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公开(公告)号：US5871662A
公开(公告)日：1999-02-16
申请号：US978963
申请日：1997-11-26
IPC分类号： H01F1/34 , H01F27/255 , C04B35/30
CPC分类号： H01F27/255 , H01F1/344
摘要： The invention describes a transformer core of NiZn ferrite material. Said transformer core exhibits low overall losses when it is used in a transformer. Said low losses are attained if the majority of the grains of the sintered ferrite material have a monodomain structure. This is the case if the average grain size is smaller than 2.8 microns. The average grain size of the sintered material preferably ranges of from 1.3 to 2.6 microns. The .delta.-value is preferably less than 4 nm.
摘要翻译： 本发明描述了NiZn铁氧体材料的变压器芯。 所述变压器铁芯在变压器中使用时总体损耗较小。 如果烧结铁氧体材料的大部分晶粒具有单畴结构，则可获得所述低损耗。 如果平均晶粒尺寸小于2.8微米，则是这种情况。 烧结材料的平均晶粒尺寸优选为1.3至2.6微米。 Δ值优选小于4nm。
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公开(公告)号：US6045751A
公开(公告)日：2000-04-04
申请号：US105820
申请日：1993-08-11
CPC分类号： B22F1/0003 , H01F1/0577
摘要： A description is given of a method of manufacturing a permanent magnet on the basis of NdFeB. In this method a powder of NdFeB and a powder of a Ga alloy, consisting mainly of Ga and one or more than one rare earth metals (RE), is mixed to form a mixture which is subsequently aligned, compressed and sintered. Such alloys can be ground into homogeneous, fine-grain powders in a simple manner. The composition of the alloy preferably corresponds to the formula REGa.sub.x, where x=1 or x=2. Alloys which are very suitable contain Dy and/or Tb as the rare earth metal.
摘要翻译： 以NdFeB为基础制造永久磁铁的方法进行说明。 在该方法中，将主要由Ga和一种或多于一种稀土金属（RE）组成的NdFeB粉末和Ga合金粉末混合形成随后对准，压缩和烧结的混合物。 这种合金可以以简单的方式研磨成均匀的细粒粉末。 合金的组成优选对应于式REGax，其中x = 1或x = 2。 非常合适的合金含有Dy和/或Tb作为稀土金属。
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公开(公告)号：US5915163A
公开(公告)日：1999-06-22
申请号：US759666
申请日：1996-12-06
申请人： Arjan Noordermeer , Marco Schmidt
发明人： Arjan Noordermeer , Marco Schmidt
IPC分类号： H01S5/00 , H01L21/301 , H01L21/3205 , H01L33/00 , H01S5/02 , H01S5/042 , H01L21/302
CPC分类号： H01S5/0201 , H01L2224/48091 , H01L2224/73265 , H01S5/0224 , H01S5/02272 , H01S5/0425 , H01S5/227
摘要： Method of manufacturing a laser which is provided with a metal layer and a solder layer as early as in the wafer stage, and which is particularly suitable for so-called epi-down final mounting. An individual laser is obtained in that first a block comprising a row of lasers is formed from the wafer by cleaving, and subsequently the individual lasers are separated from the block. Strip-shaped openings are formed in the metal layer at the areas of end faces to be formed before the block is formed, and subsequently a score is provided in the surface of the semiconductor body in each opening in the longitudinal direction thereof, whereupon the solder layer is provided over the metal layer and over at least part of the openings therein, and the block is subsequently formed through cleaving at the areas of and in the direction of the scores.
摘要翻译： 制造激光器的方法，该激光器早在晶片台设置有金属层和焊料层，并且特别适用于所谓的下放最终安装。 获得单个激光器，其中首先，通过切割从晶片形成包括一排激光器的块，随后将各个激光器与块分离。 在形成块之前在形成的端面区域的金属层中形成带状开口，随后在其长度方向上的每个开口中的半导体本体的表面上设置刻痕，由此焊料 层设置在金属层之上并且在其中的至少部分开口的上方，并且块随后通过在刻痕的方向和区域上的分裂而形成。
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4.发明授权Sintered transformer core of MnZn-ferrite and a transformer comprising such a core 失效MNZN-FERRITE的烧结变压器芯和包含这样一个核心的变压器
公开(公告)号：US5138546A
公开(公告)日：1992-08-11
申请号：US710270
申请日：1991-06-04
IPC分类号： C04B35/26 , H01F1/34 , H01F3/08 , H01F27/255
CPC分类号： C04B35/2658 , H01F1/344 , H01F27/255
摘要： The invention relates to a sintered transformer core of MnZn-ferrite material, the initial permeability of which ranges between 10 and 1000. Said transformer cores preferably have an average particle size which ranges between 0.05 and 2.0 .mu.m. The transformer cores according to the invention exhibit surprisingly low overall losses when operating in the frequency range of 2 MHz and higher. Such transformer cores can be very advantageously used in transformers operated in said frequency range, such as SMPS transformers.
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