| 发明名称 |
TWO-WIRE LINE ALARM AND MONITOR CIRCUIT FOR A TELEPHONE LINE |
| 摘要 |
<p>An alarm and monitor circuit for indicating line driver load impedance changes by detection of the corresponding line driver currents above and below a predetermined normal level. The high current monitor circuit includes means to limit power delivery to the load when such high currents are detected.</p> |
| 申请公布号 |
CA1133603(A) |
申请公布日期 |
1982.10.12 |
| 申请号 |
CA19780311820 |
申请日期 |
1978.09.21 |
| 申请人 |
LEAR SEIGLER, INC. |
发明人 |
KEIPER, FRANCIS P., JR.;PORTER, GORDON C. |
| 分类号 |
H04M1/24;(IPC1-7):04M1/24 |
主分类号 |
H04M1/24 |
| 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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