相量法是分析正弦交流电路问题的重要方法之一.它的特点是数学模型简单、直观,可操作性强.本文以交流电桥实验中的电感桥和电容桥为例,展示了相量法在交流电桥平衡的分析与求解过程中的优点.该方法用于交流电桥实验不仅有助于学生巩固相量的概念,而且能深刻地理解交流电桥的测量原理.
The phasor method is one of the important ways to analyse sinusoidal AC circuit.The features of the method are simple,intuitive,and easy operable.With inductance-bridge and capacitance-bridge,the advantage of the phasor method in AC bridge balance analysis is described.The phasor method is used to AC bridge experiment,which will not only help students to consolidate the concept of phase volume,but also a deep understanding of the measurement principle of AC bridge.