| 发明名称 |
UN CIRCUITO PARA ALIMENTAR UNA LINEA TELEFONICA QUE INCLUYE UN DISPOSITIVO DE PROTECCION. |
| 摘要 |
<p>A telephone line feed circuit is disclosed including a protective device which is located on the line ahead of the feeding device. The protective device reduces the voltage variations at the terminals of the feeding voltage in the event of overvoltage on the line. This advantageously protects the cross points of the switch against overvoltage.</p> |
| 申请公布号 |
ES467492(A1) |
申请公布日期 |
1978.10.16 |
| 申请号 |
ES19920004674 |
申请日期 |
1978.03.02 |
| 申请人 |
STANDARD ELECTRICA, S. A. |
发明人 |
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| 分类号 |
H04M3/18;H04M19/00;(IPC1-7):04M/ |
主分类号 |
H04M3/18 |
| 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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