Public Account: Mr. High Speed Author: Wang Huidong Longlong, a PCB designer, is working hard and has a beautiful girlfriend named Lily. However, her mother is adamantly against their relationship. Despite this, her daughter is determined not to give up, ignoring her mother’s words, until her mother reluctantly agrees to give Longlong a probation period. … Read more
“ In the previous article (Why is Circuit Grounding Design Important on PCBA?), we discussed three factors that lead to common impedance coupling interference: the non-zero impedance characteristics of the common return path; multiple systems sharing a common return path; and the low noise tolerance exhibited by circuits due to their unbalanced characteristics. This article … 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
“ In the previous article (How to Control Common Impedance Interference on PCBA? – Reducing Common Impedance), we mainly discussed how to reduce interference from the perspective of lowering common impedance. However, in the design of PCBA, there are many limitations to reducing common impedance, such as the non-zero impedance characteristics of conductors. If we … Read more
Warm reminder: For friends who like the SMT Top Networking Circle public account, please note! According to the new regulations for public account push notifications, please set the SMT Top Networking Circle public account as “Starred” or “PinnedTop“, so that you can receive the valuable content we share every day! 2020 New Platform PCBA Circuit … Read more
This article will deeply compare PCBA and PCB! We will start with their basic definitions and principles, exploring the key differences in design, manufacturing, and practical applications. You will learn how PCBs are constructed and how they differ from fully assembled PCBAs. We will also explore real-world application cases across various industries, discuss manufacturing and … Read more
SMT, short for Surface Mount Technology, originated in the 1960s, involves directly mounting SMD components onto PCBs. Its greatest advantage is the high wiring density per unit area of each component, which shortens connection lines and improves electrical performance. Below, I will quickly guide you through the SMT process flow. (This is SMT) 01 SMT … Read more
From slash-and-burn agriculture to mechanized production, every transformation in agriculture has profoundly impacted human civilization. Today, amidst the wave of digitalization and intelligence, agriculture is ushering in unprecedented opportunities for transformation. Sensors have replaced the experience of traditional farmers, algorithms have optimized millennia-old farming practices, and behind this is a series of precision electronic hardware … Read more
The inverter circuit board is a core component of the inverter, responsible for controlling and regulating its operation. This article will provide a detailed introduction to various components on the inverter circuit board, including resistors, capacitors, inductors, diodes, transistors, IGBTs, optocouplers, and crystal oscillators. 1. Resistors Resistors are commonly used components on circuit boards, used … Read more
[PCB Information Network] The X circuit board factory has been operating at a loss for three consecutive months. Seeing the unfavorable trend, the owner decisively replaced the production director.A PCB industry leader once said, “We must seek efficiency through management!” They hired a management expert, hoping he could turn the situation around. The new production … Read more