Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1983-05-31
1985-07-23
Wong, Peter S.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
73517AV, 310341, H01L 4108, G01L 110
Patent
active
045310734
ABSTRACT:
An apparatus and method for exciting a piezoelectric crystal resonator has an electric oscillator connected to a double ended tuning fork piezoelectric crystal so that it flexurally vibrates in air at its mechanical resonant frequency. A novel electrode pattern connects the oscillator to the crystal such that changes in humidity do not affect the resonant frequency of the crystal. This arrangement is useful in measuring force, such as weight.
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Indyk Eugene S.
Ohaus Scale Corporation
Rebsch D. L.
Wong Peter S.
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