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cyh1986
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樓主  發(fā)表于: 2018-05-19 18:02
最近有個(gè)項目上面要幾個(gè)接近開(kāi)關(guān)同時(shí)碰到之后才能動(dòng)作。我想有沒(méi)有這樣一個(gè)東西,類(lèi)似于安全繼電器,但是價(jià)格便宜一點(diǎn)的。用接近開(kāi)關(guān)驅動(dòng)繼電器然后串并聯(lián),接線(xiàn)麻煩了點(diǎn)。
sjbandmm
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1樓  發(fā)表于: 2018-05-19 21:35
可以找一些電源電壓比較寬泛的接近開(kāi)關(guān),串聯(lián)起來(lái)使用,一般接近開(kāi)關(guān)串3個(gè)是沒(méi)問(wèn)題的,如果需要大于3個(gè),再用繼電器串聯(lián)起來(lái),2個(gè)繼電器可以實(shí)現6個(gè)接近開(kāi)關(guān)串聯(lián)。

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