The invention discloses an ultra-thin common differential mode filter, which comprises a housing and a magnetic core. The housing has an installation groove. The magnetic core is arranged in the installation groove. The magnetic core includes a mouth-shaped magnetic core and an I-shaped insulating magnetic core. The two opposite sides of the mouth-shaped magnetic core are each wound with a coil winding in one layer, and the I-shaped insulating magnetic core is arranged in the mouth-shaped magnetic core. The magnetic core is located between two coil windings, and the outer shell is provided with pins on both sides of the corresponding coil winding ends, and the lead-out wires at both ends of the coil winding are fixed on the pins. The invention places the type I insulating core in the middle of the lip-shaped core, thus forming a magnetic circuit, which can enhance the leakage inductance and help the line to obtain a high leakage inductance value for differential mode signals; installs a slot on the shell so that the core is fitted in it, which is conducive to reducing the overall height; wraps the enameled wire on the lip-shaped core horizontally and tightly, avoids the overlap of enameled wires and reduces the finished product. Height.
【技术实现步骤摘要】
一种超薄型共差模滤波器
本专利技术涉及滤波器。
技术介绍
为了避免线路的EMI污染,为了符合国际标准,电源电路都会带有滤波元器件。目前主流的驱动电源都在向扁平化和小型化方向发展。
技术实现思路
本专利技术所要解决的技术问题就是提供一种超薄型共差模滤波器,适应目前主流的驱动电源的扁平化和小型化。为解决上述技术问题,本专利技术采用如下技术方案:一种超薄型共差模滤波器,包括外壳和磁芯,所述外壳具有安装槽,所述磁芯设于安装槽内,所述磁芯包括口字型磁芯和I型绝缘磁芯,所述口字型磁芯的其中两相对侧边上各绕设一线圈绕组,所述线圈绕组平排一层绕制,所述I型绝缘磁芯设于口字型磁芯内且位于两线圈绕组之间,所述外壳对应线圈绕组两端的两侧设有针脚,所述线圈绕组两端引出线固定在针脚上。优选的,所述I型绝缘磁芯为绝缘涂塑磁片或者镍锌磁片。优选的,所述针脚采用L型针。优选的,所述外壳的安装槽侧壁对应引出线引出位置设有引线槽。本专利技术采用的技术方案,具有如下有益效果:1、将I型绝缘磁芯放置于口字型磁芯的中间,这样形成磁性回路,可以增强漏感,利于线路获得一个高漏感值用于差模信号。2、外壳上开设安装槽,使磁芯正好安装其中,利于整体高度降低。3、由漆包线平排一层整齐绕制于口字型磁芯上,避免漆包线交叠,降低成品高度。附图说明下面结合附图和具体实施方式对本专利技术作进一步描述:图1为本专利技术的俯视图;图2为本专利技术的主视图;图3为本专利技术的侧视图。具体实施方式下面结合本专利技术实施例的附图对本专利技术实施例的技术方案进行解释和说明,但下述实施例仅为本专利技术的优选实施例,并非全部。基于实施方式 ...
【技术保护点】
1.一种超薄型共差模滤波器,其特征在于:包括外壳和磁芯,所述外壳具有安装槽,所述磁芯设于安装槽内,所述磁芯包括口字型磁芯和I型绝缘磁芯,所述口字型磁芯的其中两相对侧边上各绕设一线圈绕组,所述线圈绕组平排一层绕制,所述I型绝缘磁芯设于口字型磁芯内且位于两线圈绕组之间,所述外壳对应线圈绕组两端的两侧设有针脚,所述线圈绕组两端引出线固定在针脚上。
【技术特征摘要】
1.一种超薄型共差模滤波器,其特征在于:包括外壳和磁芯,所述外壳具有安装槽,所述磁芯设于安装槽内,所述磁芯包括口字型磁芯和I型绝缘磁芯,所述口字型磁芯的其中两相对侧边上各绕设一线圈绕组,所述线圈绕组平排一层绕制,所述I型绝缘磁芯设于口字型磁芯内且位于两线圈绕组之间,所述外壳对应线圈绕组两端的两侧设有针脚,所述线圈绕组...
【专利技术属性】
技术研发人员:王飞,周筱媛,沈利峰,
申请(专利权)人:江西欧美亚电子有限公司,
类型:发明
国别省市:江西,36
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