In the field of electronics, buzzer is a common and important sound signal device. Among them, piezoelectric buzzers and electromagnetic buzzers are two main types, which have significant differences in their working principles, characteristics, and application scenarios. So, what are the differences between piezoelectric buzzers and electromagnetic buzzers? Regarding this issue, let the buzzer manufacturer give us a detailed introduction below!

1、 Working principle

Piezoelectric buzzers mainly rely on the piezoelectric effect of piezoelectric ceramic plates to operate. When a voltage is applied to a piezoelectric ceramic sheet, it undergoes mechanical deformation and produces sound. This type of buzzer usually has a simple structure and a small volume.

The electromagnetic buzzer operates based on electromagnetic principles. It consists of a coil and a diaphragm, which generates a magnetic field when current passes through the coil, causing the diaphragm to vibrate and produce sound.

2、 Characteristic differences

From the perspective of sound characteristics, the sound of piezoelectric buzzers is usually crisp, sharp, and has a higher frequency; The sound of electromagnetic buzzers is relatively low and soft.

In terms of driving methods, piezoelectric buzzers usually require higher driving voltages, while electromagnetic buzzers have relatively lower requirements for driving voltages.

In terms of power consumption, generally speaking, piezoelectric buzzers have lower power consumption and are more energy-efficient; The power consumption of electromagnetic buzzers is relatively high.

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3、 Application scenarios

Due to its crisp sound and low power consumption, piezoelectric buzzers are often used in various small electronic devices, such as calculators, electronic watches, etc.

Electromagnetic buzzers are often used in situations that require high volume or specific sound effects, such as doorbells, alarms, etc., due to their sound and driving characteristics.