Summary: In PCB design, the quality of the layout for the duplexer often directly determines the overall RF performance of the device. Many engineers focus more on the positions of major components such as antennas, PA, and LNA, while neglecting the details of the duplexer, which serves as an important intermediate link. In fact, the … Read more
The MIPI (Mobile Industry Processor Interface) interface, especially its physical layers D-PHY and C-PHY, is widely used in high-speed data transmission scenarios such as cameras (CSI-2) and displays (DSI-2). The PCB layout and routing of MIPI are crucial for signal integrity, directly affecting the performance and reliability of devices. Below are key guidelines for MIPI … Read more
Analysis and Solutions for Interference Issues in PLC Distribution Cabinets The interference issues within PLC distribution cabinets mainly stem from electromagnetic interference, poor grounding, power fluctuations, and improper cable layout, which can lead to PLC malfunctions, data anomalies, and even system failures. Solutions should focus on suppressing interference sources, blocking transmission paths, and protecting sensitive … Read more
There are two types of power supplies for PLC systems: external power supply and internal power supply.The external power supply is used to drive PLC output devices (loads) and provide input signals, also known as user power supply. The external power supply for the same PLC may have multiple specifications. The capacity and performance of … Read more
Before reading this article, you can click on the blue text above“Power Forum”, and after “following”, you can star or pin the public account so that you can receive the highest quality articles and the latest materials in a timely manner. 01 Pay Attention to Power Supply Installation There are two types of power supplies … Read more
How to Connect the Chassis to the Circuit Board Ground?The chassis is made of metal, and there is a screw hole in the middle, which connects to the ground. Here, a 1M resistor is connected in parallel with a 0.1uF capacitor to connect to the circuit board ground. What are the benefits of this?1. If … Read more
Hello everyone, I am Lao Liu. After more than twenty years in automation, PLC programming is second nature to me; however, when it comes to wiring control cabinets, I must say there are quite a few pitfalls. Today, let’s have an honest discussion about the wiring of control cabinets, sharing the pitfalls I’ve encountered and … Read more
What is the purpose of grounding an oscilloscope? Grounding serves as the reference point for all voltage measurements, ensuring that there is a known 0V voltage point in the circuit. This is crucial for ensuring measurement accuracy, suppressing noise interference, and ensuring measurement safety. It can be observed that the power cord of a desktop … Read more
In the design and manufacturing process of electronic devices, if a design is encountered where the circuit board ground is directly connected to the chassis ground, will this design cause problems? This article will explore this issue, hoping to provide assistance to our readers. 1. Electrical Safety Issues The direct connection may lead to a … Read more
“Grounding is considered a solution to many EMI issues. However, when grounding is done improperly, the chosen grounding scheme can become part of the problem. This article illustrates the issue of grounding coupling interference through simple examples.” 01 — Common Impedance Coupling According to Ampere’s law (the theoretical cornerstone of EMC grounding concepts – Maxwell’s … Read more