1. Introduction to crystal oscillator
　　Crystal oscillator is a high-precision and high-stability oscillator. It is widely used in various types of oscillation circuits such as color TVs, computers, remote controls, and communication systems for frequency generators and clock signals for data processing equipment. And provide a reference signal for a specific system.
　　Quartz crystal oscillator is a kind of resonant device made by using the piezoelectric effect of quartz crystal (crystal of silicon dioxide). Its basic structure is roughly as follows: a slice (referred to as a wafer for short) is cut from a piece of quartz crystal at a certain azimuth angle. It can be square, rectangular or round, etc.), silver layers are coated on its two corresponding surfaces as electrodes, each electrode is welded with a lead wire to the pin, and a package shell is added. Quartz crystal resonator, referred to as quartz crystal or crystal, crystal oscillator for short. Its products are generally packaged in metal shells, but also in glass, ceramic or plastic packages.
　　2. What is the function of the crystal oscillator?
　　The crystal oscillator actually belongs to a lead cut from a quartz crystal. It has a very significant function, that is, mechanical vibration can occur when the power is turned on.
　　When we understand crystal oscillators, we need to compare them based on their materials and properties. For electromechanical equipment, electromechanical effects often appear during operation. What is the function of the crystal oscillator? You can also analyze according to important characteristics, such as its thermal expansion coefficient, the chemical properties of quartz crystals, etc., which directly affect the size and stability of the mechanical force, let's take a look at its application range!
　　1. The play of electromechanical effect For electromechanical effect, we can understand it as the transformation of electromechanical. In fact, in the process of transformation, inductance and capacitance can build some resonant circuits, which can promote the mutual conversion of electric field and magnetic field. For most circuits, some resonant circuits can generally appear to ensure that the power consumption of the quartz crystal is reduced and the Q value is increased.
　　2. Using its function as an oscillator can produce extremely robust oscillations, then it can play the role of a filter, so when operating, it has an extremely robust band-pass curve, because it belongs to a quartz crystal, so in The circuit also belongs to a very key component element, of course, it can also play the most direct decisive role for the reference frequency it provides.
　　3. It is equivalent to a frequency scale. We know that the quality of a crystal oscillator can be estimated by the size of the frequency deviation. This is a very important technical indicator, but in the process of operation, it also involves the specific application range. Generally speaking, its clock source is divided into two major types. When we understand it, we generally need to configure it according to different types of oscillators. Under certain conditions, it can be used as an oscillator to ensure that the module avoids shocks and ensures the stability of stop shocks. Moreover, in a normal temperature environment, electrical components will not have selective interference, so the selection of components and the configuration of lines can also be more reasonable and standardized.