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    • 1. 发明授权
    • Multilayer ceramic chip capacitor
    • 多层陶瓷片式电容器
    • US5319517A
    • 1994-06-07
    • US38695
    • 1993-03-29
    • Takeshi NomuraYukie NakanoAkira SatohAtsushi Hitomi
    • Takeshi NomuraYukie NakanoAkira SatohAtsushi Hitomi
    • H01G4/12H01G7/00
    • H01G4/1245Y10T29/417Y10T29/435
    • The invention provides a multilayer ceramic chip capacitor having internal electrodes and dielectric layers, wherein a dielectric material containing a dielectric oxide having a composition of the following formula:[(Ba.sub.1-x-y Ca.sub.x Sr.sub.y)O].sub.m (Ti.sub.1-z Zr.sub.z)O.sub.2wherein 0.ltoreq.x.ltoreq.0.25, 0.ltoreq.y.ltoreq.0.05, 0.1.ltoreq.z.ltoreq.0.3, and 1.000.ltoreq.m.ltoreq.1.020 and having added thereto an oxide of Mn and/or a compound which converts to the oxide upon firing in an amount of 0.01 to 0.5% by weight calculated as oxide (MnO), an oxide of Y and/or a compound which converts to the oxide upon firing in an amount of 0.05 to 0.5% by weight calculated as oxide (Y.sub.2 O.sub.3), an oxide of V and/or a compound which converts to the oxide upon firing in an amount of 0.005 to 0.3% by weight calculated as oxide (V.sub.2 O.sub.5), and an oxide of W and/or a compound which converts to the oxide upon firing in an amount of 0.005 to 0.3% by weight calculated as oxide (WO.sub.3), and an internal electrode-forming material in the form of Ni or a Ni alloy are successively layered and fired. The multilayer ceramic chip capacitor allows for low-temperature firing and has a long accelerated life of insulation resistance.
    • 本发明提供一种具有内部电极和电介质层的多层陶瓷片状电容器,其中包含具有下式的组成的电介质氧化物的介电材料:[(Ba1-x-yCaxSry)O] m(Ti1-zZrz)O2其中0 其中添加了Mn和/或其中的氧化物,其中, 以氧化物(MnO)计为0.01〜0.5重量%,Y的氧化物和/或以烧成后氧化物的化合物的0.05〜0.5质量%的化合物, 以氧化物(Y 2 O 3)计的氧化物,和/或以烧成后氧化物转化为氧化物的化合物,其氧化物(V 2 O 5)计为0.005〜0.3重量%,W和/或 以氧化物(WO3)计算的0.005〜0.3重量%的煅烧转化为氧化物的化合物和Ni或Ni合金形式的内部电极形成材料依次为l 点燃和开火。 该多层陶瓷片式电容器允许低温烧制并具有长的加速寿命的绝缘电阻。
    • 2. 发明授权
    • Multilayer ceramic chip capacitor
    • 多层陶瓷片式电容器
    • US5335139A
    • 1994-08-02
    • US90257
    • 1993-07-13
    • Takeshi NomuraYukie NakanoAkira SatohTomohiro Arashi
    • Takeshi NomuraYukie NakanoAkira SatohTomohiro Arashi
    • H01G4/12H01G7/00
    • H01G4/1227Y10T29/417Y10T29/435
    • A multilayer ceramic chip capacitor includes alternately stacked dielectric layers and internal electrode layers. The dielectric layers contain barium titanate as a major component and magnesium oxide, manganese oxide, barium oxide and/or calcium oxide, silicon oxide and optionally, yttrium oxide as minor components in such a proportion that there are present 0.1-3 mol of MgO, 0.05-1.0 mol of MnO, 2-12 mol of BaO+CaO, 2-12 mol of SiO.sub.2 and up to 1 mol of Y.sub.2 O.sub.3 per 100 mol of BaTiO.sub.3. The capacitor satisfies the standard temperature dependence of capacitance and shows a minimized change of capacitance with time under an applied DC electric field and a long insulation resistance life. Where the dielectric layers contain 0.1-3 mol of MgO, 1-5 mol of Y.sub.2 O.sub.3, 2-12 mol of BaO+CaO, and 2-12 mol of SiO.sub.2 per 100 mol of BaTiO.sub.3, the capacitor shows improved DC bias performance.
    • 多层陶瓷片状电容器包括交替堆叠的电介质层和内部电极层。 电介质层含有钛酸钡作为主要成分,氧化镁,氧化锰,氧化钡和/或氧化钙,氧化硅和任选的氧化钇为少量成分,其中存在0.1-3mol的MgO, 0.05〜1.0摩尔的MnO,2〜12摩尔的BaO + CaO,2〜12摩尔的SiO 2和1摩尔的Y 2 O 3/100摩尔的BaTiO 3。 电容器满足电容的标准温度依赖性,并且在施加的直流电场和长绝缘电阻寿命下显示电容随时间的最小化变化。 当电介质层含有0.1-3mol的MgO,1-5mol的Y2O3,2-12mol的BaO + CaO和2-12mol的SiO 2 / 100mol的BaTiO 3时,电容器显示出改善的DC偏置性能。
    • 3. 发明授权
    • Vibratory gyroscope
    • 振动陀螺仪
    • US5912524A
    • 1999-06-15
    • US997248
    • 1997-12-23
    • Kazumasa OhnishiAkira SatohYoshiro Tomikawa
    • Kazumasa OhnishiAkira SatohYoshiro Tomikawa
    • G01C19/5607H01L41/08
    • G01C19/5607
    • A vibratory gyroscope including an elongated vibrator having a central (neutral) axis (Y-axis), a drive unit for deforming the first direction such that the vibrator vibrates in a first (X) direction, an added mass attached to the vibrator at a position offset from the central axis in a second (Z) direction, and a detector formed on the vibrator. Rotation of the vibratory gyroscope about the second (Z) direction during vibration in the second direction causes Coriolis force to acting on the added mass in a direction parallel to the central axis. Because the added mass is offset from the central axis, a resulting vibration in the second (Z) direction is produced, which is detected by the detector. With this arrangement, the central axis of the vibrator is placed in parallel with the surface of rotation of the rotating system. Thus, rotations about two or three axes in each direction can be detected in such a manner that noise generation is prevented.
    • 一种振动陀螺仪,包括具有中心(中性)轴(Y轴)的细长振动器,用于使第一方向变形的驱动单元,使得振动器以第一(X)方向振动,附加到振动器的附加质量 位置偏离第二(Z)方向的中心轴线,以及形成在振动器上的检测器。 在第二方向的振动期间,振动陀螺仪围绕第二(Z)方向的旋转导致科里奥利力在平行于中心轴线的方向上作用于添加的质量。 由于添加的质量偏离中心轴,所以产生第二(Z)方向产生的振动,由检测器检测。 利用这种布置,振动器的中心轴线与旋转系统的旋转表面平行放置。 因此,可以以防止噪声产生的方式来检测每个方向上大约两个或三个轴的旋转。