Method for recovering resistance value of magnetic core of common-mode inductor

A technology of common-mode inductance and impedance value, which is applied in the field of common-mode inductance core processing, can solve the problems of rework, waste, and substandard performance of core A, and achieve the effects of ensuring production efficiency, restoring impedance value, and avoiding rework

Inactive Publication Date: 2019-04-09
北流市柯顺电子有限公司
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Problems solved by technology

After the core A is manufactured, the internal stress of the core A is not completely released. When measuring the impedance of the common mode inductor, there will often be a phenomenon of substandard performance. The magnetic core A with substandard performance needs to be reworked or even scrapped directly, which affects the production efficiency, resulting in great waste

Method used

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  • Method for recovering resistance value of magnetic core of common-mode inductor
  • Method for recovering resistance value of magnetic core of common-mode inductor

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the specific embodiments in the accompanying drawings.

[0018] refer to Figure 1-2 A method for recovering the impedance value of a common-mode inductance magnetic core, the method is to process the magnetic core in a mechanical deformation manner within the elastic deformation range of the magnetic core, so that the stress of the magnetic core is released, and the magnetic core of the recovered impedance value is obtained.

[0019] One way to process the magnetic core is to radially extrude the magnetic core to deform it and then restore the original shape until the number of extrusions reaches the preset number of extrusions. The preset number of extrusions can be set according to the deviation of the impedance value , the position of each extrusion can be different to ensure that the core stress is fully released, and the extrusion process cannot destroy the solder joints on the outer layer o...

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Abstract

The invention discloses a method recovering resistance value of a magnetic core of a common-mode inductor. According to the method, the magnetic core is processed within an elastic formation range ofthe magnetic core by a mechanical deformation mode, so that the stress of the magnetic core is released to obtain the magnetic core with recovered resistance value. By the method, the rework of the magnetic core can be prevented, the production efficiency is ensured, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of common-mode inductor magnetic core processing, and more specifically, relates to a method for recovering impedance value of a common-mode inductor magnetic core. Background technique [0002] The core of the common mode inductor is as figure 1 , 2 As shown, the magnetic core A is composed of a magnetic coil B made of multi-layer magnetic permeable material. After the core A is manufactured, the internal stress of the core A is not completely released. When measuring the impedance of the common mode inductor, there will often be a phenomenon of substandard performance. The magnetic core A with substandard performance needs to be reworked or even scrapped directly, which affects the Production efficiency, resulting in great waste. Contents of the invention [0003] The technical problem to be solved by the present invention is to solve the above-mentioned deficiencies in the prior art. The present inve...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/02
CPCH01F41/0206
Inventor 左海军
Owner 北流市柯顺电子有限公司
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