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Two effects of piezoelectric ceramics

2019-12-04

Piezoelectric ceramics, in which the positive piezoelectric effect and the reverse piezoelectric effect, what is the specific? Is it a physical piezoelectric property? What is the generation life of piezoelectric ceramics? What is the output current and voltage of piezoelectric ceramics in lighters? These problems are all related to piezoelectric ceramics, so let's learn about them.






1. What are the positive and reverse piezoelectric effects of piezoelectric ceramics? Is it a physical piezoelectric property?



In piezoelectric ceramics, its positive piezoelectric effect, which is simply understood, is to transform mechanical effect into electrical effect. The converse piezoelectric effect, on the contrary, transforms the electrical effect into mechanical effect. In addition, it should be noted that piezoelectric ceramics have spontaneous polarization property, and they can change under the action of external electric field. At the same time, these two effects belong to the physical piezoelectric properties of piezoelectric ceramics.






2. What is the service life of Piezoelectric ceramic power generation? What is the output current and voltage of piezoelectric ceramics in lighters?



Generally speaking, the power generation life of piezoelectric ceramics is about 100000 times. For the piezoelectric ceramics in lighters, they are deformed under the action of external forces, so as to generate a voltage of 4000-6000 volts in an instant, even tens of thousands of volts. As for its current, it is relatively small, about a few microamps.






For piezoelectric ceramics in lighters, the main characteristic is to produce voltage by deforming them with external force. Moreover, the greater the deformation, the greater the voltage. In addition, its electric shock ability is very strong. However, because the current generated by it is very small, it will not cause harm to people and there will be no danger.






For piezoelectric ceramics, we believe that through the above knowledge content, we can get new harvest and inspiration from it, so as to make our own progress, and accumulate the amount of knowledge in this area, so as to make good use of it in practical work, in case of unexpected needs. In addition, only in this way can the role and value of the knowledge be well reflected, rather than wasted.

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