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    • 32. 发明授权
    • Electromagnetic relay
    • 电磁继电器
    • US5696475A
    • 1997-12-09
    • US600175
    • 1996-02-12
    • Katsumi YoshitaniHiromi NishimuraShigeru TajimaNorimasa KajiFumihiro KamitaniYukiharu TanakaTakao MorimotoShiro Maeda
    • Katsumi YoshitaniHiromi NishimuraShigeru TajimaNorimasa KajiFumihiro KamitaniYukiharu TanakaTakao MorimotoShiro Maeda
    • H01H50/02H01H50/04H01H50/64H01H51/22
    • H01H50/026H01H2050/028H01H50/042H01H50/648H01H51/2245
    • An electromagnetic relay has a base provided with an insulation enclosure and with a contact block outwardly of the enclosure. An electromagnet block is received within the enclosure and includes a coil, yokes, and an armature extending through the coil along the length of the enclosure. The armature is magnetically coupled to the coil and is movable relative to the yokes upon energization of the coil. A card is provided to connect the armature and a movable contact of the contact block for closing and opening the contact. A cover fitted on the base includes an insulation partition which extends between the enclosure and the contact block to accomplish a double-wall insulation between the electromagnet and the contact block. The card has a trunk for connection with the armature and a crosspiece for connection with the movable contact. The trunk extends into the enclosure through a front is opening thereof to fit around the end of the armature such that the entire length of the armature is insulated from the contact block by the enclosure and by the trunk. The crosspiece extends from the trunk longitudinal outwardly of the enclosure for connection with the movable contact outwardly of the insulation enclosure and partition. Further, the partition is contiguous along substantially the entire length of the enclosure. With these features, the relay can have an improved double-wall insulation between the electromagnet block and the contact block without leaving any insulation break along the length of the electromagnet block.
    • 电磁继电器具有设置有绝缘外壳并具有外壳外部的接触块的基座。 电磁铁块被容纳在外壳内,并且包括一个线圈,轭铁和沿着外壳长度延伸通过线圈的衔铁。 电枢磁耦合到线圈,并且在线圈通电时可以相对于轭移动。 提供卡以连接电枢和接触块的可动触点,用于闭合和打开触点。 安装在基座上的盖包括在外壳和接触块之间延伸的绝缘隔板,以在电磁体和接触块之间实现双壁绝缘。 卡具有用于与电枢连接的主干和用于与可动触点连接的横档。 主干通过前部开口而延伸到外壳中,以适配于电枢的端部,使得电枢的整个长度通过外壳和主体与接触块绝缘。 横档从外壳纵向向外延伸,用于与绝缘外壳和隔板外部的可动触头相连接。 此外,分隔件基本上围绕外壳的整个长度连续。 利用这些特征,继电器可以在电磁体块和接触块之间具有改进的双壁绝缘,而不会沿着电磁体块的长度留下任何绝缘断裂。
    • 34. 发明授权
    • Phase servo circuit
    • 相伺服电路
    • US4390908A
    • 1983-06-28
    • US206055
    • 1980-11-12
    • Tadahiko NakamuraKenji NakanoShigeru Tajima
    • Tadahiko NakamuraKenji NakanoShigeru Tajima
    • H04N5/7826G11B15/18G11B15/467G11B27/02G11B27/024H04N5/78
    • G11B27/024G11B15/1808G11B2220/90
    • A phase servo circuit for controlling a rotatable magnetic head which is used for recording and/or reproducing a television signal includes a pulse generator for producing a pulse signal synchronous with the rotating phase of the rotatable magnetic head, a phase difference detecting circuit for generating a control signal which is used for controlling the rotating phase of the rotatable magnetic head, the control signal having a pulse width modulated in response to the phase difference between the pulse signal and the vertical synchronizing signal of a television signal to be recorded, another circuit for detecting the phase difference between the aforementioned vertical synchronizing signal and a second vertical synchronizing signal of a reproduced television signal and a modulating circuit for modulating the pulse width of the control signal in response to the output of the phase difference detecting circuit, whereby the phase angle of the first-mentioned and second vertical synchronizing signals are in synchronization with each other on a magnetic tape in order to carry out tape editing operation.
    • 用于控制用于记录和/或再现电视信号的可旋转磁头的相位伺服电路包括:脉冲发生器,用于产生与可旋转磁头的旋转相位同步的脉冲信号;相位差检测电路,用于产生 用于控制可旋转磁头的旋转相位的控制信号,该控制信号具有响应于要记录的电视信号的脉冲信号和垂直同步信号之间的相位差调制的脉冲宽度, 检测上述垂直同步信号与再现电视信号的第二垂直同步信号之间的相位差,以及响应于相位差检测电路的输出调制控制信号的脉冲宽度的调制电路,由此相位角 的第一和第二垂直同步 为了进行磁带编辑操作,磁带信号在磁带上彼此同步。