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BIF电磁光电显示器是一个自做的小型磁传感器,它具有制作简单,开支少,体积小,传感强等特点。它的主要部件是由干簧管和发光二极管及限流电阻组成。 干簧管是由一个玻璃管内装有一对金属弹簧片组成的,市场有售。玻璃管长3.6cm,外直径约0.4cm,它具有构造简单、体积小、重量轻等特点……。金属弹簧片构成了一个常开触点式开关,将干簧管放入磁场中,金属弹簧片会磁化。当外加磁场的磁感应强度B
BIF electromagnetic photoelectric display is a self-made miniature magnetic sensor, which has the characteristics of simple production, low cost, small size and strong sensing. Its main component consists of a reed switch, a light emitting diode and a current limiting resistor. The reed switch consists of a pair of metal springs inside a glass tube and is sold on the market. The length of the glass tube is 3.6cm and the outer diameter is about 0.4cm. It has the characteristics of simple structure, small size, light weight and so on. The metal spring piece forms a normally open contact type switch. The reed switch is placed in a magnetic field, and the metal spring piece is magnetized. When the magnetic field B of the applied magnetic field