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chao ban minh cung dang gap rac roi ve mach ic555 de hen tre co thoi gian tre la 1 phut ne
sao minh dung diet tro, tu cung nhu vay ma sao ko chay moi dau chu. ah con van de nay chu ic555 sao minh cap nguon 12vdc do ma ic nong nhu bi chay vay ngia la sao nhi???????????vay minh fai xai 2 nguon ha ta??? relay 12vdc con 555 chay nguon khac nua chac chet wa
sao minh dung diet tro, tu cung nhu vay ma sao ko chay moi dau chu. ah con van de nay chu ic555 sao minh cap nguon 12vdc do ma ic nong nhu bi chay vay ngia la sao nhi???????????vay minh fai xai 2 nguon ha ta??? relay 12vdc con 555 chay nguon khac nua chac chet wa
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