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106 条记录 (耗时 0.011 秒)

    Contactless switch
    71.
    发明授权
    Contactless switch 失效
    无接触开关

    公开(公告)号：US3867652A

    公开(公告)日：1975-02-18

    申请号：US40685673

    申请日：1973-10-16

    申请人： ERICSSON TELEFON AB L M

    发明人： BJORKLUND FRITZ LARS GUNNAR ,  STERNBECK OLAF

    IPC分类号： H03K17/90 ,  H03F15/00 ,  H01V5/00

    CPC分类号： H03K17/90 ,  Y10T307/766

    摘要： The invention refers to a contactless switch, comprising a Halleffect element that has a pair of input electrodes for applying an operating voltage to generate a current in an internal current path and at least one output electrode located adjacent the current path to derive a Hall-potential when an external magnetic field influences the current laterally, and an amplifier circuit that is controlled by the Hall-potential. According to the invention, the Hall-effect element is provided with at least one control electrode for controlling the magnitude of such current, and the amplifier circuit is provided with at least one output terminal connected to the control electrode of the Hall-effect element for feeding back an amplified Hall-potential in such a phase that the amplifier circuit is provided with positive feedback.

    摘要翻译： 本发明涉及一种非接触式开关，包括霍尔效应元件，该霍尔效应元件具有一对输入电极，用于施加工作电压以产生内部电流通路中的电流，并且至少一个输出电极位于电流路径附近以导出霍尔 当外部磁场横向影响电流时的电位，以及由霍尔电位控制的放大器电路。 根据本发明，霍尔效应元件设置有用于控制这种电流的大小的至少一个控制电极，并且放大器电路设置有连接到霍尔效应元件的控制电极的至少一个输出端子， 在放大器电路提供正反馈的相位中反馈放大的霍尔电位。

    Josephson junction amplifier
    72.
    发明授权
    Josephson junction amplifier 失效
    JOSEPHSON功能放大器

    公开(公告)号：US3783402A

    公开(公告)日：1974-01-01

    申请号：US3783402D

    申请日：1972-06-28

    申请人： US NAVY

    发明人： VAN DER ZIEL A ,  CHOE H

    IPC分类号： H03F19/00 ,  H03F15/00

    CPC分类号： H03F19/00 ,  Y10S505/855

    摘要： The invention disclosed herein utilizes the Josephson tunneling effect to provide an amplifier having unique characteristics. The Josephson tunneling effect relates to a supercurrent flow thru a thin barrier between two superconductors by quantum mechanical tunneling of electron pairs; in other words, current can flow with no voltage applied between the superconductors. The dc quantum interference effect can produce thru the use of an external magnetic field a large change in barrier current by tunneling and is used herein to produce an amplifier.

    摘要翻译： 本文公开的本发明利用约瑟夫逊隧道效应来提供具有独特特性的放大器。