Views:0 Author:Site Editor Publish Time: 2020-06-30 Origin:Site
High voltage power amplifier
Introduction of piezoelectric ceramics:
Piezoelectric ceramic is a pzt ceramic material that can convert mechanical energy and electrical energy to each other. In addition to piezoelectricity, piezoelectric ceramics also have dielectric properties, elasticity, etc., which have been widely used in medical imaging, acoustic sensors, underwater acoustic transducers, ultrasonic motors, etc. Piezoelectric ceramics use its material under the action of mechanical stress to cause the relative displacement of the internal positive and negative charge centers to polarize, which results in the binding effect of opposite signs on both ends of the material, that is the piezoelectric effect. piezoelectric disc transducer is mainly used to manufacture ultrasonic transducers, underwater acoustic transducers, electroacoustic transducers, ceramic filters, ceramic transformers, ceramic discriminators, high voltage generators, infrared detectors, surface acoustic wave devices, electro-optics devices, ignition and detonation devices, piezoelectric gyros, etc.
Application of optical system and precision tracking and targeting system:
In the adaptive optical system and precision tracking and targeting system, as the key components of wavefront correction and fast precision tracking-the deformable mirror (DM) and the high-speed tilting mirror (TM) form a multi-loop composite control with the traditional tracking and pointing system The system greatly improves its system tracking accuracy (up to 1μrad), and the system tracking bandwidth ranges from several Hz to tens of Hz.
The current drivers for deformable mirrors and tilt mirrors are developed using special processes by using the inverse piezoelectric effect of piezoelectric ceramic (PZT) materials piezo ceramics rings. In order for the driver to produce the required amount of displacement, a control voltage of up to 1500Vpp must be applied to the positive and negative poles of the PZT. The frequency of the control voltage changes to hundreds of Hz, which requires a high-voltage drive amplifier suitable for it. The larger the tracking range and the higher tracking accuracy and speed required in the system, the higher the high-voltage amplifier's output voltage, wide bandwidth, and low noise, ripple, and drift under large capacitive load. When is designing high-voltage amplifiers, it is quite difficult to meet these requirements simultaneously. The high-voltage amplifier can fully meet the application requirements. The output voltage is up to 1600Vpp, the output current is up to 40mA, and the bandwidth (-3dB) reaches DC-150KHz. In the current adaptive optics and tracking system test can fully meet the requirements. Its voltage, bandwidth and output current provide technical guarantee for the development of adaptive optics and tracking systems.
High-voltage amplifiers can output ideal single-ended and differential signals, piezoelectric transducer amplifier is providing a quick tool for research in the field of piezoelectric ceramics. At the same time, this series of power amplifiers provides a perfect impedance matching network for the better application of MEMS testing customers, which is convenient for users to choose the corresponding matching impedance. The gain of the high-voltage amplifier is numerically adjustable, and the signal is accurately amplified by 0.1 steps, which is convenient for user debugging. At the same time, it has a 100:1 signal monitoring port, which is convenient for users to observe the change of output waveform in real time. Using LCD display, the operation is simple and easy to understand.