一、前言在设计新的自动程控交流校准器时需对其内部的交直流转换器作专门的研究。对于热电器件的设计,要求在满足准确度、溯源性和带宽的情况下,同时要具有优秀的到达稳态所需时间、噪声和线性响应等性能。二、平方律检波器基于对数原理的电子式有效值检波器近十年来已用于测试仪器并作为子系统的组件,但 I. Introduction In the design of new automatic program-controlled exchange calibrator need to be dedicated to its internal DC-DC converter. For the design of thermoelectric devices, it is required to meet the requirements of accuracy, traceability and bandwidth while achieving excellent performance such as time required to reach steady state, noise and linearity response. Second, the square law detector Based on the principle of logarithmic electronic rms detector has been used in the past 10 years as a test equipment and subsystems components, but