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destiny_977
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樓主  發(fā)表于: 2023-09-18 15:32
一個(gè)直流電源給汽車(chē)空調供電,電壓DC12.8V,動(dòng)態(tài)時(shí)壓降不超過(guò)1V。    電源直接給空調供電時(shí),空調打到最高檔,電源反饋電流25A左右,通過(guò)設備供電時(shí),反饋電流只有14A左右,這是啥情況。線(xiàn)的阻值是恒定的,電壓壓降只有1V左右,為啥電流有10A的區別
wsxebjz
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1樓  發(fā)表于: 2023-09-19 18:40
淘寶710的霍爾傳感器也要不了幾塊錢(qián),輸出直流電壓信號

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