Research on Low-cost Digital Teaching in Electrotechnical Experiments

Today, with the development of digital teaching, virtual simulation has the advantages of high security, controllability and repeatability, strong sense of experience, and remote operation, and it has a wide range of application space. However, due to the large investment cost in the early stage of its construction, it is currently mainly used to assist experimental teaching, and there are still many experimental courses that cannot achieve high-level digital construction through virtual simulation. This paper studies the digital construction of electrical engineering experimental courses under low-cost conditions, and makes use of the advantages of MOOCs to build a good and rich theoretical foundation platform to provide students with sufficient preview materials and extended knowledge combined with practice. Use Flash to make simple virtual simulation experiment GIFs, show the basic operation process of the experiment facing each other the students in advance, which can be used for students' pre-class preview and after-class review; Make high-quality experiment operation videos for students to learn the details of experiments. In the process of research, we pay attention to combining experiments, students, teachers, costs and other factors to explore the digital construction path that suits us.