Piezoelectric ceramics are a kind of polycrystals with piezoelectric properties and an important part of information functional piezoelectric ceramics. With the advantages of high electromechanical coupling coefficient, low price and easy mass production, piezoelectric ceramics have been widely used

At present, piezoelectric ceramic transformer has been widely used in a series of fields, including household appliances and high-tech military products. One of the most typical applications is to drive cold cathode fluorescent lamp. This is because the voltage and current characteristics of piezo

Other forms of piezoelectric ceramic transformerIn addition to the above three commonly piezoelectric ceramic transformers, other types of piezoelectric ceramic transformers have been developed, the structure of which is similar to the above three types, but some innovations have been made in some a

The theoretical research and application status of piezo ceramic disc transducer are discussed and commented comprehensively, and the existing problems are analyzed. Piezoelectric ceramic transformer is a new type of solid-state electronic device. It has the advantages of simple structure and proces

Piezoelectric materials piezoelectric disc transducer have excellent force-electric coupling properties and are widely used in the field of non-destructive testing. The piezoelectric vibration nondestructive testing technology has the following characteristics: 1) it id sensitive to small internal d

The rapid development of the world economy has led to a sharp increase in energy consumption. With the depletion of non-renewable energy sources and the protection of the environment, countries are vigorously developing sustainable clean energy. Clean energy such as light, wind and solar energy is g

The high-frequency pulse circuit of the ultrasonic flaw detector generates a high-frequency pulse oscillating current to be applied to the piezoelectric ceramic crystal in the ultrasonic transducer (probe), which excites the ultrasonic wave and transmits it to the workpiece to be inspected, and when

Ultrasonic diffraction and scattering characteristics:When the ultrasonic wave propagates through the medium, it encounters a heterogeneous interface (such as a defect). According to the huygens principle, a diffraction phenomenon occurs at the edge thereof, and a newly excited diffraction wave is g

The sensor rod acts as a mechanical resonator and is inserted into the feedback circuit of the excitation amplifier. Under the action of the excitation coil, the sensor rod generates longitudinal ultrasonic vibration. The signal is detected by the piezoelectric wafer and is positively fed back to th

Sound wave is a kind of longitudinal wave that can be felt by the human ear. Its frequency range is 16Hz~2KHz. When the frequency of sound waves is lower than 16 Hz, it is called infrasound wave, and when it is higher than 2 kHz, it is called ultrasonic wave. Generally, sound waves are having a freq

Piezoelectric ceramics are a type of crystal material that undergoes a shape change such as compression or elongation when subjected to mechanical stress. As the shape changes, different charges are generated on both sides of the crystal. Conversely, adding a different voltage across the linear piez

Composite vector hydrophoneIn order to improve the detection performance of passive sonar, research has developed a vector hydrophone that can receive and utilize scalar parameters (sound pressure) and vector parameters (vibration speed) in the sound field, making full use of the information in the

Transducer is an important part of sonar. From the perspective of the history of hydroacoustics, every step of the development of underwater acoustics is inseparable from the development of transducer technology. Since hydroacoustic transducers play a key role in underwater acoustic engineering, man

Piezoelectric transformerPiezoelectric transformers have been developed since the 1950s, but they were not commercialized until the 1990s. The successful application of piezoelectric transformers, on the one hand, the advancement of materials is the use of sub-micron fine PZT piezo ceramic materials