Original document(10 pages)  中文版
    An electret-capacity microphone of waterproof and antimoisture type is prepared as setting voice hole at sealed end of metal shell; fixing waterproof screen at external side of said voice hole for avoiding dust or moisture to enter internal of microphone; superposing support ring of water blocking screen, water blocking screen, vibration diaphragm, insulation pad, back polar plate, polar ring and printed circuit board in sequence in metal shell.
Application Number
申请号		 200610069116 Application Date
申请日		 2006.09.30
Title 名称 Waterpoof and dampproof electret capacitance microphone
Publication Number
公开号		 1933679 Publication Date
公开日		 2007.03.21
Approval Pub. Date Granted Pub. Date
International Classification 分类号 H04R19/01;H04R19/04
Applicant(s) Name
申请人		 Gongda Telecommunication Co., Ltd.
Address 地址
Inventor(s) Name 发明人
Attorney & Agent 代理人 gongke li
More information 更  多  信  息


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