发明名称 TRANSMISSION PROTECTION RELAY SYSTEM
摘要 PURPOSE:To prevent malfunction by detecting clutter in the communication line through detection of the fact that voltage change within a period t does not exceed a predetermined value, and this is achieved by prescribing the maximum point of the crest value and slope on the transmission side and effecting S/H of the received and demodulated signal at a constant interval on the reception side.
申请公布号 JPS52140840(A) 申请公布日期 1977.11.24
申请号 JP19760056569 申请日期 1976.05.19
申请人 HITACHI LTD 发明人 SAKOU EIZABUROU
分类号 H02H3/28;H02H3/30 主分类号 H02H3/28
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