Polymer composition having positive temperature coefficient
characteristics
    12.
    发明授权
    Polymer composition having positive temperature coefficient characteristics 失效
    具有正温度系数特性的聚合物组合物

    公开(公告)号:US4732701A

    公开(公告)日:1988-03-22

    申请号:US934495

    申请日:1986-11-24

    CPC分类号: H01C7/027

    摘要: A polymer composition having positive temperature coefficient characteristics is described, comprising 100 parts by weight of a mixture consisting of from 40 to 90% by weight of a crystalline polymer and from 60 to 10% by weight of an electrically conductive powder and from 10 to 300 parts by weight of a semiconductive inorganic substance. This polymer composition can withstand high voltage and when used as a heat generator, produces a uniform distribution of heat and has a long service life. Thus the polymer composition is useful for production of an overcurrent protecting element and a heat generator.

    摘要翻译: 描述了具有正温度系数特性的聚合物组合物,其包含100重量份由40至90重量%的结晶聚合物和60至10重量%的导电粉末和10至300重量份的混合物 重量份的半导体无机物质。 该聚合物组合物可以承受高电压,并且当用作热发生器时,产生均匀的热分布并且具有较长的使用寿命。 因此,聚合物组合物可用于生产过电流保护元件和发热体。

    Semiconductor ceramic composition
    13.
    发明授权
    Semiconductor ceramic composition 失效
    半导体陶瓷组合物

    公开(公告)号:US4483933A

    公开(公告)日:1984-11-20

    申请号:US600336

    申请日:1984-04-13

    CPC分类号: H01C7/025 C04B35/4684

    摘要: A semiconductor ceramic composition of a barium titanate system comprises a main component containing a minor quantity of one or more semiconductor-forming elements, and additives of manganese oxides and silica incorporated therein, and is characterized by that the main component consists essentially of 30 to 95 mol % of BaTiO.sub.3, 3 to 25 mol % of CaTiO.sub.3, 1 to 30 mol % of SrTiO.sub.3 and 1 to 50 mol % of PbTiO.sub.3. The contents of manganese oxides and silica are 0.03 to 0.15 mol %, preferably, 0.03 to 0.10 mol % in terms of Mn, and 0.5 to 5 mol % in terms of SiO.sub.2, respectively, with respect to one mole of the main component. One or more semiconductor-forming elements are selected from the group consisting of rare earth elements, Nb, Bi, Sb, W and Th, and the content of the elements is 0.2 to 1.0 mol %.

    摘要翻译: 钛酸钡体系的半导体陶瓷组合物包括含有少量一种或多种半导体形成元素的主要成分,以及其中掺入的氧化锰和二氧化硅的添加剂,其特征在于主要成分基本上由30至95 的BaTiO 3的摩尔%,CaTiO 3为3〜25摩尔%,SrTiO 3为1〜30摩尔%,PbTiO 3为1〜50摩尔%。 相对于1摩尔的主成分,氧化锰和二氧化硅的含量分别为0.03〜0.15摩尔%,优选为0.03〜0.10摩尔%,Mn为0.5〜5摩尔%。 一种或多种半导体形成元素选自稀土元素,Nb,Bi,Sb,W和Th,元素含量为0.2〜1.0mol%。

    Multi-layered inductor array
    14.
    发明授权
    Multi-layered inductor array 有权
    多层电感阵列

    公开(公告)号:US06437677B1

    公开(公告)日:2002-08-20

    申请号:US09672744

    申请日:2000-09-28

    IPC分类号: H01F500

    CPC分类号: H01F27/2804 H01F17/0013

    摘要: A multi-layered inductor array is constructed to reduce and minimize variations in the inductance values and DC resistance values of a plurality of inductors contained in a multi-layered structure. In this multi-layered inductor array, four spiral inductors having an equal number of winding turns are aligned from the left end surface of the multi-layered structure to the right end surface thereof. In the direction in which the four spiral inductors are aligned, the lengths of the spiral portions of the inductors positioned at the central portion of the multi-layered structure are greater than those of the spiral portions of the spiral inductors positioned at both end portions thereof.

    摘要翻译: 构造多层电感器阵列以减少和最小化包含在多层结构中的多个电感器的电感值和DC电阻值的变化。 在这种多层电感器阵列中,具有相等数量绕组匝数的四个螺旋电感器从多层结构的左端表面到其右端表面对准。 在四个螺旋电感器对准的方向上,位于多层结构的中心部分的电感器的螺旋部分的长度大于位于其两端部的螺旋形电感器的螺旋部分的长度 。