用电阻定义式求特殊电容器直流电阻

教学讨论

用电阻定义式求特殊电容器直流电阻

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黄绍书( 1967—) ，男，贵州六盘水人，六盘水师范学院教授，六盘水第八中学正高级教师，主要从事中学物理教育教学暨大、中学物理衔接问题研究工作.

收稿日期: 2020-09-28

修回日期: 2020-11-25

网络出版日期: 2021-05-17

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Finding the DC resistance of special capacitors with resistance definition

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1. Liupanshui Teachers College，Liupanshui，Guizhou 553000，China; 2. Liupanshui City No. 8 Middle School，Liupanshui，Guizhou 553004，China

Received date: 2020-09-28

Revised date: 2020-11-25

Online published: 2021-05-17

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在电子线路工程及其教学过程中，都需要对电容器的直流电阻进行计算.然而，对一些特殊形状的电容器的直流电阻计算，普遍采用的电流密度法是比较麻烦的.本文根据电阻定义式，结合电阻的串联和并联的简洁关系，简单明了地对球冠形电容器、柱冠形电容器和正多棱柱形电容器等的直流电阻进行了计算，并给出相应的定量表达式.

关键词： 特殊电容器直流电阻; 球冠形电容器; 柱冠形电容器; 正多棱柱形电容器

黄绍书, 冯俊杰 . 用电阻定义式求特殊电容器直流电阻[J]. 大学物理, 2021 , 40(5) : 5 . DOI: 10.16854 / j.cnki.1000-0712.200429

In the electronic circuit engineering and teaching process，it is necessary to calculate

the DC resist- ance of the capacitor. However，for calculating the DC resistance of some

special-shaped capacitors，the current density method generally used is more troublesome. In this

paper，according to the definition of resistance，combi- ning with the concise relationship between

the series and parallel resistance，the DC resistances of spherical crown capacitor，cylindrical

crown capacitor and positive polygonal capacitor and so on are calculated clearly and the cor-

responding quantitative expression is given.

Key words： DC resistance of special capacitors; spherical cap capacitors; cylindrical cap capacitors; positive polygonal capacitors

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