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Common mode filter for inhibiting conducted electromagnetic interference

A technology of conducting electromagnetic interference and common mode filter, which is applied in the field of filters, can solve problems such as poor filtering effect and circuit board damage, and achieve the effect of reducing production cost and design difficulty

Inactive Publication Date: 2010-10-13
苏州泰思特电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0024] The invention provides a common-mode filter for suppressing conducted electromagnetic interference, the purpose of which is to avoid the common-mode noise of conducted electromagnetic interference caused by unknown noise sources, avoid circuit board damage caused by repeated welding of circuit boards and poor filtering effect, etc. question

Method used

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  • Common mode filter for inhibiting conducted electromagnetic interference
  • Common mode filter for inhibiting conducted electromagnetic interference
  • Common mode filter for inhibiting conducted electromagnetic interference

Examples

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Embodiment

[0045] Embodiment: a common mode filter for suppressing conducted electromagnetic interference,

[0046] It includes: a substrate 1, which is provided with at least six live wire jacks 2, at least six neutral wire jacks 3, and at least three ground wire jacks 4;

[0047] At least three live wire jacks 2 are connected in series through wires to form a first live wire jack row 5, and a live wire jack on the power grid side of the first live wire jack row 5 is used as a live wire connection terminal for the power grid;

[0048]At least three live wire jacks are connected in series through wires to form a second live wire jack row 6, and a live wire jack on the load side of the second live wire jack row 6 is used as a load live wire connection terminal;

[0049] The first inductor 7 is arranged between the live wire jack on the load side of the first live wire jack row and the live wire jack on the grid side of the second live wire jack row;

[0050] A first neutral line jack row...

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Abstract

The invention discloses a common mode filter for inhibiting conducted electromagnetic interference. At least three live wire jacks are connected in series through leads to form a first live wire jack row; at least three live wire jacks are connected in series through leads to form a second live wire jack row; a first inductor is arranged between the live wire jack on the first live wire jack row load side and the live wire jack on the second live wire jack row power grid side; at least three neutral wire jacks are connected in series through leads to form a first neutral wire jack row; at least three neutral wire jacks are connected in series through leads to form a second neutral wire jack row; a second inductor is arranged between the live wire jack on the first neutral wire jack row load side and the live wire jack on the second neutral wire jack row power grid side; and at least three ground wire jacks are connected in series through leads to form a ground wire jack row. Aiming at conducted electromagnetic interference common mode noise caused by an unknown noise source, the common mode filter avoids the problems of circuit board damage caused by repeatedly welding a circuit board, poor filter effect and the like.

Description

technical field [0001] The invention relates to a common-mode filter for suppressing conduction electromagnetic interference, in particular to a filter for conduction electromagnetic interference noise caused by an unknown noise source, which needs to pass multiple tests of inductance and capacitance parameters. Background technique [0002] The filter used to suppress conducted electromagnetic interference noise is actually a low-pass filter, which transmits DC or low-frequency power to the device without attenuation, but greatly attenuates the electromagnetic interference signal propagated by the power supply, protecting the device from disturbed. At the same time, the electromagnetic interference signal generated by the equipment itself can also be suppressed to prevent it from entering the power supply and polluting the electromagnetic environment. Through the filter circuit, the noise level generated by the electromagnetic noise generated by the power electronic device...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/01
CPCY02E40/40
Inventor 赵阳黄学军戎融董颖华陆婋泉
Owner 苏州泰思特电子科技有限公司
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