Buzzer function
The buzzer is a small but essential electronic component that uses a piezoelectric ceramic disc. This disc is made through a sintering process involving zirconium, titanium, and lead oxide. When an audio signal is applied, the ceramic vibrates, producing sound. Buzzer types are usually categorized into two-pin or three-pin versions based on their pin configuration.
Buzzers are commonly used in air conditioners to signal remote control reception and can also serve as fault alarms in various devices. They are widely used in consumer electronics for user notifications and system alerts. The symbol of a buzzer is shown below for reference.
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