The amount of deformation and the resultant noise volume caused by the deformation are related to the voltage applied across the piezo material. However, as a quick refresher, a piezoelectric device is constructed of a material that physically deforms when a voltage is applied across the device. The basics of piezoelectric transducer buzzers are described in greater detail in CUI Devices’ Buzzer Basics blog post. This blog outlines the working principles of piezo transducers, common design techniques for increasing audio output, and the advantages and limitations of each. There are several ways to affect the audio output of a piezo buzzer based upon the design of the driver circuit.
In most applications the reason for utilizing a piezoelectric transducer buzzer is to create a loud sound, where the amplitude of the sound produced by a buzzer is dependent upon both the specific buzzer selected and the signal used to drive the buzzer. How Do I Maximize the Sound of a Piezo Transducer Buzzer?
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