电阻分压器的集中参数电路模型及分析  

A Lumped-parameter Circuit Model of Resistive Divider and Its Analysis

作　　者：胡晓倩[1] 杨菁[1] 张莲[1] 

机构地区：[1]重庆工学院电子信息及自动化学院,重庆400050

出　　处：《重庆工学院学报（自然科学版）》2008年第7期96-98,116,共4页Journal of Chongqing Institute of Technology

基　　金：重庆市自然科学基金重点项目(CSTC2007BA2023);重庆市教育委员会科学技术研究项目(KJ070605)

摘　　要：针对纵向杂散电容和对地杂散电容对电阻分压器性能的影响,建立了一个包含电感、电容和电阻元件在内的分压器集中参数模型.从理论上推导出该模型的传递函数和阶跃函数在激励下的响应.结果发现,杂散电容和电感分别独立地影响阶跃响应时间,通过减小杂散电容和降低分压器阻值可以减小响应时间的电容项;而适当增大低压臂电感反而可以改善响应时间的电感项.Aiming at the influence of stray inductance and capacitance on the performance of resistive divider, a lumped-parameter circuit model of resistive divider including inductance, capacitance and resistor is established. Transfer function and step response time of resistive divider are deduced according to circuit theory . The results show that the step response time includes two parts, stray capacitance term and stray inductance term,, and the step response can be improved by decreasing the stray capacitance and resistance. In some occasions, the inductance of the response time can be improved by increasing the inductance of low voltage arm suitably.

关 键 词：电阻分压器 杂散电感 杂散电容 阶跃响应 

分 类 号：TM856[电气工程—高电压与绝缘技术]