The development of piezoelectric material barium titanate

          The development of piezoelectric material barium titanate

 Since the birth of the first piezo ceramic type,it is piezoelectric material barium titanate in 1942, piezoelectric ceramics have been used in various aspects of people's lives. Piezoelectric materials are used as the coupling of electromechanical coupling. Their applications of multi-layered piezoelectric disc crystal can be roughly divided into two major categories. Application of piezoelectric ceramic has frequency control devices.which is represented by piezoelectric resonators and quasi-static applications of mutual conversion of mechanical energy and electric energy. Piezoelectric ceramics after piezoelectric devices own piezoelectric ceramic pzt chip frequency control devices, That is, the piezoelectric vibrator has a natural vibration frequency that is determined by its size, and a stable electric oscillation of piezoelectric ceramic vibration sensor can be obtained by utilizing the natural vibration frequency of the piezoelectric vibrator and the piezoelectric effect.

  When the frequency of the PZT material ultrasonic transducer is the same as the natural vibration frequency of the piezoelectric vibrator Resonance is induced, and the amplitude is greatly increased. In this process, the alternating electric field of radial mode piezoelectric tubes generates strain through the inverse piezoelectric effect, and the strain generates current through the positive piezoelectric effect, which realizes the maximum mutual conversion of electric energy and mechanical energy. This feature utilizes the piezoelectric vibrator. It can make various kinds of filters, resonators and other devices. These devices are low cost, small size, do not absorb moisture, long life, good frequency stability, The equivalent quality factor of piezoelectric sensor circuit  is higher than the LC filter, the applicable frequency range is wide, and the precision is high. Especially for multi-channel communication, amplitude modulation reception, and various radio communication and measurement instruments, the anti-jamming ability can be improved. Therefore, the equivalent is replaced. it is large part of electromagnetic oscillators and filters, and this trend is still evolving.