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电源是6V,蜂鸣器额定电压是5V,用什么办法可以知道应该串联多大电阻后蜂鸣器正常工作
魔法绿骑士
准尉 十一级
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Floor 1 Posted at: 5/7/11 9:41
电源是6V,蜂鸣器额定电压是5V,用什么办法可以知道应该串联多大电阻后蜂鸣器正常工作
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Clicks: 784 Replies: 0
Author: 魔法绿骑士
Last reply: 魔法绿骑士
Last reply time: 5/7/11 9:41
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