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    Mn-Zn ferrite and production process thereof
    4.
    发明授权
    Mn-Zn ferrite and production process thereof 失效
    锰锌铁氧体及其制备方法

    公开(公告)号：US06440323B1

    公开(公告)日：2002-08-27

    申请号：US09690902

    申请日：2000-10-18

    申请人： Osamu Kobayashi ,  Osamu Yamada ,  Kiyoshi Ito

    发明人： Osamu Kobayashi ,  Osamu Yamada ,  Kiyoshi Ito

    IPC分类号： B22F100

    CPC分类号： C04B35/265 ,  C01G49/009 ,  C01P2002/32 ,  C01P2002/52 ,  C04B35/2658 ,  H01F1/344

    摘要： This invention provides a Mn—Zn ferrite which has a high electrical resistance and can sufficiently satisfy the use in a high frequency region exceeding 1 MHz. This invention further provides a production process of the Mn—Zn ferrite in which mixed powder whose components are adjusted so as to have a basic component composition containing 44.0 to 50.0 mol% Fe2O3, 4.0 to 26.5 mol % ZnO, 0.1 to 8.0 mol % one or two from TiO2 and SnO2 and the remainder consisting of MnO, and further to contain 0.01 to 2.00 mass % one or more of CoO, NiO, and MgO as additive is pressed, then sintered and cooled in the air or in an atmosphere containing some amount of oxygen.

    摘要翻译： 本发明提供一种具有高电阻并能够充分满足超过1MHz的高频区域的用途的Mn-Zn铁氧体。 本发明还提供了一种Mn-Zn铁氧体的制造方法，其中调整成分为具有含有44.0〜50.0摩尔％的Fe 2 O 3，4.0〜26.5摩尔％的ZnO，0.1〜8.0摩尔％的ZnO的碱性成分组成的混合粉末 或者两个来自TiO 2和SnO 2，剩余部分由MnO组成，并且还含有0.01至2.00质量％的一种或多种CoO，NiO和MgO作为添加剂，然后在空气中或在含有一部分的气氛中烧结和冷却 氧气量。

    Production process of Mn-Zn ferrite
    5.
    发明授权
    Production process of Mn-Zn ferrite 失效
    锰锌铁氧体的生产工艺

    公开(公告)号：US06576169B2

    公开(公告)日：2003-06-10

    申请号：US09989496

    申请日：2001-11-21

    申请人： Osamu Kobayashi ,  Osamu Yamada ,  Kiyoshi Ito

    发明人： Osamu Kobayashi ,  Osamu Yamada ,  Kiyoshi Ito

    IPC分类号： B29B1700

    CPC分类号： C01G49/009 ,  C01G49/0072 ,  C01P2004/61 ,  C04B35/2658

    摘要： A production process of a Mn—Zn ferrite enables wastes of sintered cores to be recycled without serious difficulties in sintering. The production process includes recycling a powder obtained by milling a sintered Mn—Zn ferrite, thereby obtaining a sintered core having a component composition including 44.0 to 49.8 mol % Fe2O3, 4.0 to 26.5 mol % ZnO, 0.02 to 1.00 mol % Mn2O3 and a remainder MnO.

    摘要翻译： Mn-Zn铁氧体的制造方法能够使烧结芯的废料再循环，而不会造成烧结的严重困难。 制造方法包括将通过研磨Mn-Zn系铁氧体烧结得到的粉末进行再循环，得到具有44.0〜49.8摩尔％Fe 2 O 3，4.0〜26.5摩尔％ZnO，0.02〜1.00摩尔％Mn 2 O 3的组分组成的烧结芯，其余部分 MnO。

    Signal discriminator
    8.
    发明申请
    Signal discriminator 审中-公开
    信号鉴别器

    公开(公告)号：US20050162234A1

    公开(公告)日：2005-07-28

    申请号：US10511308

    申请日：2003-09-22

    申请人： Osamu Kobayashi ,  Osamu Yamada ,  Yukio Suzuki ,  Kiyoshi Ito ,  Mayuka Shirai

    发明人： Osamu Kobayashi ,  Osamu Yamada ,  Yukio Suzuki ,  Kiyoshi Ito ,  Mayuka Shirai

    IPC分类号： C04B35/26 ,  H01F1/34 ,  H01F17/06 ,  H03H1/00 ,  H03B1/00

    CPC分类号： C04B35/2625 ,  C04B35/265 ,  C04B35/2658 ,  C04B35/6262 ,  C04B2235/3232 ,  C04B2235/3262 ,  C04B2235/3267 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3293 ,  C04B2235/5436 ,  C04B2235/96 ,  H01F1/344 ,  H01F17/06 ,  H01F2017/065

    摘要： A signal discriminator is provided which leverages variation of permittivity of Mn—Zn-based ferrite. The signal discriminator comprises a soft magnetic material which has a capacitive reactance C, and which has its complex relative permittivity varying with frequency such that the real part ε′ of the complex relative permittivity is large in a low frequency domain and small in a high frequency domain. In the reactance component X2, the capacitive reactance C is not negligible with respect to the inductive reactance L in a low frequency domain, in consequence of which the value of the reactance component X2 as a parallel circuit of the capacitive reactance C and the inductive reactance L is caused to decrease, and the influence of the capacitive reactance C is decreased in a high frequency domain. Consequently, the reactance component X2 decreases more than the reactance component X1 of a conventional soft magnetic material, and the X-R cross-point frequency moves to a frequency lower than a conventional X-R cross-point frequency XR1, whereby noises in a frequency band where noise components exist are converted into thermal energy thus reducing the waveform distortion originating from high frequency noises.

