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Practical sound level monitor circuit diagram

Source: InternetPublisher:司马缸砸光 Keywords: monitor audio circuit audio level Updated: 2020/06/26

The audio detector is mainly composed of IC555 connected as a Schmitt trigger. As long as the input exceeds a certain voltage, its output will change state, from high to low. R4 is used to set the threshold voltage.

Practical sound level monitor circuit diagram

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