发明名称 STARTING CIRCUIT OF DEVICE IN THE OTHER PARTY STATION
摘要 PURPOSE:To make an expensive positive power source in the incoming repeater side unnecessary by supplying an earth and a negative voltage to channels, on which the negative voltage and the earth appear respectively, in the incoming repeater side by an outgoing repeater to start this incoming repeater. CONSTITUTION:In an outgoing repeater 4, a negative power source 13 (for example, -48V) and the earth are connected to lines (a) and (b) of a two-wire channel 2 through starting elements 11 and 12 of the device of the other party station respectively; and in an incoming repeater 5, the earth appears on the line (a) through one winding of a relay 30, and a negative voltage, for example, -48V from a negative power source 32 appears on the line (b) through the other winding of the relay 30. If said starting elements 11 and 12 are turned on simultaneously in the outgoing repeater 4, an additive current is flowed to windings of the relay 30 through the circuit passing the earth-one winding of the relay 30 the line (a)-said element 11-the negative power source 13-the earth in the side of the line (a), and is flowed there through the circuit passing the earth, said element 12-the line (b)-the other winding of the relay 30-the negative power source 32, the earth in the die of the line (b); and thus, the relay 30 is operated to start the incoming repeater 5.
申请公布号 JPS60247395(A) 申请公布日期 1985.12.07
申请号 JP19840103849 申请日期 1984.05.23
申请人 NIPPON DENKI KK 发明人 HAYASAKA KAZUO
分类号 H04Q3/42;H04M7/00;H04M19/08 主分类号 H04Q3/42
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