[0032] see Figure 3 to Figure 5 , a common-differential mode inductor. Including: vertical skeleton 31, copper wire winding 32, 33, power magnetic core 34, high magnetic permeability core 35, 36 and stainless steel magnetic core buckle 37, these power magnetic core 34 and high magnetic permeability core 35, 36 are all It is a U-shaped core. The vertical frame 31 adopts a partition structure, which includes long partitions 311, 312 and short partitions 313, 314. The long partitions 311, 312 are arranged in the middle of the vertical frame 31, and a power magnetic core slot 315 is formed between them. The short partitions 313, 314 are arranged on both sides of the long partitions 311, 312 respectively, and respectively form the winding slots 316 for winding the copper wire windings 32, 33 with the long partitions 311, 312 and the vertical frame main body. The frame 31 is also provided with a central through hole 317 in the horizontal direction. The copper wire windings 32, 3...

Embodiment 2

[0037] See 7 to Figure 8 , a common-differential mode inductor, comprising: a horizontal skeleton 71, copper wire windings 72, 73, a power magnetic core 74, a high magnetic permeability core 75, 76 and a stainless steel magnetic core buckle (not shown in the figure), the These power magnetic cores 74 and high magnetic permeability cores 75, 76 are all U-shaped magnetic cores. The horizontal frame 71 adopts a partition structure, which includes two partitions 711, 712. The partitions 711, 712 are longitudinally arranged in the middle of the horizontal frame, and a power magnetic core slot 713 is formed between the two partitions, and is connected to the horizontal frame 31. The main body forms a winding slot 714 for winding copper wires, and the horizontal skeleton 31 is also provided with a central through hole 715 in the transverse direction. The copper wire windings 72, 73 are symmetrically wound on the vertical frame 71, and the high magnetic permeability cores 75, 76 are...

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Abstract

The invention relates to a common and differential mode inductor which comprises a vertical frame, a plurality of copper wire windings, a power magnetic core, two high-conductivity magnetic cores and a magnetic core fastener, wherein the vertical frame is in a separation structure, a central through hole is arranged in the horizontal direction of the vertical frame, and an inserting groove of thepower magnetic core is arranged in the vertical direction of the vertical frame; the copper wire windings are symmetrically wound on the vertical frame at intervals; the two high-conductivity magnetic cores are respectively inserted into the central through hole; the magnetic core fastener is respectively connected with the two high-conductivity magnetic cores in a clamping way; and the power magnetic core is inserted into the inserting groove of the power magnetic core and is bonded with the two high-conductivity magnetic cores. The inductor of the invention has the advantages of good interference resistance, simple manufacturing processes, stable performance and small volume and is suitable for batch production.

Description

technical field [0001] The invention relates to a filter inductor, in particular to a common-differential mode inductor. Background technique [0002] With the popularization and development of switching electronic products, electromagnetic waves radiated and leaked by various electronic equipment have become an invisible pollution, and reducing the electromagnetic interference (EMI) of electronic equipment has become an increasingly concerned issue in the electronics industry. [0003] see figure 1 , which is a schematic diagram of a conventional anti-common mode and anti-differential mode interference filter circuit. The common mode inductor 10 and the differential mode inductor 11 are connected to the power input terminal of the electronic ballast (or switching power supply) 12, and are used for eliminating common mode interference and differential mode interference respectively. Since the common-mode inductor and the differential-mode inductor are used at the same time...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F17/04H01F27/26H01F27/30
Inventor 王照樑
Owner SHANGHAI HUIHUI ELECTRONICS