The buzzer is a very important feature in electrical and electronic appliances. The functions of a buzzer are numerous. They can be used to raise an alarm, observe and note the status of equipment, indicate commands, enhance user interactions, etc. So if you want to design a product like a do

What is a mechanical buzzer? The mechanical buzzer is a special sub-category of the electromagnetic buzzer, which consists of an oscillator, an electromagnetic coil, a magnet, a casing and etc.The mechanical buzzer is always with high impedance, DC resistance is infinite, AC impedance is also very l