Working principle of piezoelectric ceramic chip transformer

The piezoelectric effect of polarized piezoelectric body is used to realize the voltage output of piezoelectric ceramic plate transformer. Its input part driven by a sinusoidal voltage signal, sine voltage signal by the inverse piezoelectric effect of vibration, the vibration wave through the input and output parts of mechanical coupling coupled to the output, the output section through charge produces positive piezoelectric effect, so as to realize the power of the piezoelectric body, two transformation of mechanical energy and electric energy, and obtain the highest under the resonant frequency of piezoelectric transformer output voltage. Compared with the electromagnetic transformer, the transformer has the advantages of small size, light weight, high power density, high efficiency, breakdown resistance, high temperature resistance, not afraid of combustion, no electromagnetic interference and electromagnetic noise, simple structure, convenient manufacturing, easy mass production, has become an ideal substitute for some fields of electromagnetic transformer. This type of transformer is used for switch converters, laptop computers, neon lights drives, etc.

The working principle of piezoceramic chip transformer is to utilize the characteristics of piezoceramic material -- the positive piezoelectric effect and the inverse piezoelectric effect. The so-called positive piezoelectric effect refers to the charge or voltage generated by the material under the action of force (or deformation), while the inverse piezoelectric effect refers to the deformation or vibration caused by the material when the voltage is applied. Of piezoelectric ceramic transformer working principle is to use the positive and negative piezoelectric effect of piezoelectric ceramic material properties to design piezoelectric ceramic electrode polarization direction and orientation of characteristic, the use of negative pressure electric effect so that are connected to the input end of piezoelectric ceramic mechanical vibration of the under voltage is then use is piezoelectric effect that are connected to the output voltage of piezoelectric ceramic body. When the impedance of the input end and the output end is not equal, the voltage and current at both ends of the input end and the output end are not equal, so as to realize the conversion of the voltage and current between the input end and the output end.

1, piezoelectric vibrator and material

2, piezoelectric electroacoustic devices: piezoelectric ceramic buzzer, microphone, receiver, piezoelectric horn

3, piezoelectric ultrasonic transducer: ultrasonic cleaning machine, ultrasonic atomizer, ultrasonic beauty treatment, ultrasonic transducer, ultrasonic testing

4, information processing part: piezoelectric ceramic filter, resonator, notch filter, frequency monitor, surface sound wave, delay line

5, power device: igniter, ultrasonic cutting, ultrasonic welding, piezoelectric motor, piezoelectric transformer, micro displacement device

6, vertical distance. Piezoelectric sensor: speedometer, accelerometer, angular velocity meter, vibration sensor, ultrasonic probe

7, photoelectric devices: light modulator, light valve, electro-optical display, optical information storage, image storage and display

Currently, global sales of piezoelectric ceramics are close to $150 million, accelerating the transformation of various industries and the second leap of enterprises.