The piezoelectric buzzer accompanies us every day, and you may not notice it. Which electrical appliances in our daily life use buzzers, let me introduce to you: For example, we usually use rice cookers, washing machines, electric juicers, air conditioners, etc., all of which use buzzers as reminders or alarms. Now the buzzer is an indispensable and important component in high-intelligence household appliances. To make the buzzer last longer, pay attention to the following points during use:

1. Too high welding temperature can easily cause deformation of the buzzer shell, loose pins, and cause no sound or low noise.

2. The starting voltage of the piezoelectric buzzer is too low or too large, and it is prone to whispering or rustling during use.

3. After the buzzer has been stored for a period of time, the sound will be small, and it will become normal after a period of use. In this case, the buzzer may be affected by the humid environment, and it is necessary to pay attention to moisture prevention.

The piezoelectric buzzer accompanies us every day, and you may not notice it. Which electrical appliances in our daily life use buzzers, let me introduce to you: For example, we usually use rice cookers, washing machines, electric juicers, air conditioners, etc., all of which use buzzers as reminders or alarms. Now the buzzer is an indispensable and important component in high-intelligence household appliances. To make the buzzer last longer, pay attention to the following points during use:

1. Too high welding temperature can easily cause deformation of the buzzer shell, loose pins, and cause no sound or low noise.

2. The starting voltage of the piezoelectric buzzer is too low or too large, and it is prone to whispering or rustling during use.

3. After the buzzer has been stored for a period of time, the sound will be small, and it will become normal after a period of use. In this case, the buzzer may be affected by the humid environment, and it is necessary to pay attention to moisture prevention.

4. Piezoelectric buzzer effect: when certain dielectrics are deformed by external forces in a certain direction, polarization will occur inside them, and at the same time, positive and negative charges will appear on its two opposite surfaces. When the external force is removed, it will return to an uncharged state. This phenomenon is called the positive piezoelectric effect. When the direction of the force changes, the polarity of the charge also changes. On the contrary, when an electric field is applied in the polarization direction of dielectrics, these dielectrics will also deform. After the electric field is removed, the deformation of the dielectrics will disappear. This phenomenon is called inverse piezoelectric effect, or electrostriction. A type of sensor developed based on the piezoelectric effect of a dielectric is called a piezoelectric sensor.