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    Electronic chime alarm
    2.
    发明授权
    Electronic chime alarm 失效
    电子信号报警

    公开(公告)号：US3653040A

    公开(公告)日：1972-03-28

    申请号：US3653040D

    申请日：1970-01-30

    申请人： GEN ELECTRIC

    发明人： HOAG YATES M

    IPC分类号： G04C21/28 ,  G08B3/10 ,  G10K10/00

    CPC分类号： G04C21/28 ,  G08B3/10

    摘要： An electronic chime alarm includes a Hartley oscillator having a center-tapped coil which is electromagnetically coupled to a magnetic reed. The reed is supported at one end thereof by a yoke arrangement. By design, the oscillator may pulse the reed at a frequency lower than the reed''s resonant frequency. The resultant reed vibrations, which include harmonics dependent upon reed structure, of which a number of examples are shown, may be coupled to an amplifier and a speaker by either a nonmagnetic transducer or by a filter circuit connected across the coil. In addition, various examples of an oscillator unit structure including the reed, yoke, coil and transducer are illustrated. Finally, various switching arrangements which enable the chime alarm to be used with standard synchronous motor clocks or with clock-radios are described.

    摘要翻译： 电子钟声警报器包括具有电磁耦合到磁簧的中心抽头线圈的哈特利振荡器。 簧片的一端通过轭装置支撑。 通过设计，振荡器可以以低于簧片谐振频率的频率对簧片进行脉冲。 所得到的簧片振动，其包括依赖于簧片结构的谐波，其中示出了许多示例，其可以通过非磁性换能器或连接在线圈两端的滤波器电路耦合到放大器和扬声器。 此外，示出了包括簧片，磁轭，线圈和换能器的振荡器单元结构的各种示例。 最后，描述使得能够使用标准同步电机时钟或时钟收音机的钟声警报的各种切换装置。