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It is undoubtedly the goal of this product to have a PCB that can withstand any electrical, mechanical or structural adverse effects throughout its life expectancy. Circuit board construction process. These goals are equally divided between PCB manufacturing and PCB assembly. For manufacturing, the threat is cracking and breaking, while for assembly, the threat is […]

The analysis and design of power supply system (PDS) is becoming more and more important in the field of high-speed circuit design, especially in computer, semiconductor, communication, network and consumer electronics industries. With the inevitable further proportional reduction of VLSI technology, the supply voltage of integrated circuits will continue to decrease. As more and more […]

It is easy to form two basic parasitic elements that may cause problems in PCB design: parasitic capacitance and parasitic inductance. When designing a circuit board, placing two tracks close to each other will cause parasitic capacitance. You can do this: place one trace on top of another trace on two different floors; Or on […]

In electronic design, PCB is the physical carrier of our design content, and the final realization of all our design intentions is represented by PCB. Such PCB design is an indispensable link in any project. However, in the previous design, due to the low frequency, low density and large distance between devices, PCB design was […]

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 […]

First, the structure and types of metal-based copper clad laminate Metal-based copper clad laminate is generally composed of three parts: metal substrate, insulating dielectric layer and conductive layer (generally copper foil), that is, one or both surfaces of the treated metal substrate are covered with insulating dielectric layer and copper foil, which are compounded by […]

In the process of PCB design, some engineers don’t want to lay copper on the bottom of the surface layer in order to save time. Is this the right thing to do? Is it necessary to lay copper on the surface layer of PCB? First of all, we need to be clear: it is beneficial […]

In a grounded desktop product, when the ESD contact discharge test with a test voltage of 6KV was conducted at the grounding terminal, the system was reset. In the test, try to disconnect the grounding terminal from the Y capacitor connected to the internal digital working ground, but the test result has not improved significantly. […]

In the process of PCB outsourcing design, especially in high-frequency circuit design, some irregular and abnormal phenomena caused by ground wire interference are often encountered. In this paper, the causes of interference caused by ground wire are analyzed, three types of interference caused by ground wire are introduced in detail, and solutions are put forward […]

1 Why do you want to divide digital ground and analog ground? Although it is interlinked, it is different when the distance is long. The voltage at different points of the same wire may be different, especially when the current is large. Because there is resistance in the wire, the voltage drop will occur when […]