摘要
利用永磁体对干簧管静态导通关断特性进行实验,包括:永磁体对干簧管的直线接近、异面直线接近、旋转接近,得出每种接近方式下的导通区、关断区和磁滞滞后区,以及每种接近的空间分布;利用空心线圈以方波激励干簧管通断,对干簧管的工作频率、导通时间、关断时间进行实验;最后得出结论。
A simple experimental method is proposed to test static switching characteristics of a reed switch by a permanent magnet.That is to make the permanent magnet approach to the reed switch in different ways (including:approaching along a strait line on the same and different plane and approaching during rotation) and confirm the spatial distribution of the conduction zone,cut-off zone and hysteresis lag zone.In addition,the working frequency,start-up time and release time are tested by using an air-core coil and a square wave generator to turn the reed switch on/off.At last,several conclusions about the practical use of the reed switch can be drawn from this experiment.
作者
杨智超
YANG Zhichao(Engineering Training Centre,Liaoning Shihua University,Fushun 113001,China)
出处
《大学物理实验》
2019年第3期38-42,62,共6页
Physical Experiment of College
关键词
干簧管
静态开关特性
磁滞特性
PWM
reed switch
static switching characteristics
hysteresis lag characteristics
PWM
