关于施密特触发器的教学方法研究

对电子技术基础理论中极为重要的单元电路施密特触发器的几种类型进行了归纳、比较,指出了常用的2类不同芯片实现的施密特触发器之间的相同、相似之处以及它们的主要区别,并且首次提出了判断反相施密特触发器与同相施密特触发器简易可行的法则.对于由运算放大器实现的反相与同相施密特触发器的阈值电压计算公式给出了标准式.同时建议教师在讲授这部分内容时,在作必要的分析、讲解的同时,也应采用一些归纳、比较和小结的教学手段,以取得更为理想的教学效果.

Study of teaching method about Schmitt trigger

Sums up and compares various Schmitt triggers, a kind of unit circuit extremely important in theories of basic electronic teclmology, points out the similarities and main differences between tlle ones in common use wida two kinds of chips, advances for the first time a simple and pratieable rule to distinguish the phased and phasing-back ones, introduces a standard calculating formula of threshold voltage of file phased and phasing-back Sehmitt trigger realized by operational amplifiers, and suggests as well that when giving the lessons about this part, the teachers in this field adopt the teaching method of inducing, comparing and then summarizing briefly at the same time while necessarily analizing and explaining to achieve more ideal teaching results.