Application of virtual instrument techonoly in electric courses teaching

This paper analyzed the problems existed in practice teaching process of electric courses and put forward a new view which is to apply virtual instrument (VI) technology in theses courses. On the basis of a simple instruction for labVIEW´s VI design function, an instance which designed by labVIEW to emulate and detect harmonic signals was described in detail. The instance has been used in the course of power quality and obtained a good result. More and more instances were designed based VI and used in electric courses, it can promote the combination between theory and practice and improve teaching level of these courses.