Velleman Products & Buzzers PIEZO TRANSDUCER 1.5 VAC 2.048kHz 88dB PCB TYPE

This piezoelectric ceramic buzzer has a simple design, where a ceramic piezo element is glued to a vibrating plate. This piezo ceramic element expands or contracts when an alternating voltage is applied. This property is used to bend the vibrating plate, thereby producing sound.

The method of generating acoustic vibrations can be divided into internally driven oscillation and externally driven oscillation. The internally driven oscillation has the lowest impedance and produces sound with the positive feedback of the oscillator. This allows you to generate sound pressure using a simple circuit. The external oscillator uses a fixed frequency and generates sound with an oscillator circuit.