Light source excited by high frequency for Zeeman effect atomic
absorption analysis
    1.
    发明授权
    Light source excited by high frequency for Zeeman effect atomic absorption analysis 失效
    光源激发高频泽西效应原子吸收分析

    公开(公告)号:US4253038A

    公开(公告)日:1981-02-24

    申请号:US919610

    申请日:1978-06-27

    CPC分类号: H01J1/025

    摘要: A light source is disclosed which can be used in atomic absorption analysis using the Zeeman effect. In operation, an external magnetic field is applied to the hollow cathode of the light source to cause the Zeeman-splitting of an emission line from the cathode material. The hollow cathode is made of a ferromagnetic metal as which is the element of interest for analysis and a metal for reducing the magnetic shield of the externally applied magnetic field by the ferromagnetic metal so that the external magnetic field effectively acts on the hollow portion of the cathode to provide the desired Zeeman-splitting. The hollow cathode is designed such that the product of the saturation flux densities of the cathode materials and the volume thereof is equal to or smaller than 0.2(Wb.multidot.m).times.10.sup.-6. The emission line from the cathode material is produced by excitation from a high frequency power supply, the power supply being connected to the cathode and the anode of the light source.

    摘要翻译: 公开了一种可用于使用塞曼效应进行原子吸收分析的光源。 在操作中,将外部磁场施加到光源的中空阴极,以使来自阴极材料的发射线的塞曼分裂。 中空阴极由用于分析的元素的铁磁金属制成,并且金属用于通过强磁性金属减少外部施加的磁场的磁屏蔽,使得外部磁场有效地作用在 阴极以提供所需的塞曼分裂。 空心阴极的设计使得阴极材料的饱和磁通密度及其体积的乘积等于或小于0.2(Wb×m)×10-6。 来自阴极材料的发射线通过从高频电源的激发产生,电源连接到光源的阴极和阳极。

    Vacuum circuit breaker
    2.
    发明授权
    Vacuum circuit breaker 失效
    真空断路器

    公开(公告)号:US4547639A

    公开(公告)日:1985-10-15

    申请号:US274679

    申请日:1981-06-17

    IPC分类号: H01H33/66 H01H1/02 B22F3/00

    CPC分类号: H01H1/0203 Y10T428/1216

    摘要: A vacuum circuit breaker comprising a vacuum vessel and a pair of electrodes disposed in the vessel, which is superior in chopping current characteristic, at least a contact of at least one of the electrodes being made of a member having a skeleton of an iron group element, pores in which skeleton are impregnated with at least one kind selected from a group consisting of silver; an alloy of Ag and at least one of Te, Se, Bi, Pb, Tl, In, Cd, Sn and Sb; and the intermetallic compound of Ag, the breaker having rated voltage of 3.6 to 36 KV and rated breaking currents of 8 to 60 KA.

    摘要翻译: 一种真空断路器,包括真空容器和设置在容器中的一对电极,其在斩波电流特性方面优于至少一个电极的至少一个触点由具有铁族元素骨架的构件 用选自银的至少一种浸渍骨架的孔; Ag和Te,Se,Bi,Pb,Tl,In,Cd,Sn和Sb中的至少一种的合金; 和Ag的金属间化合物,断路器的额定电压为3.6至36KV,额定分断电流为8至60KA。

    Semiconductor device
    3.
    发明授权
    Semiconductor device 失效
    半导体器件

    公开(公告)号:US4196442A

    公开(公告)日:1980-04-01

    申请号:US911078

    申请日:1978-05-31

    摘要: A semiconductor device comprises a semiconductor substrate and at least one supporting electrode soldered to one surface of the semiconductor substrate. The supporting electrode is constituted by a composite body having fibers embedded in a matrix of an electrically conductive metal. The coefficient of the thermal expansion of the fibers is substantially equal to or smaller than that of the semiconductor substrate. The fiber is arrayed in an annular, circular, spiral or the like pattern at least in the surface portion of the composite body on which the composite body is bonded to the substrate.

    摘要翻译: 半导体器件包括半导体衬底和焊接到半导体衬底的一个表面的至少一个支撑电极。 支撑电极由具有嵌入导电金属的基体中的纤维的复合体构成。 纤维的热膨胀系数基本上等于或小于半导体衬底的热膨胀系数。 纤维至少在复合体的表面部分中以环形,圆形,螺旋状或类似图案排列,复合体在该表面部分上结合到基底上。

    Surge-absorberless vacuum circuit interrupter
    4.
    发明授权
    Surge-absorberless vacuum circuit interrupter 失效
    浪涌吸收器真空断路器

    公开(公告)号:US4551596A

    公开(公告)日:1985-11-05

    申请号:US478306

    申请日:1983-03-24

    摘要: A small-sized, light weighted vacuum circuit interrupter is provided. The interrupter comprises a vacuum container confining a vacuum atmosphere of a pressure less than 10.sup.-5 mmHg and a pair of electrodes at least one of which is a movable electrode for making and breaking an electric circuit including either a transformer of a rated surge voltage strength of less than 45 kV or a motor of a rated surge voltage strength of less than 25 kV. At least one of the electrodes has a contact made of a porous body of a refractory conductive material and an impregnate selected from the group consisting of silver telluride, silver selenide and mixtures thereof impregnated in the porous body in an amount sufficient to give the interrupter a chopping current of not more than 1A and an arc extinguishing capability at 1MHz of not more than 27 A/.mu.s when measured in a circuit of 6 kV. The interrupter can be connected to the load without a surge absorber for protecting the breaker from a surge voltage generated at the time of interrupting the circuit.

    摘要翻译: 提供了一个小型轻型真空断路器。 断流器包括限制压力小于10-5mmHg的真空气氛的真空容器和一对电极,其中至少一个是可动电极,用于制造和断开包括额定浪涌电压强度的变压器的电路 小于45kV的电动机或额定浪涌电压强度小于25kV的电动机。 所述电极中的至少一个具有由耐火导电材料的多孔体制成的接触体和浸渍在多孔体中的浸渍剂,所述浸渍物选自碲化镉,硒化银及其混合物,其量足以给断流器a 在6 kV的电路中测量时,斩波电流不大于1A,1MHz时的灭弧能力不大于27 A /μs。 断路器可以连接到负载而没有浪涌吸收器,用于保护断路器免受中断电路时产生的浪涌电压。

    Vacuum-type circuit breaker
    5.
    发明授权
    Vacuum-type circuit breaker 失效
    真空式断路器

    公开(公告)号:US4229631A

    公开(公告)日:1980-10-21

    申请号:US922368

    申请日:1978-07-06

    IPC分类号: H01H33/66 H01H1/02 H01H1/025

    CPC分类号: H01H1/0203

    摘要: A vacuum-type circuit breaker comprising an evacuated container, and a pair of contacts disposed in the container and adapted to be moved between an open position and a closed position to permit a circuit breaking arc to be generated across the contacts, the contacts being made of a copper alloy containing manganese. The vacuum-type circuit breaker provided with the contacts of the aforementioned type has a higher dielectric strength than conventional vacuum-type circuit breakers.

    摘要翻译: 一种真空型断路器,包括抽真空的容器,以及设置在容器中的一对触点,其适于在打开位置和关闭位置之间移动,以允许在触头两端产生断路电弧,触点被制成 的含有锰的铜合金。 设置有上述类型的触点的真空型断路器具有比传统的真空型断路器更高的介电强度。