Views:1 Author:Site Editor Publish Time: 2019-07-16 Origin:Site
The piezo bimorph buzzer is made of lead zirconate titanate and lead magnesium titanate ceramic material. A silver electrode is plated on the ceramic sheet, and after being polarized and aged, it is adhered to a brass sheet or a stainless steel sheet.
The sound principle of the buzzer:
The piezo sounder ceramic element buzzer is the sound source of the sound component mainly from the piezoelectric vibrating plate. When a direct current voltage is applied between the two electrodes of the piezoelectric diaphragm, mechanical deformation is caused due to the piezoelectric effect. For a piezoelectric element having a shape distortion, its deformation is extended in the radiation direction. Therefore, when an alternating voltage is passed through the electrodes, the bending alternately occurs repeatedly, thereby generating sound waves in the air.
The piezo disc benders buzzer has clear sound, ultra-thin and light weight, no contact, no noise, high reliability, low power consumption, high conversion efficiency, no electromagnetic interference, and wide working range. Widely used in: (clock, computer, telephone, washing machine, various alarms (burglar alarms, etc.).
When we are using electric piezo diaphragm buzzer, we need to pay attention to the following points: