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如何判斷磁敏開關(guān)好壞?
發(fā)布時(shí)間:2016-12-27   瀏覽:1405次
如何判斷磁敏開關(guān)好壞?

       磁敏開關(guān)還可以叫做干簧管,它是靠磁性物質(zhì)使它動(dòng)作的??梢杂靡粋€(gè)電阻表接在干簧管的兩端,再用一塊磁鐵作靠近它和遠(yuǎn)離它的動(dòng)作,如果電阻值在零左右與無(wú)窮大之間變化,那就說明這個(gè)干簧管是好的。如果一直是零或者一直是無(wú)窮大,那么它就是壞的了。看磁敏開關(guān)上的銘牌,假如是9-15的就是當(dāng)環(huán)境溫度一直降,降到9度之前開關(guān)應(yīng)該接通,然后環(huán)境溫度往上升,升到15度之前應(yīng)該斷開。一般能開能關(guān)說明就是好的。

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