Question: 9 . 1 . Microphone High Input Impedance Amplifier... A lead - zirconate - titanate ( LZT ) piezoelectric disk is used to make a

9.1. Microphone High Input Impedance Amplifier...
A lead-zirconate-titanate (LZT) piezoelectric disk is used to make a crystal microphone. The LZT disk has an effective area of 1 cm2, a piezo-strain coefficient of d=320 pC/N, =1250(dielectric constant, e0=8.8510-12 F/m), and h=1mm (thickness). The total leakage conductance of the sensor is 10-11 S.Vcc=+3V.

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