It is a good method to prepare etching solution with 30% hydrogen peroxide and industrial hydrochloric acid in the ratio of 1:3. However, the matters needing attention and methods in the production are not explained in detail. The following is a supplementary explanation based on practical experience. 1、 Matters needing attention ① In this method, [...]
As for the point of "through hole cover oil" and "through hole window" (the usage of via and pad is distinguished), many customers and design engineers often ask what this means when ordering on the system. Which option should I choose for my document? The following points are explained: There are often such problems. The [...]
The performance of cloud AI chip is relatively strong, and it can support a large number of operations to run together at the same time. In addition, it can also support a variety of different applications such as pictures and voice. In AI chip, the technology based on cloud AI chip can make a variety [...]
There are many types of manufacturing technology for ceramic products in circuit board factory. It is said that there are more than 30 manufacturing methods, such as dry pressing, grouting, extrusion, injection, casting and isostatic pressure. Because the electronic ceramic substrate is of "flat plate" type (block or round sheet) and its shape is not [...]
China is in a good situation of economic construction as the center and reform and opening up. The annual growth rate of electronic industry will exceed 20% % The printed circuit board industry is dependent on the whole electronic industry, which will also rise with the trend, and will exceed 20% % The growth rate [...]
1. What PCB back drill? In fact, back drilling is a special kind of depth control drilling. In the production of multi-layer boards, such as 12 layer boards, we need to connect the first layer to the ninth layer. Usually we drill through holes (once), and then use copper. In this way, the first floor [...]
Circuit board is the most active industry in the contemporary electronic component industry, and its growth rate is generally about 3% higher than that of the electronic component industry. From the perspective of development mode, China's circuit board industry continues to grow at a high speed, and its import and export have also completed a [...]
1. Brief introduction of capacitor Capacitance, also known as "capacitance", refers to the charge storage under a given potential difference. It is recorded as C, and the international unit is farad (f). Generally speaking, the charge will move under the force in the electric field. When there is a medium between the conductors, it will [...]
There are lots of resources to learn about electronic circuits, so where do you start? What do you need? In what order? If you don't know what you need to learn, it's a waste of time. Step 1: learn the closed circuit loop If you don't know what circuits need to work, how can you [...]
The nominal noise in an electronic circuit can be generally considered to be a general term for all signals other than the destination signal. At first people called the electronic signals that caused the noise of such sound equipment as radios. However, not all the effects of non-purpose electronic signals on electronic circuits are related [...]