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本文介绍了Cordell有源可变幅度均衡器(以下简称新型均衡器)的电路结构;并对其特性及设计方法进行了研究。本文首先通过研究波特(Bode)型可变均衡器的基本均衡方程式,经过多次变换,推演了这种新型均衡器的传递函数及电路结构,并研究了它的特性及提出了综合法的设计方法。最后给出了这种新型均衡器用作斜调网络的设计实例。这种新型均衡器克服了无源及其它有源可变幅度均衡器的缺点,因而电路简单,设计方便,并易于用运算放大器及RC网络实现。
This paper introduces the circuit structure of Cordell active variable amplitude equalizer (hereinafter referred to as the new equalizer); and its characteristics and design methods are studied. Firstly, by studying the basic equalization equation of Bode type variable equalizer, after many transformations, the transfer function and circuit structure of this new type of equalizer are deduced and its characteristics are studied. Design method Finally, this new type of equalizer is used as a design example of a mute network. This new equalizer overcomes the shortcomings of passive and other active variable amplitude equalizers, making the circuit simple, easy to design, and easy to implement with an op amp and an RC network.