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电容测量
- 用NE555和被测电容构成双稳态触发器，单片机检测触发器的脉冲频率，算出电容值。还有量程自动切换功能(The bistable trigger is composed of NE555 and measured capacitance. The pulse frequency of trigger is detected by single chip microcomputer, and the capacitance value is calculated. And the automatic