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关注:1
2013-05-23 12:21
求翻译:Direct Current always flows in the same direction, but it may increase and decrease.A DC voltage is always positive (or always negative),but it may increase and decrease.Electronic circuits normally require a steady DC supply which is constant at one value or a smooth DC supply which has a small variation called ripple是什么意思?![]() ![]() Direct Current always flows in the same direction, but it may increase and decrease.A DC voltage is always positive (or always negative),but it may increase and decrease.Electronic circuits normally require a steady DC supply which is constant at one value or a smooth DC supply which has a small variation called ripple
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