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tengyunqiang
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樓主  發(fā)表于: 2013-08-28 17:12
圖片：
計數器接線(xiàn)圖中的三極管是什么意思？具體應該怎么接線(xiàn)？
小不點(diǎn)大
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1樓  發(fā)表于: 2013-08-28 20:53
可以用NPN型接近開(kāi)關(guān)

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