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    • 1. 发明公开
    • SIGNALTRENNER
    • EP3097387A1
    • 2016-11-30
    • EP15700882.2
    • 2015-01-22
    • Phoenix Contact GmbH & Co. KG
    • MEIER, Heinz-W.
    • G01D3/08G01D21/00H02M3/156
    • H02M3/156G01D3/08G01D21/00G05F1/56H02M3/335H02M2001/0045H02M2001/007
    • The invention relates to a signal isolator with reduced power loss. The signal isolating circuit contains an input stage (40; 140) and an output circuit (5; 100) which is arranged downstream thereof and which includes a linear regulator (10; 110). The linear regulator (10; 110) comprises an operational amplifier (20; 120) and a switching regulator (30; 130), wherein an input of the switching regulator (30; 130) is connected to an output of the operational amplifier (20; 120) and an output of the switching regulator (30; 130) is fed back to a first input of the operational amplifier (20; 120). The operational amplifier (20; 120) regulates the switching regulator (30; 130) such that the switching regulator (30; 130) provides at its output an output measurement signal for a load (50; 150) that corresponds to the input measurement signal.
    • 本发明涉及一种功耗减小的信号隔离器。 信号隔离电路包括输入级(40; 140)和输出电路(5; 100),输出电路布置在其下游并包括线性调节器(10; 110)。 线性稳压器(10; 110)包括运算放大器(20; 120)和开关稳压器(30; 130),其中开关稳压器(30; 130)的输入端连接到运算放大器 ; 120),并且开关调节器(30; 130)的输出被反馈到运算放大器(20; 120)的第一输入端。 运算放大器(20; 120)调节开关调节器(30; 130),使得开关调节器(30; 130)在其输出端提供对应于输入测量信号的负载(50; 150)的输出测量信号 。