发明名称 |
SPAENDINGSSTYRET TRANSIENTBESKYTTELSE |
摘要 |
PCT No. PCT/SE81/00392 Sec. 371 Date Aug. 10, 1982 Sec. 102(e) Date Aug. 10, 1982 PCT Filed Dec. 23, 1981 PCT Pub. No. WO82/02287 PCT Pub. Date Jul. 8, 1982.An arrangement for protection of circuits in a telephone exchange against overvoltages like for example lightning transients or so called longitudinal disturbances appearing on the lines connected to the exchange. The arrangement having at least two non-linear electronic circuit elements (T2, T3) which selectively shunt the overvoltages to ground, the junction between the conduction states, conducting-non-conducting, for at least one of the circuit elements being controllable. |
申请公布号 |
DK163549(C) |
申请公布日期 |
1992.08.31 |
申请号 |
DK19820003749 |
申请日期 |
1982.08.20 |
申请人 |
L M ERICSSON, TELEFONAKTIEBOLAGET |
发明人 |
HAMMARBERG, LARS ERIK;HJORTENDAL, ROYNE GUNNAR;GHISLER, WALTER |
分类号 |
H02H;H02H7/20;H02H9/04;H04M3/02;H04Q3/42 |
主分类号 |
H02H |
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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