关于并联谐振电路特性的讨论

Discussion on Characteristics of a Parallel Resonance Circuit

针对一些大中专教材对于并联电路特性的表述:谐振时,电路的阻抗最大,电流最小。本文应用数学分析的方法,进行了全面、深入地分析、论证。得出结论是:对于电感、电阻串联后与电容并联的电路,调节电源电压的频率或电感元件的电感使之达到谐振时,其阻抗并非最大,电流并非最小。

Against the statement concerning the characteristics of a parallel resonance circuit in some collegiate and professional textbooks that the circuit impedance reaches its maximum and the current reaches it minimum in the condition of resonance, this paper makes in - depth and comprehensive analysis and demonstrations with methods of mathematic analysis. Then, it points out that when a circuit which is composed of capacitors paralleling inductance components and resistances in series is made to achieve resonance by adjusting the frequency of supply voltage or the inductance of inductance components, the circuit impedance is not the maximum and the current is not the minimum.