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Professional solutions for piezoelectric ceramics

publish:HUIFENG  time:2017年06month23day

It is believed that you will not feel strange to the web product of the piezoelectric ceramic film, but whether it has already had a comprehensive understanding and understanding has not yet reached this level. Therefore, based on this, next, will continue the topic, only in the content, is not before, so that to promote the learning process of the product.
1. why do we use piezoelectric ceramic chips to make buzz pieces, why not weld them to piezoelectric ceramics? In addition, is the calculation of the capacitance of the piezoelectric ceramic chip the same as that of the ceramic capacitor?
If this problem occurs, it is caused by the mismatch between the welding material and the solder wire。 The capacitance calculation of piezoelectric ceramic sheet is the same as that of ceramic dielectric capacitor, and the calculation formula of plate capacitor is adopted。 So on question two, the answer is yes。
2。 if a piezoelectric ceramic chip wants to vibrate, what are the simple ways? In addition, how much voltage can it generate when it's mechanical vibration?
If you want the piezoelectric ceramic to vibrate, the simple way is to connect it to the secondary AC voltage of a small transformer. The mechanical vibration of a piezoelectric ceramic sheet can produce a voltage range of 0.1 to 0.15V, which is very small.
3. in the transducer, which thickness of the piezoelectric ceramic is thick and radial, which efficiency is higher?
In the transducer, the thickness direction vibration and radial vibration of the piezoceramic chip will be compared with the two, then from a professional point of view, it is the former, that is, the efficiency of the vibration of the thickness is higher. However, if conditions are limited, it is possible that there is only one radial vibration. So, in general, the answer to this question is to vibrate in the direction of thickness, but if there are special cases, that's not necessarily true.

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