Brüel & Kjær 2623 Amplificador
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Common Features: ■ Wide frequency range ■ Wide dynamic range ■ High input impedance ■ Wide application range ■ Small size Preamplifiers Types 2616 2623 2624 2625 and 2626 When measuring vibration by means of an accelerometer it is necessary to incorporate a preamplifier between this and the measuring Amplifier. The preamplifier is introduced in the measuring circuit for two reasons: 1) to amplify the relatively weak output signal from the accelerometer and 2) to transform the high output impedance of the accelerometer into a lower value. The signal from the piezoelectric accelerometer appears as a voltage across a capacitive impedance. This charge is proportional to the acceleration to which the accelerometer is exposed.
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Scaned documento, todas legível.
Data de upload:
2017 06 01
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