Piezoelectric valve

Abstract

A piezoelectric valve (1) driven by a DC component comprises: a plurality of piezoelectric elements (12A, 12B) electrically connected in parallel via electrodes (14) formed by a metal coating; a conductive vibrating plate (13) connected to the plurality of piezoelectric elements (12A, 12B) via the electrodes (14); and a resistor (22) electrically connected to the plurality of piezoelectric elements (12A, 12B); wherein the electrical impedance value (R1) of the resistor (22) is the insulation resistance value (R2) of the piezoelectric elements (12A, 12B). A piezoelectric valve (1) is a piezoelectric valve driven by a DC component, and includes a plurality of piezoelectric elements (12A, 12B) electrically connected in parallel via electrodes (14) made of a metal-plated film; a conductive diaphragm (13) joined to the plurality of piezoelectric elements via the electrodes; and a resistor (22) electrically connected to the plurality of piezoelectric elements, and an electric resistance value (R1) of the resistor is less than an insulation resistance value (R2) of each of the piezoelectric elements.

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