Coil with shielding function and magnetic element

A technology of magnetic components and coils, applied in coil manufacturing, preventing/reducing unwanted electric/magnetic influences, transformer/inductor coils/windings/connections, etc., can solve the problem of limited electromagnetic interference shielding effect and inability of secondary coils 12 Isolation and other problems, to achieve the effect of improving window utilization, reducing volume, and reducing electromagnetic interference
CN101908409AActive Publication Date: 2010-12-08DELTA ELECTRONICS INC
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DELTA ELECTRONICS INC
Publication Date
2010-12-08

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Abstract

The invention discloses a coil with a shielding function and a magnetic element. The coil with a shielding function comprises at least one insulated lead and an electromagnetic interference shielding layer, wherein the insulated lead is wound to form a winding part and is provided with a first coil outlet section and a second coil outlet section; the winding part is provided with a through hole; and the electromagnetic interference shielding layer is formed on the winding part so as to cover the insulated lead and is provided with a projection on the lateral surface of the winding part as well as a radial clearance to enable the electromagnetic interference shielding layer to be a non-conductive loop, therefore, the coil has the electromagnetic interference shielding function. The coil with the shielding function can effectively reduce the electromagnetic interference of the magnetic element, improve the utilization rate of a window of a magnetic core and also reduce the volume of the magnetic element.
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Description

technical field

[0001] The invention relates to a coil and a magnetic element, in particular to a coil and a magnetic element with a shielding function. Background technique

[0002] In switching power systems, magnetic components such as transformers and inductors are very important. The manufacture of this type of magnetic element can directly wind insulated wires, such as single-layer insulated wires or triple-layer insulated wires, on the magnetic core (magnetic core), or first wind the insulated wires into a wire cake shape or wrap The insulated wire is wound on the winding area of ​​the bobbin, and then assembled with the magnetic core. Due to the use of switching elements in the switching power supply system, there is a problem of electromagnetic interference (EMI). Electromagnetic interference will interfere through conduction and radiation, and even damage other electronic components or electronic equipment. Magnetic components, especially transformers, are one of...

Claims

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