Piezoelectric buzzer is characterized by small volume, light weight, thin thickness, low power consumption, good reliability and low cost. Therefore, the utility model is suitable for making sound devices on small electronic products such as electronic watches, pocket calculators, electronic doorbells and electronic toys.
Selection of piezoelectric buzzer
● Drive mode: if the frequency signal can not be provided for the buzzer to work, the embedded drive circuit can be considered and DC voltage can be applied. There are different sound signals such as direct tone, quick break tone and slow break tone
● Size, size will affect frequency, small size will have higher frequency.
● Voltage, calculated in V0-p (1/2 square wave).
● Voltage, driven by square wave (Vp-p), the higher the voltage, the higher the volume.