衡重网络是杂音计中具有特殊频率特性的加权网络,它一般是用铁氧体绕制的电感与RC元件综合而成,因而显得笨重,工艺麻烦。本文介绍了一个用机助最优化方法设计的、用集成运算放大器和RC元件实现的有源衡重网络。它满足1972年CCITT建议的标准,并具有轻便、工艺简单的特点。文中介绍了设计方法、主要程序以及实验结果。 Weighing network is a weighted frequency network with a special frequency characteristics of the noise meter, which is generally made of ferrite wound inductors and integrated into the RC components, which appears bulky, the process cumbersome. This article presents an active weighted network designed with the help-and-optimization approach and integrated op amp and RC components. It meets the criteria recommended by the CCITT in 1972 and is lightweight and simple in technology. The paper introduces the design method, the main program and the experimental results.