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    Offswitching of liquid metal arc switching device by internal current diversion to an auxiliary electrode
    1.
    发明授权
    Offswitching of liquid metal arc switching device by internal current diversion to an auxiliary electrode 失效
    液态金属切换装置通过内部电流分流到辅助电极

    公开(公告)号：US3699384A

    公开(公告)日：1972-10-17

    申请号：US3699384D

    申请日：1971-09-07

    Applicant: HUGHES AIRCRAFT CO

    Inventor： ECKHARDT WILFRIED O

    IPC: H01J13/00 ,  H01H9/54 ,  H01H36/00 ,  H01J13/04 ,  H01J7/24 ,  H01J13/06

    CPC classification number: H01J13/04 ,  H01H2009/523 ,  H01J2893/0089

    Abstract: An enclosed vessel containing one or more anodes, a main cathode, one or more auxiliary cathodes, and means for maintaining a low pressure in the tube comprises a liquid-metal arc switching device. The main cathode is fed with a metal which is liquid at convenient temperatures, so that limited quantities of the metal are present and available on the cathode for arcing. The interior of the vessel is maintained at a low background pressure so that, during nonconduction, vacuum space insulation is provided between the anodes and the cathodes. Arc initiation is accomplished by any convenient initiator, and the arc runs upon the small amount of liquid metal fed at an appropriate rate to the main cathode. For arc extinction, at least one auxiliary cathode is positioned within the envelope.

    Abstract translation: 包含一个或多个阳极，主阴极，一个或多个辅助阴极和用于在管中保持低压的装置的封闭容器包括液体 - 金属电弧切换装置。 主阴极在方便的温度下供给液体的金属，因此在阴极上存在有限量的金属并可用于电弧。 容器的内部保持在低的背景压力，使得在非导电期间，在阳极和阴极之间提供真空空间绝缘。 通过任何方便的引发剂实现电弧引发，并且电弧在以适当速率供给至主阴极的少量液态金属上运行。 对于消弧，至少一个辅助阴极位于封套内。

    Orientation independent ignitron
    6.
    发明授权
    Orientation independent ignitron 失效
    定向独立点火器

    公开(公告)号：US4264839A

    公开(公告)日：1981-04-28

    申请号：US47672

    申请日：1979-06-12

    Applicant: John R. Bayless

    Inventor： John R. Bayless

    IPC: H01J13/06 ,  H01J7/24 ,  H01J13/32

    CPC classification number: H01J13/06

    Abstract: Orientation independent ignitron 10 has a cooled cathode 28 which carries thin mercury film 58 which is held in place by surface tension forces so that it is independent of orientation. Ignitor 48 starts conduction which continues until mercury exhaustion or shut off by an external circuit. During nonconductive portions of the duty cycle, the mercury recondenses on the cooled cathode 30.

    Abstract translation: 取向独立的点火器10具有冷却的阴极28，其承载薄的水银膜58，该薄膜通过表面张力保持在适当的位置，使得其不依赖于取向。 点火器48开始传导，持续到汞耗​​尽或外部电路切断。 在占空比的非导电部分期间，冷却的阴极30上的汞再生浓度。

    Liquid metal cathode with single capillary flow impedance
    7.
    发明授权
    Liquid metal cathode with single capillary flow impedance 失效
    液体金属阴极与单毛细管流动阻力

    公开(公告)号：US3579011A

    公开(公告)日：1971-05-18

    申请号：US3579011D

    申请日：1969-01-08

    Applicant: HUGHES AIRCRAFT CO

    Inventor： HYMAN JULIUS JR

    IPC: H01J13/06 ,  H01J13/08 ,  H01J13/14 ,  H01J1/06 ,  H01J1/10 ,  H01J13/10

    CPC classification number: H01J13/08 ,  H01J13/06 ,  H01J13/14 ,  H01J2893/0083

    Abstract: The liquid metal cathode is employed as a cathodic electron source in arc discharges. A small liquid metal pool serves as the arcing material, and when it is kept small, improved electron-toatom emission ratios are obtained, as well as gravity independence. However, when such a small pool is employed, feed to the pool must be free of feed rate perturbations. Otherwise, an instability in the level of the mercury in the pool results. The present invention obtains feed rate stability by providing a feed passage with a diameter which is everywhere larger than that of the feed channel which finally discharges to the pool. Feed flow impedance is provided by an elongated capillary feed channel.

    Method of making semi-conductive material for use in semi-conductive devices
    8.
    发明授权
    Method of making semi-conductive material for use in semi-conductive devices 失效
    制造用于半导体器件的半导体材料的方法

    公开(公告)号：US3047380A

    公开(公告)日：1962-07-31

    申请号：US386560

    申请日：1960-01-21

    Applicant: PHILIPS CORP

    Inventor： JAN BLOEM

    IPC: C30B13/00 ,  H01J13/06 ,  H01L21/00

    CPC classification number: H01J13/06 ,  C30B13/00 ,  C30B29/08 ,  H01J2893/0075 ,  H01L21/00

    Abstract: Germanium is freed from oxygen by adding magnesium, beryllium or titanium and zone refining. Zone refining may be repeated one or more times. 0,1-5 atomic per cent of magnesium based on the molten zone may be employed. As shown a pellet 3 consisting of a 2 to 3 mixture of magnesium and germanium is placed on one end of a bar 2 of germanium in a graphite crucible 1. The crucible is then placed in a quartz tube 4, which is then traversed by an induction heating coil 5 during the passage through the tube of a stream of pure dry hydrogen. After the passage of two molten zones, the end of high magnesium content is cut off and the remainder is treated with an aqueous solution of hydrogen fluoride and nitric acid. A desired amount of a significant impurity may be incorporated in the germanium or a single crystal may be formed during the passage of the second molten zone.

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