Piezoelectric crystal resonator with reduced impedance and...

Details Piezoelectric crystal resonator with reduced impedance and... Piezoelectric crystal resonator with reduced impedance and...

H - Electricity

03

H

331/52, 333/89

H03H 9/21 (2006.01) G01L 1/16 (2006.01) H03H 9/19 (2006.01)

Patent

CA 1209652

Abstract An apparatus and method for exciting a piezoelectric crystal resonator is disclosed. An electric oscillator is connected to a double ended tuning fork piezoelectric crystal so that it flexur- ally 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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