Tell you about how to use the electromagnetic buzzer in life without breaking down?

to tell you how to use the electromagnetic buzzer in life will not be bad?

Electromagnetic buzzer accompanies us every day. You may not notice it at ordinary times. Let me introduce to you which electrical appliances use buzzers in our daily life: such as rice cookers, washing machines, electric juicers, air conditioners, etc. We usually use buzzers to prompt or alarm. Buzzers are now an indispensable and important part of highly intelligent home appliances. In order to extend the service life of electromagnetic buzzers, please pay attention to the following points during use:

1. If the welding temperature is too high, it is easy to cause the buzzer shell to deform and the pins are loose, resulting in no sound or low sound.

2. The starting voltage of the piezoelectric buzzer is too low or too high, and it is prone to low sound or sand noise during use.

3. The electromagnetic buzzer has a low sound after being stored for a period of time and becomes normal after being used for a period of time. This situation may be that the buzzer is affected by a humid environment and needs to be protected from moisture.

The piezoelectric buzzer accompanies us every day. You may not notice it at ordinary times. Let me introduce to you which electrical appliances use buzzers in our daily life: such as rice cookers, washing machines, electric juicers, Air conditioners, etc., we usually use buzzers to prompt or alarm. Buzzers are now an indispensable and important part of highly intelligent home appliances. In order to extend the service life of buzzers, please pay attention to the following points during use:

1. If the welding temperature is too high, it is easy to cause the buzzer shell to deform and the pins are loose, resulting in no sound or low sound.

2. The starting voltage of the piezoelectric buzzer is too low or too high, and the sound is low or sandy during use.

3. The buzzer is low after being stored for a period of time and becomes normal after being used for a period of time. This situation may be that the electromagnetic buzzer is affected by the humid environment and needs to be protected from moisture.

3. Piezoelectric buzzer effect: When some dielectrics are deformed by an external force in a certain direction, their internal polarization will occur, and opposite charges will appear on their opposite surfaces. When the external force is removed, It will return to the uncharged state. This phenomenon is called the positive piezoelectric effect. When the direction of the force changes, the polarity of the charge will also change. On the contrary, when an electric field is applied in the polarization direction of the dielectric, the dielectric will also deform. After the electric field is removed, the deformation of the dielectric will disappear. This phenomenon is called the inverse piezoelectric effect, or electrostriction phenomenon. A kind of sensor based on the piezoelectric effect of the dielectric is called a piezoelectric sensor.

Electromagnetic Buzzer and Its Principle

1. Piezoelectric Buzzer The piezoelectric buzzer is mainly composed of multivibrator, piezoelectric buzzer, impedance matcher, resonant box, shell, etc. Some piezoelectric buzzers are also equipped with light-emitting diodes on the shell. The piezoelectric buzzer is made of lead zirconate titanate or lead magnesium niobate piezoelectric ceramic material. The ceramic sheet is plated with silver electrodes on both sides, polarized, aged, and bonded with brass or stainless steel.

2. Electromagnetic buzzer The electromagnetic buzzer is composed of an oscillator, an electromagnetic coil, a magnet, a diaphragm and a housing. After the power is turned on, the audio signal current generated by the oscillator passes through the electromagnetic coil to make the electromagnetic coil generate a magnetic field. Under the interaction of the electromagnetic coil and the magnet, the diaphragm vibrates periodically.

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