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quinto173
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樓主  發(fā)表于: 2022-08-08 15:49
圖片：
如下圖，請問(wèn)各位大佬這個(gè)方法是可行的嗎？看了下精密電阻還有3W、5W和10W的，這個(gè)要怎么選擇呢
langui
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1樓  發(fā)表于: 2022-08-09 16:37
過(guò)20mA能用多大的電阻，1/4W足矣
樓主留言：
好的，謝謝老哥
ldf710613
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2樓  發(fā)表于: 2022-08-09 16:42

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