Question: In PCB routing, there are three common types of bends: right angle, 45 degrees, and arc (as shown in the figure below). Which type of bend is the best? This question can be answered relatively easily based on experience, with most people agreeing that arc > double 45 degrees > right angle. However, empirical … Read more
Introduction:Everyone knows that impedance should be continuous. However, as Luo Yonghao said, “In life, there are always times when you step in something unpleasant,” PCB design also has its moments of impedance discontinuity. What should we do? Characteristic Impedance Characteristic Impedance: Also known as “Feature Impedance”, it is not a DC resistance, but a concept … Read more
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In fact, whether something is simple or complex is not important; what matters is what we can learn through STM32. Creating a keyboard/mouse allows us to learn the USB protocol. Building a networked device requires understanding the underlying implementation of Ethernet and TCP/IP protocols. For a wireless device, one might need to learn Bluetooth, Wi-Fi, … Read more
In fields such as industrial automation and remote monitoring, many are familiar with RS485 hubs. However, RS485 has several issues, such as data return delays and insufficient security. How can engineers leverage strengths and mitigate weaknesses to minimize these impacts?! 1. What Issues Exist with RS485 Hubs? Data return delay: The host can send data … Read more
Printed Circuit Board Advanced PCB Design Advanced design of Printed Circuit Boards (PCBs) requires a combination of engineering practice, signal integrity analysis, electromagnetic compatibility (EMC) design, and manufacturing processes. The following are the core points and practical tips for advanced design to help you enhance the professionalism and reliability of PCB design. 1.High-Speed Signal and … Read more
Click the blue text to follow us Introduction There are various types of wireless Bluetooth headsets on the market, which offer excellent sound quality and convenient control features. Wireless Bluetooth headsets not only free our hands but also allow us to enjoy calls and music more freely. The sales of wired headsets are gradually declining, … Read more
In the field of PCB design, electronic engineers need to create reasonable routing layouts to enhance circuit performance and stability. However, many beginners lack experience and are prone to making mistakes in routing. Therefore, this article will share ten routing rules to help you avoid interference pitfalls and create better circuit boards! 1. Area Isolation: … Read more
When designing PCBs, there are many small details to pay attention to. Let’s see if you are a detail-oriented person. 1. When calculating the routing length, include the length of the vias and pads that the signal passes through. 2. During routing, avoid right angles and sharp angles that can cause signal reflections. Preferably use … Read more
Abstract: The layout of switch power supply PCBs is an important process in the development of power products. In many cases, a power supply that is perfectly designed on paper may not work properly during initial debugging due to various issues in the PCB layout. This article discusses the basic points of switch power supply … Read more