大学物理 ›› 2011, Vol. 30 ›› Issue (3): 31-31.

• 著者文摘 • 上一篇    下一篇

RL与C并联谐振电路品质因数精确值的计算

汪小娜 单潮龙 王向军 肖昌汉   

  1. 海军工程大学电气与信息学院,湖北武汉430033
  • 出版日期:2011-03-25 发布日期:2011-03-20

Calculation of quality factor of RL and C parallel resonance circuit

  • Online:2011-03-25 Published:2011-03-20

摘要: 在谐振电路中,品质因数是一个重要的参数.一般教材对RLC串联谐振电路和RLC并联谐振电路的品质因数讨论较多,品质因数一般定义为电压或电流之间的比值.对实际应用中较为常见的电感线圈和电容并联谐振电路,即RL与C并联谐振电路的品质因数的讨论较少.本文根据谐振电路储能与耗能所定义的品质因数,计算了实际中常用的电感线圈和电容并联谐振电路的品质因数的精确值.

关键词: 品质因数, 谐振, 频率

Abstract: The quality factor is an important parameter for a resonant circuit.How to calculate the quality factor of a general RLC resonant circuit is discussed a lot in popular conferences and the quality factor is defined as the ration of voltages or currents.The RL and C parallel resonance circuit,which is the circuit model of practical resonant circuit,is discussed much fewer.The quality factor is calculated according to the definition,namely,the quality factor relates the maximum or peak energy stored to the energy dissipated in the circuit per cycle of oscillation.

Key words: quality factor, resonance, frequency

中图分类号: 

  • TM131.6