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1. 发明申请

WO1996030998A1 AMPLIFYING CIRCUIT 审中-公开
标题翻译：放大电路
公开(公告)号：WO1996030998A1
公开(公告)日：1996-10-03
申请号：PCT/AU1996000172
申请日：1996-03-27
申请人： JAMES, Anthony, Michael , HILDEBRANDT, William, James
IPC分类号： H03F01/34
CPC分类号： H03F3/347 , H03F1/083 , H03F2200/261
摘要： An amplifier is provided for audio or instrumentation applications which exhibits radically improved performance over existing amplifiers of comparable cost. In a preferred embodiment, the amplifier comprises two operational amplifiers (A1, A2) connected in cascade, where feedback elements (Cf2, Rf2) are connected across the second op amp (A2) to cause an intermediate voltage signal (Z) to be substantially advanced in phase. In this embodiment, a capacitor (Cf1) is also connected across the first op amp (A1), and an outer DC loop is provided with damping means (Cf3) to reduce the closed loop gain at high frequencies, stabilising the combination. The composite amplifier has performance far exceeding a conventional stand-alone op amp and is very cheap to construct.
摘要翻译：为音频或仪器应用提供放大器，可以显着提高性能，超过现有放大器的可比性。在优选实施例中，放大器包括串联连接的两个运算放大器（A1，A2），其中反馈元件（Cf2，Rf2）跨越第二运算放大器（A2）连接，以使中间电压信号（Z）基本上进阶阶段在本实施例中，电容器（Cf1）也连接在第一运算放大器（A1）两端，并且外部DC环路设置有阻尼装置（Cf3），以降低高频下的闭环增益，从而稳定组合。复合放大器的性能远远超过传统的独立运算放大器，并且构造非常便宜。

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