How to judge the positive and negative poles of piezoelectric ceramics? The positive and negative poles of piezoelectric ceramics, to be precise, from a professional point of view, such a device itself is also an electronic component. and there are two copper circular pads, all of which are placed i

1. The dielectric constant should be moderateUsually the dielectric constant is 10 to 1000. If the dielectric constant is too large, it will cause direct coupling between the interdigital electrodes; if the dielectric constant is too small, the impedance will be too large and it will not be easy to

Ultrasonic transducer for leak detection and gas detection application Ultrasonic range transducers are widely used, and are divided into industry, agriculture, transportation, life, medical and military according to the applied industries. According to the functions realized, ultrasonic tr

What are the common detection methods of ultrasonic transducers? As a detection device, the transducer can not only sense the measuring information, but also convert the sensed information into electrical signals or other required forms of information output according to certain rules, but the senso

Typical application examples of ultrasonic sensors Ultrasonic sensors were once considered too difficult or too expensive to operate, but with the reduction in cost and ease of use, more and more mechanical designers have incorporated ultrasonic sensors into the design of machines. Industrial applic

Three elements and principles for high-voltage polarization of piezoelectric ceramics by high-voltage polarization device three elements 1. Polarized electric field Only under the action of the polarized electric field, the electric domain can be aligned along the direction of the electric field, so

Curie temperatureWhen the temperature is higher than the curie temperature (Tc), the piezoelectric ceramic is in the paraelectric phase, and the spontaneous polarization and piezoelectricity also disappear. At the Curie temperature, many physical properties of piezoelectric ceramic materials, such a

Only under the action of the polarized electric field, the electric domains can be arranged along the direction of the electric field, so it is the main factor of the polarization condition. The higher the polarization electric field, the greater the effect of promoting the alignment of electric dom

Test principle of piezoelectric ceramic pyroelectric coefficientThe piezoelectric ceramic pyroelectric coefficient tester can measure the dielectric constant, curie temperature, pyroelectric coefficient, longitudinal piezoelectric strain constant d33, electromechanical coupling coef

New Transducer Material---Piezoelectric Ceramics Piezoelectric Transducer The main working principle of the piezoelectric ceramic transducer is the positive piezoelectric effect. After the external force is applied, the generated charge can only be preserved when the circuit has an infinite input im

Starting from the needs of military submarine communications and civil underwater communications, a single-directional planar hydroacoustic transducer with a resonance frequency of 150 kHz was fabricated, and the transmitter and receiver drive circuits of the transducer were designed based on the pr

Step 1: Components

The design of the front-end circuit of the ultrasonic sensor

Acoustic emission characteristics of crack propagation when temperature sensor slowly changes.As the temperature of PZT material piezoceramics rises and cools slowly, the acoustic emission caused by the crack growth caused by the internal thermal stress of the sample is shown in Figure 3. The heatin