发明名称 |
SUBSCRIBER'S TELEPHONE CIRCUIT |
摘要 |
<p>SUBSCRIBER'S TELEPHONE CIRCUIT A transformerless subscriber's telephone circuit including an integrated circuit pulse dialer and transmit, receive and ringer circuitry employing discrete components. To prevent pulse distortion a minimum value of operated voltage is always supplied to the pulse dialer by means of the inclusion of a large capacitor which functions to maintain line voltage available to the dialer above a predetermined minimum value.</p> |
申请公布号 |
CA1209291(A) |
申请公布日期 |
1986.08.05 |
申请号 |
CA19840453299 |
申请日期 |
1984.05.01 |
申请人 |
GTE BUSINESS COMMUNICATIONS SYSTEMS INCORPORATED |
发明人 |
GRANTLAND, GARY |
分类号 |
H04M1/26;H04M1/31;H04M19/00;(IPC1-7):H04M1/26 |
主分类号 |
H04M1/26 |
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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