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发明名称
有保护的内置音箱式门铃
摘要
一种电铃,在它的工作线圈供电电路中串入热敏电阻作限流保护,同时将金属发音件置入由音障板围成的音箱中加强发音效果。
申请公布号
CN2046665U
申请公布日期
1989.10.25
申请号
CN89203366.5
申请日期
1989.03.21
申请人
高鸿飞
发明人
高鸿飞
分类号
G10K1/062
主分类号
G10K1/062
代理机构
代理人
主权项
一种由工作线圈,铁芯,弹簧,金属发音件,音障板构成的电铃,电铃的壳体内有一正温度系数热敏电阻,其特征是: a、所述工作线圈(4)与热敏电阻(5)串联接入电路。 b、所述金属发音件(1)被音障板(3)包围。
地址
广东省深圳市上埗华富路黄木岗东区16栋312号
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