Piezoelectric transducer, notably for pressure measurement

Details Piezoelectric transducer, notably for pressure measurement Piezoelectric transducer, notably for pressure measurement

1983-08-04

1985-12-31

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310346, 310350, 310361, 310367, 310369, 73703, 73708, H01L 4108

Patent

active

045623759

ABSTRACT:
In a pressure transducer of the piezoelectric type, a resonator (10) is made up of a pellet (16) mounted inside an element designed to be subjected to the action of a pressure on its exterior face (18). The pellet (16) and the element (12) are cut in the same quartz block, using a cut which provides two vibration modes. The forces resulting from the external pressure are transmitted to the edge of the pellet (16) by connecting bridges (22, 23) whose orientation is chosen so that one of the vibration modes has maximum sensitivity to the forces while the other mode has a practically zero sensitivity.

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patent: 4485323 (1984-11-01), Corbett
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Design of High Performance SC Resonators, by R. Ward, Proc. 35th Ann. Freq. Control Symposium, USAERADCOM, Ft. Monmouth, N.J., May 1981.
The Linear Quartz Thermometer--a New Tool for Measuring Absolute and Difference Temperatures, by Benjaminson, Hewlett-Packard Journal, vol. 16, No. 7, Mar. 1965.
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