Test apparatus for determination of vibration characteristics of

Details Test apparatus for determination of vibration characteristics of Test apparatus for determination of vibration characteristics of

1982-01-19

1984-08-21

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 57Q, G01R 2922

Patent

active

044672713

ABSTRACT:
An AC generator may be connected to the signal leads of a piezoelectric transducer in order to induce mechanical vibrations in the transducer via the inverse piezoelectric effect. For determination of the vibration characteristics of the transducer provisions are made for a subtraction unit, whose one input is fed with the excitation signal of the AC generator while the other input is connected to the signal leads of the transducer. An evaluation unit is connected to the output of the subtraction unit; it displays and processes the measurement signal derived as the difference of the response signal of the transducer and a signal proportional to the excitation signal.

REFERENCES:
patent: 3832630 (1974-08-01), Micol

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