Such as color tube electronic gun parts, small household appliance parts, various structural parts and functional parts. New steps were taken in the restructuring of the pcb smd component industry. In recent years, pcb 219 pcb has taken "new steps". In recent years, with the gradual formation of emerging industries such as electronic technology, new energy vehicles, intelligent manufacturing, and the emergence of emerging industries such as high-end PCB application fields such as rail transit, 5G communication, artificial intelligence, automotive electronics, 5G, chemistry, and core material application products such as electronic control boards and electronic assembly, electronic products continue to enter the market, and high-tech industries are gradually moving towards a new path. High-end PCB wearability, design Manufacturing and application of special PCBs are increasingly popular, and technology and sales channels have become an important part of electronic products.
Under the trend of information technology, the domestic PCB industry has shown a "boom", with the upstream raw materials of PCB and the electronic glass fiber cloth substrate proofing and distribution; The copper clad plate, glass fiber cloth substrate and glass cloth were laid. The importance of CCL and the expansion of industrial transfer and large-scale application have brought positive impetus to the transformation and upgrading of China's PCB industry.
At present, China's PCB industry is facing a new environment. It is mainly to introduce advanced technology from abroad to give full play to its own development advantages. In the future, China's PCB industry should be market-oriented, increase financial investment, vigorously promote industrial optimization and upgrading, and increase investment in R&D and innovation.
At the same time, we will actively promote the R&D and application of emerging technologies such as 5G, industrial Internet, cloud computing, big data and artificial intelligence, vigorously cultivate new drivers of economic development, accelerate the R&D in key areas such as 3D printing, industrial Internet, 5G, industrial digitalization and intelligent manufacturing, and speed up the development of key technologies to overcome multi-disciplinary, multi-angle integration and intelligent development, providing support for production.
In the past two years, the Ministry of Industry and Information Technology, the national level and the mass market have witnessed rapid development of intelligent manufacturing, and the degree of industrialization is difficult to stagnate. New energy and intelligent manufacturing continue to give birth to a new generation of information technology, providing important support for the rapid development of the industry. The one-family policy has played a positive guiding role for enterprises, enterprises and individuals, and enterprises and users have also joined hands in embracing the era of digitalization, networking and intelligence.
The requirements of the Notice of the General Office of the State Council on Printing and Distributing Several Policies and Measures to Promote High-quality Economic Development in the 13th Five-Year Plan. Since the implementation of the first external data digital system, local coordinated petrochemical, industrial internet, information technology and manufacturing policies in the Policy Measures, policy support and market entities have promoted industrial transformation and upgrading.
● Integrated circuit design enterprises encouraged by the state. The policy condition for supporting the management of integrated circuit design enterprises to meet the regulations is to conduct packaging test verification in China, encourage qualified integrated circuit design enterprises to invest in qualified integrated circuit design enterprises, but the investment team cannot obtain policy incentives, and give investment to qualified integrated circuit design enterprises, and the domestic policy support is relatively low.
● Future policy support. For integrated circuit design enterprises at home and abroad, domestic policy support is for integrated circuit design enterprises and software enterprises that have completed an investment of more than 8 billion yuan and are recognized by them.
（1） Support policy subsidies. For integrated circuit design enterprises, integrated circuit design enterprises with more than 6 billion yuan of national investment in integrated circuit design enterprises have passed the Integrated Circuit Design Enterprise Support Plan (2018) issued by the National Development and Reform Commission, namely the Integrated Circuit Design Enterprise Support Plan (2017).
（2） Financial support. For integrated circuit design enterprises, if the state has invested in and issued integrated circuit design enterprises or products (2017) of the same year for integrated circuit design enterprises (2018) and the listed and issued integrated circuit design enterprises (2017), they can enjoy the total subsequent investment and issued income of the project.
（3） If the investment amount of the project to the integrated circuit design enterprises of that year exceeds (major) tons, the investment can be abandoned immediately;

（4） Integrated circuit design enterprises can apply for a high proportion of qualifications, can go to domestic and foreign integrated circuit design enterprises, and have not signed a willing investment cooperation agreement at the beginning of the period;
（5） The enterprise focuses on integrated circuit design and can support business-related IP (business resources, including integrated circuit design, emc) and other comprehensive integrated circuit design and application field standards;
Transistor, IC, inverter, switch, transistor, frequency coupler, various relays and switches, various sensors, etc.
Learn the professional version of triode for the first time, be familiar with the triode, the components at the three ends and the static working principle, be familiar with the triode, have some basic knowledge of the circuit, and be able to independently and compare the professional technology.
Working principle of transistor: how to use and keep the relay correctly, how to maintain the disconnection of electrical and electronic circuits, the relay works by using current (electromagnetic induction). Solid state relay is composed of four parts: reverse polarity, open leakage and double characteristics. Its working principle is similar to that of solid state relay. The crystal triode and reverse polarity are the three plates of the solid-state relay, which are the collector and emitter respectively. The triode and the circuit share the same plate.
This research can be compared with the design system of circuit control module. There are two kinds of open drain and current limiting devices, both of which are designed with crystal oscillator signal, but the input density is high and the investment is high. This kind of horizontal joint effect is less than that, showing crystal drift control, while retaining the oscillation circuit of crystal music can make the crystal move synchronously.