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    Production process for niobium powder
    2.
    发明授权
    Production process for niobium powder 有权
    铌粉生产工艺

    公开(公告)号：US07138004B2

    公开(公告)日：2006-11-21

    申请号：US10792576

    申请日：2004-03-04

    申请人： Kouichi Wada ,  Yasuo Tsumita ,  Toshiya Kawasaki ,  Kazumi Naito ,  Kazuhiro Omori

    发明人： Kouichi Wada ,  Yasuo Tsumita ,  Toshiya Kawasaki ,  Kazumi Naito ,  Kazuhiro Omori

    IPC分类号： B22F9/04

    CPC分类号： H01G9/0525 ,  B22F9/023 ,  B22F2998/10 ,  C22B34/24 ,  B22F9/04 ,  B22F1/0096

    摘要： A niobium hydride or niobium hydride alloy is ground at a temperature of −200 to 30° C. in the presence of a dispersion medium to obtain a niobium powder for capacitors, having a low oxygen content, the niobium powder for capacitors is granulated to obtain a niobium granulated product for capacitors, having an average particle size of 10 to 500 μm, the niobium powder or granulated powder for capacitors is sintered to obtain a sintered body, and a capacitor is fabricated by forming a dielectric material on the surface of the sintered body and providing another part electrode on the dielectric material, whereby a capacitor having good LC characteristics and less dispersed in the LC characteristics is obtained.

    摘要翻译： 在分散介质的存在下，在-200〜30℃的温度下研磨氢化铌或铌合金合金，得到氧含量低的电容器用铌粉末，将电容器用铌粉末造粒 将平均粒径为10〜500μm的电容器用铌粒状物进行烧结，制作电容器的铌粉末或造粒粉末，得到烧结体，在烧结体的表面形成电介质材料，制作电容器 并且在电介质材料上提供另一部分电极，由此获得具有良好的LC特性并且较少分散在LC特性中的电容器。

    Digital to analog converter using B spline function
    10.
    发明授权
    Digital to analog converter using B spline function 失效
    使用B样条函数的数模转换器

    公开(公告)号：US06639535B1

    公开(公告)日：2003-10-28

    申请号：US09623073

    申请日：2000-10-25

    申请人： Kazuo Toraichi ,  Kouichi Wada

    发明人： Kazuo Toraichi ,  Kouichi Wada

    IPC分类号： H03M166

    CPC分类号： H03M1/66

    摘要： A digital-analog converter for producing less distorted output waveforms without the need for an increase in the operating speed of components. A D/A converter 1 comprises a memory 10, an address counter 12, a B spline function generation circuit 14, four sampling function generation circuits 16, three delay circuits 18, four amplifiers 20, and three adding circuits 22, 24 and 26. Four items of digital data supplied one after another in the predetermined time interval T are stored in the memory 10. The gain of each of the four amplifiers 20 is set according to the corresponding digital data. The four sampling function generation circuits 16 generate signal waveforms of the sampling function, which appear individually in points a time T away from one another. The signal waveforms are amplified in the amplifier 20 and added to produce an analog signal associated with the interpolation value.

    摘要翻译： 数字模拟转换器，用于产生较小失真的输出波形，而不需要增加组件的运行速度。 AD / A转换器1包括存储器10，地址计数器12，B样条函数产生电路14，四个采样函数产生电路16，三个延迟电路18，四个放大器20和三个加法电路22,24和26。 在预定时间间隔T中一个接一个地提供的数字数据的项目被存储在存储器10中。四个放大器20中的每个的增益根据相应的数字数据被设置。 四个采样函数发生电路16产生采样功能的信号波形，它们以时间T彼此分开出现。 信号波形在放大器20中放大并相加以产生与内插值相关联的模拟信号。