PIEZOELECTRIC ELEMENT FOR AN AUTOMATIC FREQUENCY CONTROL CIRCUIT, OSCILLATING MECHANICAL SYSTEM AND DEVICE COMPRISING THE SAME

A piezoelectric element for an automatic frequency control circuit. The element includes a balance spring formed of a piezoelectric crystal strip, a first electrode connected to the automatic control circuit, and disposed on at least a first side of the strip, and a second electrode connected to the...

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Bibliographic Details
Main Authors HAEMMERLI, Alexandre, Gueissaz, Francois, Dalla Piazza, Silvio, Schnyder, Bernhard, Tombez, Lionel
Format Patent
LanguageEnglish
Published 14.03.2019
Subjects
ELECTROMECHANICAL CLOCKS OR WATCHES
HOROLOGY
PHYSICS
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Summary:A piezoelectric element for an automatic frequency control circuit. The element includes a balance spring formed of a piezoelectric crystal strip, a first electrode connected to the automatic control circuit, and disposed on at least a first side of the strip, and a second electrode connected to the automatic control circuit and disposed on at least a second side of the strip. The first and second electrodes are placed on one portion or over the entire length of the balance spring in a predetermined angular distribution.
Bibliography:Application Number: US201816112817