Crystal vibrator, I think only some people in the industry will know what this is. In fact, it is another name of quartz crystal oscillator, so quartz crystal oscillator can also be called crystal. Its composition is SiO2. It is not only a good optical material, but also an important piezoelectric material. The main feature of crystal is its structure and the regular arrangement of its atoms. Macroscopically, it is the symmetry of shape. The crystals seen in the market basically belong to artificial crystals, which are crystallized under high temperature and high pressure. Under the action of electric field effect, the internal structure of the crystal changes due to stress, resulting in mechanical vibration, and then obtain the required frequency. We use the piezoelectric effect of crystal to make quartz crystal resonator.

But what is the internal structure of quartz crystal resonator? In fact, it is very simple, that is, two electrodes are electroplated on both ends of a thin quartz wafer to become the internal structure of the quartz crystal oscillator. An interactive voltage is applied to the electrode to make the quartz wafer vibrate and set at a specific frequency. One of the characteristics is that this frequency is related to the thickness of the quartz wafer. Through the correct design of relevant parameters, we can make the quartz crystal resonator with the desired frequency.

The common quartz crystal resonators in the market are divided into SMD and dip. SMD crystal resonators are widely used in medium and high-end electronic products. In fact, quartz crystal resonators are classified into electronic components and play a pillar role in the whole electronic information industry. This has been introduced in the previous article, and it is described too much here. There are two kinds of electronic components, which are called quartz crystal resonator and quartz crystal oscillator. In comparison, quartz crystal oscillators are generally used in high-end electronic equipment, such as computers, networks, satellites, communication systems, base stations and so on, because of their high quality factor (known as "Q value" in the industry) and small frequency drift caused by temperature. Compared with other vibration components, they have accuracy and stability.

From the perspective of the use of electronic products worldwide, mobile phones, tablets, laptops, digital cameras, etc. these products have been developing in a sustained growth trend for many years. Especially for mobile phones, due to the R & D and addition of various functions, the updating speed of mobile phones has been greatly improved. From the initial call only to the later SMS, color screen, MMS, MP3, photography, Bluetooth, Internet access, 3G services, etc., the current mobile phone looks like defecation, from the previous brick mobile phone to the current pocket wrist, When a primary school student walks on the hook and carries this wrist phone on his wrist, at first, most people will think it is just a watch, which is the embodiment of the development of science and technology. With the upgrading of mobile phones, the number of quartz crystal oscillators used in each mobile phone is doubling. The development of 4G business has brought new life to the people in the electronic component industry; Secondly, in the field of vehicle electronics, the continuous innovation of car audio, positioning system, automatic air conditioning, safety sensing, GPRS navigation system and other functions, and the number of quartz crystals in each car is also increasing. In the future development of science and technology, quartz crystal oscillator, as the pillar of electronic information products, is also constantly updated. In the future, what is more needed is the support of quartz crystal oscillator with high precision and high stability