多挡分压器的分析与设计  

Analysis and Design of Multi-Range Voltage-Divider

作　　者：李正生[1] 马文彦[1] 

机构地区：[1]西安市第二炮兵工程学院一系,陕西西安710025

出　　处：《电气电子教学学报》2008年第5期42-44,共3页Journal of Electrical and Electronic Education

摘　　要：通过理论分析和公式推导,本文研究了基本固定电阻分压器、电容补偿分压器和并接式、串接式、链接式多挡分压器的特点。通过研究L型和定阻型等比电阻分压器的设计问题,给出了设计常用等比分压器的两个关键参数表。表格提供了L型分压器需要计算的3种计算公式及电阻和定阻型分压器需要计算的4种电阻的计算公式,为等比分压网络中电阻值的计算提供了方便。误差分析表明,对于n级链接式分压器,其总的设计误差约为各级误差之和。Through theoretical analyzing and formula deriving, this paper researches the characteristic about 2 kinds of fixed resistor voltage-dividers including primitive type and capacitor-compensatory type and 3 kinds of multi-range voltage-dividers in parallel connection, serial connection and inter-linkage connection. After studying the design of the L-shape and fixed-impedance type geometric proportion voltage-divider, two key parameter tables about often-used geometric voltage-divider are given. In the tables, the formulas for 3 kinds of resistors in the L-shape divider and 4 kinds of resistors in fixed-impedance type divider are provided , the value of the resistors in the geometric voltage - divide net can be calculated easily . The error analysis shows that for the N-step of inter-linkage divider, its total error approximates the sum of each subnet＇s error.

关 键 词：分压器 衰减器 线性电路 自动测试设备 

分 类 号：TM131[电气工程—电工理论与新技术]