    摘要翻译： 提供了一种利用Mn-Zn基铁素体的介电常数变化的信号鉴别器。 信号鉴别器包括具有电容电抗C的软磁材料，其复相对电容率随频率而变化，使得复相对介电常数的实部ε在低频域中较大，而在高频下小 域。 在电抗分量X 2中，电容电抗C相对于低频域中的感抗L是不可忽略的，结果是电容电抗C和电容电抗C的并联电路的电抗分量X 2的值 导致电感L降低，并且电容电抗C的影响在高频域中降低。 因此，电抗分量X 2比常规软磁材料的电抗分量X 1降低，并且XR交叉点频率移动到低于常规XR交叉点频率XR 1的频率，从而频率上的噪声 噪声分量存在的频带被转换成热能，从而减少由高频噪声引起的波形失真。

    Common mode choke coil
    9.
    发明授权
    Common mode choke coil 失效
    共模扼流圈

    公开(公告)号：US06690257B2

    公开(公告)日：2004-02-10

    申请号：US10026631

    申请日：2001-12-27

    申请人： Osamu Kobayashi ,  Yukio Suzuki ,  Kiyoshi Ito

    发明人： Osamu Kobayashi ,  Yukio Suzuki ,  Kiyoshi Ito

    IPC分类号： H01F2728

    CPC分类号： H01F17/062 ,  H01F27/324 ,  H01F27/34 ,  H01F2017/0093 ,  H03H7/427 ,  H03H2001/005 ,  H03H2001/0092

    摘要： A common mode choke coil is described that is capable of providing improved characteristics at high frequencies. A bobbin having a toroidal core is mounted on a base. One coil is wound around one half of the bobbin and another coil is wound around the other half thereof. Both ends of each of the coils are connected to corresponding terminals provided on the base. The one coil has its one end connected to one of the terminals, is wound around one half of the bobbin from one side of the bobbin, finishes above the bobbin, that is, at the inner circumference of a core, leads out toward the other terminal provided on the base travelling along the outer face of a plate vertically mounted on the other side of the bobbin, and is connected to the terminal. The same applies to the other coil.

    摘要翻译： 描述了能够在高频率下提供改进的特性的共模扼流线圈。 具有环形芯的线轴安装在基座上。 一个线圈缠绕在线轴的一半上，另一个线圈缠绕在其另一半上。 每个线圈的两端连接到设置在基座上的相应的端子。 一个线圈的一端连接到一个端子，从绕线筒的一侧缠绕在线轴的一半上，在线轴的上方，即在芯的内圆周处，朝向另一端引出 端子，其设置在沿着垂直安装在筒管的另一侧的板的外表面上行进的基座上，并且连接到端子。 同样适用于另一个线圈。

    Mn-Zn ferrite and production process thereof
    10.
    发明授权
    Mn-Zn ferrite and production process thereof 失效
    锰锌铁氧体及其制备方法

    公开(公告)号：US06436308B2

    公开(公告)日：2002-08-20

    申请号：US09769296

    申请日：2001-01-26

    申请人： Osamu Kobayashi ,  Osamu Yamada ,  Kiyoshi Ito

    发明人： Osamu Kobayashi ,  Osamu Yamada ,  Kiyoshi Ito

    IPC分类号： B22F100

    CPC分类号： H01F1/344 ,  C04B35/265 ,  C04B35/2658

    摘要： The present invention provides a Mn—Zn ferrite having an electrical resistivity exceeding 1 &OHgr;m order and having a high initial permeability of 4000 or more at 100 kHz and 100 or more at 10 MHz. The main components of the Mn—Zn ferrite include 44.0 to 49.8 mol % Fe2O3, 15.0 to 26.5 mol % ZnO, 0.1 to 3.0 mol % CoO, 0.02 to 1.00 mol % Mn2O3, and the remainder MnO. The Mn—Zn ferrite can be used in a wide frequency region of 100 kHz to 10 MHz by limiting Fe2O3 content to a range of less than 50 mol %, that is the stoichiometric composition, inhibiting formation of Mn2O3 and adding a proper amount of CoO.

    摘要翻译： 本发明提供一种Mn-Zn铁氧体，其电阻率超过1欧姆等级，并且在100kHz时具有4000或更高的初始磁导率，在10MHz时具有100或更高的初始磁导率。 Mn-Zn铁氧体的主要成分包括44.0〜49.8mol％的Fe2O3，15.0〜26.5mol％的ZnO，0.1〜3.0mol％的CoO，0.02〜1.00mol％的Mn2O3，余下的是MnO。 通过将Fe 2 O 3含量限制在小于50mol％，即化学计量组成的范围内，Mn-Zn铁氧体可以在100kHz至10MHz的宽频率区域中使用，抑制Mn 2 O 3的形成并添加适量的CoO 。