1.Layout of Devices In the process of PCB design, from the perspective of EMC, three main factors should be considered first: the number of input/output pins, device density and power consumption. A practical rule is that the area occupied by sheet components is 20% of the substrate, and the power dissipation per square inch is…
Heat dissipation is a common and important problem in modern high-performance electronic devices. Proper handling of heat dissipation is essential to ensure the reliability, stability and life of electronic devices. The following will introduce methods and techniques for dealing with heat dissipation during PCB design to help you improve design quality and performance. First of…
High speed design is often overlooked or quite important. System board layout has become a major part of the design itself, so we must understand the mechanisms that affect the performance of high speed signal chain designs. As engineers, we are also likely to “make” more trouble. Therefore, it is important not to be too…
With the popularity of electric vehicles, the battery management system (BMS) plays a vital role in the performance, safety and life of electric vehicles. BMS is responsible for monitoring the status of the battery, controlling the charging and discharging process, managing the battery temperature, and preventing overcharging and over-discharging to ensure the best battery performance,…
1.Basic principles of desoldering: Before desoldering, you must understand the characteristics of the original soldering point and do not do it lightly. (1) Do not damage the components, wires and surrounding components to be removed; (2) Do not damage the pads and printed wires on the PCB during desoldering; (3) For electronic components that have…
PCBs are the heart of almost all electronic products, carrying the components and copper wires that enable their functions. Electroplating is often included in the manufacturing process, and electroplating varies from design to design. This forces simulation and optimization engineers to constantly create new models. What if most of this work could be handed over…
PCB Best Practices: Six Things to Consider When Transferring PCB Schematics to Layout Design. All examples mentioned in this article were developed using the Multisim design environment, but the same concepts apply when using different EDA tools. Initial Schematic Transfer The process of transferring the schematic to the layout environment through the netlist file also…
5.Inspection, testing and board separation of FPC: Since the carrier board absorbs heat in the furnace, especially the aluminum carrier board, the temperature is high when it comes out of the furnace, so it is best to add a forced cooling fan at the furnace outlet to help cool down quickly. At the same time,…
PCB (Printed Circuit Board), Chinese name is printed circuit board, also known as printed circuit board, printed circuit board, is an important electronic component, a support for electronic components, and a provider of electrical connections for electronic components. PCB has been the mainstay of the electronics industry since humans first connected carbon sheets and silicon…
Printed circuit boards (PCBs) are easy to manufacture, reliable in performance, and cheap, so they are widely used in various electronic devices. In recent years, with the development of electronic technology, the clock rate in microprocessors and logic circuits on printed circuit boards has become faster and faster, and the rise/fall time of signals has…
Ground interference and the influence of PCB routing are important and complex issues in circuit design. The following is a detailed analysis and summary of these two issues: I feel that the requirements for audio are a little higher, so I will share it here and talk about audio later: 1.Ground interference Ground interference refers…
The number of layers of PCB (printed circuit board) has many effects on its performance, mainly including the following points: Signal integrity: Multilayer PCBs can provide better signal integrity, especially in high-frequency applications. Through reasonable stacking design, signal interference and crosstalk can be reduced, and signal clarity and stability can be improved. Power and ground…
Offline programming refers to the work of compiling SMT placement programs on a computer using offline programming software and PCB CAD design files. Offline programming can save online programming time, thereby reducing the downtime of the entire PCBA processing and improving the utilization rate of equipment. Offline programming software Generally consists of two parts: CAD…
Altium’s PCB tool is used to convert schematics into PCBs. a. Signal Layers: Signal layers include Top Layer, Bottom Layer, Mid Layer 1…30. These layers are all layers with electrical connections, that is, actual copper layers. The middle layer refers to the middle board layer used for wiring, and the wires are laid in this…
1.Key points of EMC circuit filter design: L1 is a common-mode inductor, which can attenuate common-mode interference, suppress interference inside the board and external interference, improve the product’s anti-interference ability, and reduce external radiation through the 429 signal line. The common-mode inductor impedance selection range is 120Ω/100MHz ~2200Ω/100MHz, and the typical value is 1000Ω/100MHz; C1…
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