Author: Grace

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Protel package library conversion to allegro package library
ByGrace January 16, 2025January 15, 2025
Using Protel for PCB design for a long time, we will always accumulate a large number of Protel package libraries that have been proven in practice. When the design platform is converted, how to retain this package library is always a headache. Here, we will use Orcad Layout and Layout2allegro to complete this work. The…
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A brief discussion on EMI solutions in multi-layer PCB design
ByGrace January 16, 2025January 15, 2025
There are many ways to solve the EMI problem. Modern EMI suppression methods include: using EMI suppression coatings, selecting appropriate EMI suppression components and EMI simulation design, etc. This article starts with the most basic PCB layout and discusses the role and design techniques of PCB layering and stacking in controlling EMI radiation. Power bus…
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Four basic characteristics of PCB RF circuit
ByGrace January 16, 2025January 15, 2025
This article interprets the four basic characteristics of RF circuit from four aspects: RF interface, small desired signal, large interference signal, and interference from adjacent channels, and gives important factors that need special attention in the PCB design process. 1.RF interface of RF circuit simulation Conceptually, wireless transmitters and receivers can be divided into two…
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Design experience: Grounding methods in multi-layer PCBs
ByGrace January 16, 2025January 15, 2025
According to the rule of thumb, four-layer boards are usually used in high-density and high-frequency situations, which are more than 20 DB better than two-layer boards in terms of EMC. Under the condition of a four-layer board, a complete ground plane and a complete power plane can often be used. Under this condition, it is…
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Top 10 Tips to Improve IP Verification Efficiency
ByGrace January 16, 2025January 15, 2025
Functional verification is becoming a bottleneck in IP verification and affects the entire design team. Design engineers seek ways to improve verification efficiency to achieve the best benefits for the entire chip design. Here, we provide 10 simple tips to significantly improve your IP verification efficiency. 1.Participate in verification plan review Well begun is half…
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How to deal with electromagnetic interference problems on PCB boards
ByGrace January 16, 2025January 15, 2025
Some people say that there are only two types of electronic engineers in the world: those who have experienced electromagnetic interference and those who have not. With the increase in the speed of PCB routing, electromagnetic compatibility design is an issue that we electronic engineers have to consider. When facing a design, when conducting an…
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Analysis of the key points of PCB design
ByGrace January 16, 2025January 15, 2025
In today’s society, a large number of electronic products are widely used in our daily work and life, so their reliability needs to be guaranteed, and most electronic systems and equipment that use printed circuit boards must have reasonable design schematics and correct printed circuit boards to fundamentally improve their reliability. For example: assuming that…
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Six Things to Consider When Selecting PCB Components Based on Package
ByGrace January 16, 2025January 15, 2025
1.Consider Component Package Selection Throughout the schematic drawing phase, you should consider the component package and land pattern decisions that need to be made at the layout stage. Here are some suggestions to consider when selecting components based on their package. Remember that the package includes the electrical pad connections and mechanical dimensions (x, y,…
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Summarizing the experience of printed circuit board design
ByGrace January 16, 2025January 15, 2025
As an electronic engineer, printed circuit boards are a must-have for electronic engineers to do electronic design. I believe that everyone has encountered some confusion and problems in electronic design at work. Here I summarize some design methods in the process of printed circuit boards, hoping to give you answers. 1.The size of printed circuit…
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How to make your PCB design better
ByGrace January 16, 2025January 15, 2025
Many people think that PCB layout work is very boring. Every day, facing thousands of lines on the board, various packages, and repeating the work of pulling wires. However, designers have to make trade-offs between various design rules, taking into account performance, cost, process and other aspects, and paying attention to the reasonable and neat…
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Wet process and PCB surface treatment
ByGrace January 16, 2025January 15, 2025
1.Abrasives Abrasives, brush materials The various materials used for brushing the copper surface before cleaning the board surface, such as polymer non-woven fabrics, or non-woven fabrics mixed with corundum, or various types of free materials of its sand materials, and pumice slurry, are all called abrasives. However, the powder of this kind of brush material…
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How to choose materials for making PCB test fixtures
ByGrace January 16, 2025January 15, 2025
The production of fixtures should select appropriate materials according to the actual situation, which can greatly reduce costs. At the same time, a universal and reusable base can also greatly reduce costs, and standardize the production of fixtures to facilitate production and improve the quality of fixtures. The selection of test needles and related materials…
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High-speed FPGA-based PCB design technology
ByGrace January 16, 2025January 15, 2025
It would be wonderful if high-speed PCB design could be as simple as connecting schematic nodes and as beautiful as what you see on a computer monitor. However, unless the designer is new to PCB design or is extremely lucky, actual PCB design is usually not as easy as the circuit design they are engaged…
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Circuit board reliability and micro-sectioning
ByGrace January 16, 2025January 15, 2025
1.Abrasion Resistance In circuit board engineering, it often refers to the wear resistance of solder-proof green paint. The test method is to use a 1 kg soft grinding wheel to rotate and rub 50 times on the IP-B-25 sample board that has been painted green. The comb-shaped circuit area must not be worn out to…
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The summarize of high precision technology print PCB
ByGrace January 16, 2025January 15, 2025
High-precision printed circuits refer to the use of fine line width/spacing, micro-holes, narrow ring width (or no ring width) and buried and blind vias to achieve high density. High precision means “fine, small, narrow, thin”, which will inevitably lead to high precision requirements. Take line width as an example: 0.20mm line width, according to regulations,…
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