| 发明名称 |
Pilot circuit for electrodynamic or piezoceramic receiving telephone capsules. |
| 摘要 |
A circuit for telephone equipment having electronic voice circuits is described which makes it possible to use piezoceramic receiving capsules (8) in place of electrodynamic ones without adding external interface circuits and/or modifying said voice circuit.
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| 申请公布号 |
EP0402969(A2) |
申请公布日期 |
1990.12.19 |
| 申请号 |
EP19900201329 |
申请日期 |
1990.05.25 |
| 申请人 |
SIEMENS TELECOMUNICAZIONI S.P.A. |
发明人 |
BURAGLIO, ALBERTO;COVINI, MARIO |
| 分类号 |
H04M1/03;H04M1/60;H04R17/00 |
主分类号 |
H04M1/03 |
| 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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