发明名称 |
Circuit arrangement for a microphone amplifier of a telephone subscriber station |
摘要 |
The invention relates to a circuit arrangement for a microphone amplifier for a telephone subscriber station. The microphone amplifier is provided with a high degree of common-mode rejection in order to suppress hum interference which infiltrates via the microphone connection lead.
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申请公布号 |
DE3408145(A1) |
申请公布日期 |
1985.09.12 |
申请号 |
DE19843408145 |
申请日期 |
1984.03.06 |
申请人 |
HAGENUK GMBH |
发明人 |
SCHOENKE,HERBERT |
分类号 |
H04M1/60;(IPC1-7):H04M1/60 |
主分类号 |
H04M1/60 |
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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