Piezo Ceramic Disc 10mm 2Mhz 1mm Thickness
When a voltage is applied to a piezoelectric ceramic, mechanical deformation occurs as a function of voltage and frequency. On the other hand, when the piezoelectric ceramic is vibrated, an electric charge is generated.
With this principle, when a vibrator composed of two piezoelectric ceramics or a piece of piezoelectric ceramic and a metal piece, called a bimorph element, is applied with an electric signal, ultrasonic waves are emitted due to bending vibration. Conversely, when ultrasonic vibration is applied to the bimorph element, an electrical signal is generated. Based on the above effects, piezoelectric ceramics can be used as an ultrasonic sensor.
The piezoelectric ceramic wafer is a simple and light-weight electrical device. It has been widely used because of its high sensitivity, no magnetic field, and no need for copper wire and magnet, low cost, low power consumption, and convenient mass production. Suitable for the transmission and reception of ultrasonic and infrasound waves. Compared with large-area piezoelectric ceramic sheets, it can also detect pressure and vibration. The working principle is to use the reversibility of the piezoelectric effect and apply audio voltage on it to make a sound.