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Application of piezoelectric ceramic power amplifier to drive piezoelectric ultrasonic transducer

发布:2021-09-27

A transducer refers to a device that can realize energy conversion, that is, a device that can convert one form of energy into another form of energy. Ultrasonic transducer is an energy conversion device that converts alternating electrical signals into acoustic signals through piezoelectric ceramic power amplifiers in the ultrasonic frequency, or converts external acoustic signals into electrical signals. Among them, the transducer used to emit sound waves is called a transmitter, and the transducer used to receive sound waves is called a receiver.

There are many types of ultrasonic transducers. According to the energy conversion mechanism and the difference of the energy conversion materials, they can be divided into piezoelectric ultrasonic transducers, magnetostrictive transducers, capacitive transducers and mechanical ultrasonic transducers. Wait. The two most common ones are magnetostrictive transducers and piezoelectric ultrasonic transducers. With the widespread application of piezoelectric ceramic materials, magnetostrictive transducers have been gradually replaced by piezoelectric ultrasonic transducers, except in some special fields.

Piezoelectric ceramic power amplifier drives piezoelectric ceramics:

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The piezoelectric ultrasonic transducer is designed based on the principle of the inverse piezoelectric effect of piezoelectric materials such as quartz, piezoelectric ceramics, piezoelectric composite materials, and piezoelectric films. In order to maximize the advantages of piezoelectric ultrasonic transducers, at present, piezoelectric ceramic materials are the most commonly used piezoelectric transducer materials. In most experiments of driving piezoelectric ceramic transducers, the piezoelectric ceramic power amplifier drives the transducer, which plays an important role in the process of converting electrical signals into acoustic signals.

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The piezoelectric ceramic drive power amplifier ATA-2021H series has a maximum differential output of 200Vp-p (±100Vp) high voltage, which can drive high-voltage loads. The voltage gain is digitally adjustable, one-key save settings, provides convenient and simple operation options, and can be used with mainstream signal generators to achieve perfect signal amplification.

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Input interface: standard BNC interface;

The input resistance is 50Ω and 5kΩ for two options, which perfectly match the high and low internal resistance signal sources.

The output is a banana socket, the maximum output voltage is 200Vp-p (±100V), and the output current is 500mA.

Monitor output interface: 1/100 Monitor: The voltage of this port is 1/100 of the output port, and the monitoring port is a BNC connector, which can be directly connected to the oscilloscope for real-time monitoring of the output voltage.

The fast response characteristics of piezoelectric ceramic power amplifiers are not only reflected in the bandwidth and slew rate, but also closely related to the maximum output current, voltage, and capacitance characteristics of the load. The main technical indicators for selecting a power amplifier are: voltage, current, power, bandwidth, slew rate, impedance, load, etc.

Through the above introduction, I believe you have a clear understanding of piezoelectric ceramic power amplifiers driving piezoelectric ultrasonic transducers. If you want to know more about piezoelectric ceramic power amplifiers, please continue to pay attention to the official website of Antai Electronics www. aigtek.com. The company is committed to the research of related industry test solutions with piezoelectric ceramic power amplifiers, measurement calibration products, wiring harness testers and other products as the core, and provides users with competitive test solutions. Aigtek has become an industry leader with a wide range of product lines, and A large-scale instrument and equipment supplier.

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