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Quartz crystal resonators are mainly functional materials

Source: Time:2020-08-07 11:19:39 views:

Quartz crystal oscillator, short for quartz crystal resonator, is the core product of quartz crystal components. It is a resonant device made by using the principle that the resonance phenomenon is caused by piezoelectric effect
Quartz crystal oscillator, short for quartz crystal resonator, is the core product of quartz crystal components. It is a resonant device made by using the principle that the resonance phenomenon is caused by piezoelectric effect when the frequency of electrical signal is equal to the inherent mechanical resonance frequency of quartz crystal chip. Crystal oscillator is a kind of crystal that can convert electrical and mechanical energy to each other in the resonant state to provide a stable and accurate single-frequency oscillator, is the core of the time element and frequency element.

The main functional material of quartz crystal components is silicon dioxide (SiO2) crystal, whose morphology is regular, crystal clear and transparent, so it is also known as "crystal". Crystal has stable physical and chemical properties, it is not only a better optical material, but also a better piezoelectric material. The crystal material deforms under the action of external pressure and generates electric polarization. The polarization intensity is proportional to the pressure. This characteristic is called "normal piezoelectric effect". On the contrary, when the electric field is applied to the crystal material, deformation will occur, and the size of the deformation is proportional to the intensity of the electric field. This characteristic is called "inverse piezoelectric effect". The existence of this effect causes the crystal material to generate stress and deformation under the action of the electric field, thus generating mechanical vibration and obtaining a specific frequency.

The main frequency range of low-frequency crystal resonators is KHz, also known as tuning fork crystal resonators because of its crystal material using tuning fork shape cutting process. The main frequency range of high frequency crystal resonator is MHz-GHZ.

Quartz crystal oscillator - the most widely used time and frequency element

Since the 1960s and 1970s, with the rapid development of electronic technology in the world, the world quartz crystal resonator market has ushered in a sustained and rapid growth. As a standard frequency source or pulse signal source, quartz crystal resonator provides high accuracy frequency benchmark, gradually by high-end military electronic equipment applied to the broad field of civil electronic products, widely used in consumer electronics, small electronic products, information equipment, mobile terminals, network equipment and automotive and other fields, become the basic components of the electronic industry. Based on its excellent characteristics and low cost advantages, quartz crystal resonator in the future for a long period of time is difficult to replace other components. In Japan, quartz crystal resonators are known as the "salt of industry".

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