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jiesiliu10
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樓主  發(fā)表于: 2011-11-27 16:09
說(shuō)明書(shū)上是這樣寫(xiě)的：輸出形式：R=繼電器輸出（有接點(diǎn)、交流\直流負載兩用）
                              T=晶體管輸出（無(wú)接點(diǎn)、直流負載用）


問(wèn)題是，。。。：那個(gè)有接點(diǎn)、無(wú)接點(diǎn)是什么意思？？？？
aa22284
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1樓  發(fā)表于: 2011-11-28 23:02
繼電器: 內部有白金接點(diǎn)和彈簧,所以有電氣壽命和機械壽命兩種
電晶體: 內部是電子元件(矽),因為沒(méi)有接點(diǎn),所以沒(méi)有上述兩種壽命,
ws041060
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2樓  發(fā)表于: 2011-11-29 10:14
差不多吧�。�！

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