发明名称 |
Telecommunication line circuit and associated polarity reversal circuit. |
摘要 |
<p>Telecommunication line circuit with line amplifiers having a bias voltage equal to the sum of a fixed voltage and a variable voltage which is function of the envelope of a metering signal. A polarity reversal circuit is able to change the output voltage of each of these line amplifiers between two predetermined voltages in a gradual way and independently from the line circuit.</p> |
申请公布号 |
EP0145047(A2) |
申请公布日期 |
1985.06.19 |
申请号 |
EP19840201522 |
申请日期 |
1984.10.20 |
申请人 |
BELL TELEPHONE MANUFACTURING COMPANY NAAMLOZE VENNOOTSCHAP;ALCATEL N.V. |
发明人 |
BIENSTMAN, LUC ARMAND;DOBOSCH, WLODIMIR JOZEF |
分类号 |
H04Q1/38;H04M3/00;H04M15/28;H04M19/00;(IPC1-7):H04M19/00;H04M15/10 |
主分类号 |
H04Q1/38 |
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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