发明名称 |
Integrated microphone/amplifier unit, and amplifier module therefor |
摘要 |
<p>The invention relates to an integrated microphone/amplifier unit, in particular for a hearing aid, which is largely insensitive to interference signals such as, for instance, could be caused by GSM telephone apparatuses because capacitive couplings are arranged between the amplifier output and ground, and between the feed and ground. These capacitive couplings are made by the thick-film technique and can be provided with a separate ground connection. In one embodiment the capacitive couplings comprise capacitors, of which the output and feed connections themselves form part. In another embodiment the capacitive couplings comprise capacitors that are formed on the back of a carrier. <IMAGE></p> |
申请公布号 |
EP0800331(A2) |
申请公布日期 |
1997.10.08 |
申请号 |
EP19970200968 |
申请日期 |
1997.04.02 |
申请人 |
MICROTRONIC NEDERLAND B.V. |
发明人 |
HALTEREN, AART ZEGER;WILMINK, ENGBERT |
分类号 |
H04R1/04;H04R19/04;H04R25/00;(IPC1-7):H04R19/01;H03F3/185 |
主分类号 |
H04R1/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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