How to Use Electromagnetic Passive Buzzer Correctly

2016-08-17

The following about the correct use of electromagnetic passive buzzer, for the user in the design reference. The principle of the electromagnetic passive buzzer is an electro-acoustic device that converts electrical energy into the vibration of the vibrating plate by the electromagnetic effect to make a sound. When an electrical signal of a certain frequency passes through the coil inside the buzzer, an alternating magnetic field is generated. After the magnetic field is strengthened by the iron core bracket in the middle of the coil, the vibrating plate on the magnetic ring is pushed to vibrate. The internal structure and anatomy are shown in Figure 1; for detailed principles, please refer to electroacoustic knowledge >>> The working principle of electromagnetic passive buzzer The working parameters of general electromagnetic passive buzzer mainly include: coil resistance, rated voltage, S