利用压电晶体的“压电效应”制作的电荷斩波器,具有体积小、重量轻、结构简单、安装方便和使用寿命长等优点,是电荷调制的理想器件。本文介绍的电荷斩波器实质上是采用压电陶瓷材料作换能器,利用压电技术制作的用于电荷斩波的压电音叉,实际上它又是利用机电换能器激励和拾取叉状振子固有机械振动的谐振器。就压电音叉而言,作为频率振荡元件和频率选频元件广泛地应用于工业控制、通信设备等领域中。随着科学技术的迅速发展,如何提高获取信息和处理信息的技术水平已成了一个很重要的研究课题,因此在信号检测和处理技术中,那些特殊形状的压电音叉就相继诞生了。近几年来,特别是在光电系统中得到广泛的应用。而作为电荷调制用的压 The use of piezoelectric crystal piezoelectric effect of the charge chopper, with small size, light weight, simple structure, easy installation and long life, etc., is the ideal device for charge modulation. In this paper, the charge chopper is essentially the use of piezoelectric ceramic material as a transducer, the use of piezoelectric technology for the charge chopper piezoelectric tuning fork, in fact, it is the use of electromechanical transducer excitation and picking fork Oscillator The inherent mechanical vibration of the resonator. As for the piezoelectric tuning fork, it is widely used as a frequency oscillation element and a frequency selection element in fields such as industrial control and communication equipment. With the rapid development of science and technology, how to improve the technical level of information acquisition and information processing has become a very important research topic. Therefore, in the signal detection and processing technology, the special shape of the piezoelectric tuning fork was born. In recent years, especially in the photovoltaic system has been widely used. But as a charge modulation pressure