石英晶振的原理与电路组成设计

石英晶振是一种高精度、高稳定度的振荡器,是利用石英晶体的压电效应而制成的谐振组件,以取代LC选频电路,频率稳定度高达10-9-10-11,广泛应用于各类电子产品的振荡电路中,如通信系统中的频率发生器等。作用:为数据处理设备产生时钟信号,提供系统振荡脉冲,稳定频率,选择频率。本文将对石英晶振的基本特性、稳频条件、及电路设计方面做简单介绍。

Quartz Crystal is a kind of oscillator with high- accuracy and high- stability, Which can be used to replace the resonant device of LC frequency selection circuit. The frequency stability of QC can reach to 10-9-10-11, so it can be widely used in oscillatory circuit of various electronics products, such as frequency generator of communication system. Role： Generator of clock signal for data-processing equipment, Provider of impulse oscillation system, stabilized frequency and frequency selection. This article will give an outline of the basic characteristics, frequency stabilization conditions and circuit design of Quartz Crys tal.