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示波器由于其结构复杂和理论难理解(尤其对扫描电压和扫描电压的频率的作用的理解),使相当部分的学生望而生畏.在教学中若能突破以下几个重点难点问题,学生必定能很快地掌握这部分知识.一、示波器的主要结构与原理(竖直和水平偏转电压作用的理解是重点,对扫描电压作用的理解是难点)示波器的核心部件是示波管,掌握了示波管的结构和原理就能正确地理解与使用示波器.示波管(管内抽成真空)主要由电子枪(由金属丝、
Because of its complex structure and difficult to understand theoretically (especially for the understanding of the effects of scanning voltage and scanning voltage frequency), oscilloscopes make a considerable number of students daunting. If students can overcome the following key difficulties in teaching, students must be able to quickly To master this part of the knowledge. First, the main structure and principle of the oscilloscope (understanding the role of vertical and horizontal deflection voltage is the key, the understanding of the role of the scanning voltage is difficult) Oscilloscope’s core component is the oscilloscope, mastered the oscilloscope The structure and principle will be able to correctly understand and use the oscilloscope. The oscilloscope tube (evacuated in the tube) is mainly composed of an electron gun (