Multilayer piezoelectric ceramic transformer

Our previous work mechanism of piezoelectric ceramic transformer done by detailed instructions, which can be seen working process of the piezoelectric transformer Versatile, including electric, acoustic, piezoelectric science, solid state physics and many other areas, it is not alone a simplified model for the interpretation of its operating characteristics. People in order to study the properties of piezoelectric transformer in the circuit to figure out, made many piezoelectric transformer circuit model, the structure of the model parameter values and the multilayer piezoelectric transformer is closely related to the multi-layer electrode structure and dielectric materials constant determines the input capacitance Cinput larger, from tens to hundreds of nF nF, the output capacitor Cout is generally due to a larger distance between electrodes tens of pF. Next we want to say is that the multilayer piezoelectric transformer to its advantage decision applications. 

The liquid crystal display requires a uniform image in the display backlight, the backlight is provided by one or more than the cold cathode fluorescent tube (CCFL) light. The backlight power supply normally used in conventional small wound transformer, which can generate high pressure to drive the CCFL, since the size limit, resulting in breakdown of the high pressure generated when the work, ignition, and even combustion phenomena and is accompanied by a larger electromagnetic interference, to the practical application brings obstacles. And the boost ratio of the multilayer piezoelectric transformer, so that the high pressure will not break down in the environment, the advantages of such electromagnetic interference to overcome the shortcomings of small wound transformer. It also has a high conversion efficiency, small size, light weight, good output waveform, etc., is very suitable for driving CCFL, used in LCD backlight power supply is also more extensive.