专利名称：CURRENT INTEGRATER 发明人：GAMOU RIYOUJI
表演的英语
申请号：JP12821578
申请日：19781018
公开号：JPS5555264A
天上星星公开日：
梦见排队打饭
19800423
执行总裁专利内容由知识产权出版社提供
摘要：PURPOSE:To accurately integrate minute input signals, by removing offt voltage by drawing DC voltage signals that are proportional to input currents, absolute values being equal and the polarity differs at the condary side of a power transformer. CONSTITUTION:A rectifying circuit 22 consisting of diodes D1-D4 and current- voltage converting elements Ri1, Ri2, Ci is mounted at the condary side of a current transformer 21 installed to a feeder, and DC voltage is signals ep, en that are proportioned to AC input currents, the absolute value is similar and the polarity differs and drawn between the output terminals. The signals, ep, en are alternately supplied to an integration circuit 24 by means of a switch 23, the output of a comparator 25 is inverted every time integration output reaches fixed voltage and the switch 23 is changed over in respon to inversion output. Thus, frequency fo formed by the inversion output of the comparator 25 proportional to the AC input currents.iphone有锁和无锁的区别
申请人：TOKYO SHIBAURA ELECTRIC CO
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