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    Electret transducer and method of making an electret transducer
    2.
    发明公开
    Electret transducer and method of making an electret transducer 无效
    Elektretwandler und Verfahren zum Herstellen eines Elektretwandlers。

    公开(公告)号：EP0002363A1

    公开(公告)日：1979-06-13

    申请号：EP78300697.6

    申请日：1978-11-30

    申请人： THE POST OFFICE

    发明人： Morgan, Adrian John ,  Williams, John Kenneth ,  Else, Ronald

    IPC分类号： H04R19/01 ,  H01G7/02 ,  H04R31/00 ,  H04R7/18

    CPC分类号： H04R31/00 ,  H01G7/02 ,  H04R7/18 ,  H04R19/00 ,  H04R31/006 ,  Y10T29/49005

    摘要： In order to facilitate the manufacture of an electret transducer backplate and to improve the performance and reliability of the transducer, the backplate (6) is made of a thermo-softening plastics material rendered electrically conducting by electrically conducting particles distributed therethrough. An electret foil diaphragm (7) is mounted on the backplate (6) and the relative flexural rigidities of the diaphragm (7) and the backplate (6) are such that, in use, the deflection of the diaphragm is at least twenty times as great as the deflection of the backplate. A method of making the transducer involves heating an electret foil, bonding the electret foil to a retaining ring while the foil is hot and securing together the retaining ring and the backplate.

    摘要翻译： 为了便于制造驻极体传感器背板并提高换能器的性能和可靠性，背板（6）由热软化塑料材料制成，通过导电分布在其中的颗粒导电。 驻极体箔片隔膜（7）安装在背板（6）上，并且隔膜（7）和背板（6）的相对弯曲刚性使得在使用中，隔膜的偏转至少为二十倍 作为背板的偏转很大。 制造换能器的方法包括加热驻极体箔，当箔热时将驻极体箔粘合到保持环上，并将固定环和背板固定在一起。