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电磁打点计时器,是中学常用的一种简易、等时性计时器.我们以其结构为出发点,分析打点针的运动规律,从而说明它的性能和特点,并试图探讨它的调整条件和结构设计方法.一、概述电磁打点计时器,是借助交流电,通过简易机构而提供的一种等时性计时仪器.国外早有这类产品.在我国,79年由教育部制定标准后,有很多工厂从事生产.在高中物理教学中,作为学生必须掌握的计时工具而列入教材,为高中物理有关动力
Electromagnetic strike timer is a kind of simple and isochronous timer commonly used in middle school. We take the structure as a starting point, analyze the movement law of the needle, thus illustrating its performance and characteristics, and try to explore its adjustment conditions and structure. Design method. First, an overview of electromagnetic timers, is an isochronous timekeeping instrument provided by the use of alternating current, through a simple mechanism. Such products have long been abroad. In China, after the standards set by the Ministry of Education in 1979, there were many The factory is engaged in production. In high school physics teaching, it is included in textbooks as a timekeeping tool that students must master.