如何分别NE555芯片 ne555芯片
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\u65f6\u57fa\u82af\u7247NE555\u67098\u4e2a\u5f15\u811a. 1\uff0c\u7535\u6e90\u5730\u3002 2\uff0c\u4f4e\u89e6\u53d1\u7aef\uff08\u4f4e\u7535\u5e73\u89e6\u53d1\uff09\u30023\uff0c\u8f93\u51fa\u30024\uff0c\u590d\u4f4d\uff08\u4f4e\u7535\u5e73\uff095\uff0c\u7535\u538b\u63a7\u5236\uff08\u8c03\u8282\u6bd4\u8f83\u5668\u7684\u89e6\u53d1\u7535\u5e73\uff09\u30026\uff0c\u9ad8\u89e6\u53d1\u7aef\uff08\u9ad8\u7535\u5e73\u89e6\u53d1\uff09\u30027\uff0c\u653e\u7535\u7aef\uff08\u4e5f\u53ef\u4f5c\u4e3a\u96c6\u7535\u6781\u5f00\u8def\u8f93\u51fa\uff09\u30028\uff0c\u6b63\u7535\u6e90\u3002
就有 555 标志啊，或者 7555，前面和后面可能有一些字母。八只脚的。斯密特触发器不具有过流保护功能.斯密特触发器又称斯密特与非门，是具有滞后特性的数字传输门. ①电路具有两个阈值电压,分别称为正向阈值电压和负向阈值电压
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