較簡(jiǎn)單的開(kāi)關(guān)有二片名叫“觸點(diǎn)”的金屬，二觸點(diǎn)接觸時(shí)使電流形成回路，二觸點(diǎn)不接觸時(shí)電流開(kāi)路。選用接點(diǎn)金屬時(shí)需考慮其對(duì)抗腐蝕的程度，因?yàn)榇蠖鄶?shù)金屬氧化后會(huì)形成絕緣的氧化物，使接點(diǎn)無(wú)法正常工作。選用接點(diǎn)金屬也需考慮其電導(dǎo)率、硬度、機(jī)械強(qiáng)度、成本及是否有毒等因素。
有時(shí)上海祥樹(shù)HBMZ6FC3 200KG會(huì)在接點(diǎn)上電鍍抗腐蝕金屬。一般會(huì)鍍?cè)诮狱c(diǎn)的接觸面，以避免因氧化物而影響其性能。有時(shí)接觸面也會(huì)使
上海祥樹(shù)HBMZ6FC3 200KG
上海祥樹(shù)HBMZ6FC3 200KG
延時(shí)開(kāi)關(guān)是使用電子元件繼電器安裝于開(kāi)關(guān)之中，延時(shí)開(kāi)關(guān)電路的一種開(kāi)關(guān)。延時(shí)開(kāi)關(guān)又分為聲控延時(shí)開(kāi)關(guān)、光控延時(shí)開(kāi)關(guān)、觸摸式延時(shí)開(kāi)關(guān)等。延時(shí)開(kāi)關(guān)的原理就是電磁繼電器的原理，繼電器的工作原理是，當(dāng)繼電器線圈通電后，線圈中的鐵芯產(chǎn)生強(qiáng)大的電磁力，吸動(dòng)銜鐵帶動(dòng)，使觸點(diǎn)1、2斷開(kāi)，1、3接通。當(dāng)線圈斷電后，彈簧使復(fù)位，使觸點(diǎn)1、2接通，1、3斷開(kāi)。我們只要把需要控制的電路接在觸點(diǎn)1、2間（1、2稱為常閉觸點(diǎn)）或觸點(diǎn)1、3間（稱為常開(kāi)觸點(diǎn)），就可以利用繼電器達(dá)到某種控制的目的
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FREUDENBERG A70X90X10 制作標(biāo)準(zhǔn)：DIN3760 材質(zhì)：FPM/FKM
BRAUN E1667-10375396 rev.1 SEL3/IEC61508
