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.
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
关键词
分压器
衰减器
线性电路
自动测试设备
voltage divider
attenuator
linear circuit
automatic test equipment