PIEZOELECTRIC MECHANICAL-ELECTRIC TRANSDUCER

摘要

The proposed piezoelectric mechanical-electric transducer contains a cylindrical piezoelectric element with electrodes and two matching amplifiers. The cylindrical electrode is installed at the inside surface of the piezoelectric element. Two ring-shaped electrodes are installed at the end surfaces of the piezoelectric element. Four comb-shaped electrodes are installed in pairs at the outside surface of the piezoelectric element so that the teeth of one of the electrodes are arranged between the teeth of the second electrode. The input of the first amplifier is connected to the first electrode of the first pair of the comb-shaped electrodes, and the output is connected to the first ring-shaped electrode. The input of the second amplifier is connected to the second electrode of the first pair of the comb-shaped electrodes, and the output is connected to the second ring-shaped electrode. The internal cylindrical electrode is connected to the common point of the transducer circuit.