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求蜂鸣器beep=0时发声的电路图

2025-03-26 12:07:29

推荐回答（2个）

回答1：

可以啊。用三极管8550 ，PNP管，+5V接蜂鸣器接到E极，C极接地，B级接510欧姆，忘记问你蜂鸣器是5V的吗？

回答2：

如果你当处用的NPN三极管，基极“1”响。就改成PNP三极管，不就实现“0”响了！

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