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PCB design engineers may design odd-numbered printed circuit boards (PCBs). If wiring doesn’t need an extra layer, why use it? Won’t reducing layers make the circuit board thinner? If the circuit board is one less layer, isn’t the cost lower? However, in some cases, adding one floor will reduce the cost. There are two different […]

Multi-CPU parallel computer technology has greatly improved the computing speed of the system, breaking through the limit of single CPU processing speed. At the same time, the single-board computer design with multiple CPUs can reduce the volume of the computer system, the development cost and the development cycle of the system. 1. Hardware design of […]

1, PCB layout/wiring, the impact on electrical performance is often seen in books about electronics, saying “digital ground wire should be separated from analog ground wire”. Anyone who has laid the board knows that it is difficult in practice. To lay out a better board, first of all, you have to have an electrical understanding […]

At present, high-speed PCB design is widely used in communication, computer, graphics and image processing and other fields. In these fields, engineers use different high-speed PCB design strategies, which involve over-design strategies of simulation and analysis. In the field of telecommunications, the design is very complicated, and the transmission speed in data, voice and image […]

Impedance control is essential for high-speed circuit design to achieve the best transmission efficiency. Impedance calculation is related to factors such as plane, line width, dielectric thickness, dielectric constant, etc. In the calculation process, the values of each factor should be adjusted according to impedance requirements to find the best solution. This paper introduces the […]

Circuit board is in English, literally translated as “printed circuit board”, as well as circuit board, PCB, PCB, etc., which is an important part of electronic equipment in the modern technology era. The appearance of circuit board provides various functions for electronic products and realizes the integration of circuits. It mainly consists of pads, holes, […]

As HDI board adapts to the development of high integration IC and high density interconnection assembly technology, it pushes PCB manufacturing technology to a new level and becomes one of the biggest hot spots in PCB manufacturing technology!In all kinds of PCB cam production, the personnel engaged in cam production agree that HDI mobile phone […]

1, PCB painting outsourcing production requirements Clear requirements for plate thickness, copper thickness, welding resistance, character color, etc. The above requirements are the basis for making a board, so R&D engineers must write clearly. As far as the customers I have contacted are concerned, Gree has done a relatively good job, and the technical requirements […]

Ultra-thick copper multilayer PCB originated from North America, such as UPE Company in Canada. In the 1990s, the company began to develop and produce ultra-thick copper multilayer PCB, and achieved good results. This kind of special board product is applied to the components connected with strong current and mixed connection of strong and weak current. […]

EMI is caused by electromagnetic interference source transferring energy to sensitive system through coupling path. It includes three basic forms: conduction through wires or common ground wires, space radiation or near-field coupling. The harm of EMI is to reduce the quality of transmission signal, cause interference or even damage to the circuit or equipment, and […]