Electroacoustic component - piezoelectric ceramic pronunciation chip

Piezo sounder ceramic element is a piezoelectric ceramic that can vibrate and sing under the excitation of an alternating electric field after being bonded to a metal substrate. However, because the acoustic impedance of the air does not match, the sound emitted is very small; the high-decibel buzzer is the pressure. The piezo electric buzzer is mounted in a certain volume of the cavity by a certain fixed manner to generate resonance to obtain an amplified sound. Some people directly call the buzzer piece a piezoelectric ceramic sounding piece or a piezoelectric piece.

The sound source of the piezoelectric ceramic sounding element is mainly from the piezoelectric vibration plate. The piezoelectric vibrating plate is composed of a piezoelectric ceramic bimorph on which electrodes are printed on both sides, and a metal piezo diaphragm (brass or stainless steel, etc.). Using a binder, the piezoelectric vibrating plate and the metal piece are bonded together to form what we call a piezoelectric ceramic sounding piece.