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数码管电压的允许最大与最小为多少?
数码管电压的允许最大与最小为多少?
2025-04-03 17:34:15
推荐回答(1个)
回答1:
数码管内部为发光二极管,电压至少应该大于二极管的导通压降,其实电压大小不是很重要,主要是电流,不要超过数码管发光二极管的允许电流,一般为10ma左右,电压大了就用限流电阻
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