MATCHING DEVICE WITH DOUBLE-WIRE INTERFACE FOR PIEZOELECTRIC TRANSDUCER

摘要

FIELD: physics. ^ SUBSTANCE: device includes the following: first and second inputs for connecting a piezoelectric element; a first and a second operational amplifier; ten resistors; five capacitors; a transistor; first, second and third auxiliary capacitors; first, second and third auxiliary resistors; device outputs for connecting to a vibration measurement system and to a direct current source. ^ EFFECT: high resistance to common-mode interference. ^ 3 cl, 4 dwg