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1. 发明授权

US5877666A Stackable, passively-tunable, cost-reduced inductor 失效
标题翻译：可堆叠，被动调谐，成本降低的电感
公开(公告)号：US5877666A
公开(公告)日：1999-03-02
申请号：US815618
申请日：1997-03-12
申请人： David Wilfred Johnson, Jr. , David A. Norte , John Thomson, Jr.
发明人： David Wilfred Johnson, Jr. , David A. Norte , John Thomson, Jr.
IPC分类号： H01F17/00 , H01F17/06 , H01F27/28 , H01F17/30
CPC分类号： H01F17/0006 , H01F17/062
摘要： An inductor (100) optimized for surface-mount vacuum-pickup automated circuit assembly eliminates the expense of an inductor housing. The inductor has a hollow rectangular ferrite core (101) and a winding defined by a stripline (102) deposited on the core surface. Winding ends are formed by conductive vias (103) in the core that open onto the core surface, where they connect and mount the inductor to a circuit board (150). A flat sheet (104) adhered to one face of the core provides a surface for vacuum pickup and for labeling of the inductor. The core of a passively tuneable inductor (200) defines multiple unconnected winding segments (102-103). Segment ends mount the inductor to the circuit board and connect the segments to circuit board striplines (254) that are laid out in a pattern to interconnect a number of the segments into a winding. The inductor is tuned by changing the stripline layout and thereby varying the number of interconnected segments. The core of an electromagnetic interference choke (300) defines two windings wound axially in parallel and radially in opposite directions. The core of a choke (500) that permits stacked mounting defines additional conductive vias (503) for connecting the windings of a second choke (300) mounted on the core to the circuit board. For electromagnetic isolation, the windings of the two chokes are oriented orthogonally to each other.
摘要翻译：为表面贴装真空拾取自动化电路组件而优化的电感器（100）消除了电感器外壳的费用。电感器具有中空矩形铁氧体磁芯（101）和由沉积在磁芯表面上的带状线（102）限定的绕组。卷绕端由芯体中的导电通路（103）形成，该通孔穿过芯体表面，其中它们将电感器连接并安装到电路板（150）上。粘附在芯的一个表面上的平板（104）提供用于真空吸收和用于标记电感器的表面。可调谐电感器（200）的核心限定多个未连接的绕组段（102-103）。段末端将电感器安装到电路板上，并将这些段连接到以图案布置的电路板带状线（254），以将多个段互连成一个绕组。通过改变带状线布局并因此改变互连段的数量来调整电感器。电磁干扰扼流圈（300）的核心限定了沿相反方向平行并径向缠绕的两个绕组。允许堆叠安装的扼流器（500）的核心定义了用于将安装在芯上的第二扼流器（300）的绕组连接到电路板的附加导电通孔（503）。对于电磁隔离，两个扼流圈的绕组彼此正交定向。

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