How to select the buzzer? Yongxing Electronics tells you

Buzzer is a widely used in the electronics and communication industry, its main role is to convert electrical signals into sound signals. In different industries, the application scenarios and requirements of buzzers are not the same, so you need to understand the relevant industry knowledge when choosing a buzzer.

First, Classification of buzzers

Buzzers can be divided into active buzzers and passive buzzers according to the way of sound production. Active buzzers need an external power supply to sound, while passive buzzers do not need an external power supply, and their sound is achieved through a resonant cavity. According to the appearance shape, the buzzer can be divided into round, square, rectangular, oval and other different shapes.

Second, the working principle of the buzzer

There are piezoelectric ceramic materials in the resonator of the passive buzzer. When the voltage is applied, the piezoelectric ceramic materials will vibrate, and then vibrate the resonator to produce sound. Active buzzers require an external power supply to control the sound of the buzzer through changes in the external voltage.

Third, Application scenarios of the buzzer

Buzzers are widely used in communication, electronics, home appliances, automotive and other industries. Common application scenarios include:

1. Communication industry: mobile phones, walkie-talkies and other devices that need to issue sound prompts.

2. Electronic industry: computer motherboards, electronic clocks, televisions and other equipment that need to issue sound prompts.

3. Home appliance industry: microwave ovens, washing machines, refrigerators and other appliances that need to issue sound prompts.

4. Automotive industry: car alarms, reversing radars and other automotive equipment that need to issue sound prompts.

Fourth, how to choose the right buzzer

When choosing the right buzzer, you need to consider the following aspects:

1. Sound quality: The sound quality of the buzzer directly affects its sound effect, and it is necessary to choose a buzzer with clear sound quality and moderate volume when selecting.

2. Size: Different application scenarios require different sizes of buzzers, such as mobile phones need small buzzers, and cars need larger buzzers.

3. Waterproof performance: For the buzzer that needs to be used in a humid environment, it is necessary to choose a buzzer with waterproof performance.

4. Voltage: The active buzzer needs an external voltage supply, so the corresponding buzzer needs to be selected according to the voltage of the circuit.

In short, the selection of the appropriate buzzer needs to be selected according to the specific application scenario and requirements. Before selecting a buzzer, learn about the classification, working principles, application scenarios, and uses of the buzzer, and select a proper buzzer based on your requirements.