Buzzer is divided into piezoelectric buzzer and electromagnetic buzzer. Piezoelectric type for piezoelectric ceramic chip pronunciation, current is relatively small...
The piezoelectric buzzer is mainly divided into two types: separately excited type and self-excited type. The main precautions of these two types of buzzers are as follows...
In fact, there are many ways to distinguish between active and passive buzzers. The simplest one is appearance recognition. You can see that the passive buzzer is...
