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磁性開關(guān)AL-02R

磁性開關(guān)是什么

磁性開關(guān)是通過磁鐵來感應(yīng)的開關(guān)裝置，常用的磁鐵有燒結(jié)釹鐵硼、橡膠磁和永磁鐵氧體。其開關(guān)是干式舌簧管，簡稱干簧管，是一種有觸點(diǎn)的無源電子開關(guān)元件，外殼通常是一根密封的玻璃管，管中灌有惰性氣體，還裝有兩個(gè)鐵質(zhì)的彈性huangpian電板。

有一種磁性開關(guān)是在密閉的塑料管或金屬內(nèi)設(shè)置多點(diǎn)或一點(diǎn)的磁簧開關(guān)，整個(gè)容器中空，內(nèi)部裝有環(huán)形磁鐵的浮球，磁簧開關(guān)和浮球被固定環(huán)控制在相關(guān)位置上，浮球能在一定范圍內(nèi)浮動。開關(guān)的開與關(guān)的動作由浮球內(nèi)的磁鐵去吸引磁簧開關(guān)的接點(diǎn)來產(chǎn)生。