发明名称 TWOOWIREEFOURRWIRE CONVERSION CIRCUIT
摘要 PURPOSE:To always expand the isolation between four-wire input and output, by means of superposing four-wire side output signal by branching and taking out on the current being needed so as to correct the deviated part due to the two-wire side signal thereby controlling and balancing the four-wire side input load with the gap output.
申请公布号 JPS5225541(A) 申请公布日期 1977.02.25
申请号 JP19750101234 申请日期 1975.08.22
申请人 HITACHI LTD 发明人 HONDA AKIRA;KITA YASUHIRO
分类号 H04B3/03;H03H11/36;H04B1/58 主分类号 H04B3/03
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