Correct judgment of the positive and negative electrodes of piezoelectric ceramics and how to sound
Publish Time: 2019-08-07 Origin: Site
1. Piezoelectric ceramic transducer, how to say specifically?
Piezoelectric ceramic sheet, which is a kind of electronic sounding component from a professional point of view, dielectric material of piezo ceramic ring is placed in the two copper circular electrodes, and an AC audio signal is connected thereto, so that the piezoelectric ceramic crystal will occur according to the frequency of occurrence of the signal, and the corresponding vibration will occur. Therefore, according to its principle, it can be used in pronunciation electronic watches, electronic timepieces, timers, and toys.
2. Piezoelectric ceramic transducer, do they have positive and negative electrodes? How to judge?
Piezoelectric ceramic sheets, which have positive and negative electrodes of gold plating piezo ceramic, and this is what we all should know and understand. As for the judgment method, and simple, first draw two wires on the two poles, then use the current block of the multimeter to see the direction of the pointer swinging. If it is pendulum to the right, then the contact with the red pen is positive. On the contrary, it is the positive electrode that is in contact with the black test pen.
3. Piezoelectric ceramic sheets and metal substrates. Can these two sounds after bonding? In addition, what is available for piezoelectric ceramic transducer sheets in DXP?
The piezoelectric ceramic and the metal substrate piezoelectric discs transducer is vibrated and audible under the excitation of an alternating electric field after being bonding, but if the acoustic impedance does not match, the sound is small. And in DXP, it can be replaced with a small buzzer.