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.
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.
出处
《大学物理》
北大核心
2011年第3期31-33,40,共4页
College Physics
关键词
品质因数
谐振
频率
quality factor
resonance
frequency
