Environmental Noise Monitor

Posted on Dec 11, 2010

Environmental noise monitor circuit is shown. It mainly consists of high gain mu Specification for Zinc composition. Measured noise signal is indicated by the ammeter. ICl oper

Environmental Noise Monitor
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ational amplifier connected as amplifier noise, the noise signal to be detected by the microphone BM applied to the inverting input of ICl, zoom in and then full-wave rectification by the diode VDl ~ VD4, last ammeter deflection, thereby indicating the intensity of the ambient noise. When adjusted, the short ends of the first microphone, adjust the zero potentiometer RP2, ammeter indicates 0. Adjustment potentiometer RPl, can change the sensitivity of the ammeter. Corresponding to the intensity of the noise meter scale values available a standard to monitor calibration.

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