When starting to learn PCB design, it is often emphasized by experts to separate strong electricity and weak electricity. So what exactly are these two types of “electricity” and how can they be distinguished? 1. What Are Strong and Weak Electricity? Strong Electricity: Definition: Refers to alternating current or direct current greater than 2V (usually … Read more
We often see the concept of teardrops, but many people express that they do not understand the meaning of this term and do not know how to add teardrops in PCB design. Please read on with this question in mind. Function of Teardrops ● Avoid the disconnection of contact points between wires and pads or … Read more
The significance of impedance for PCB circuit boards is crucial. Why is impedance necessary for PCB circuit boards? This article first introduces what impedance is and its types, then explains why PCB circuit boards need impedance, and finally elaborates on the importance of impedance for PCB circuit boards. Let’s follow along to learn more.01 What … Read more
Introduction to ARINC429 Bus >>>> Overview The ARINC429 bus protocol was established by the Aeronautical Radio, Inc. (ARINC) and is a specification for civil aircraft onboard data bus. The full name of ARINC429 is “Digital Information Transfer System”. The ARINC429 bus is a serial standard designed for unidirectional broadcast transmission. Only one transmitter is allowed … Read more
A backplane PCB is a special type of circuit board that is typically located at the back or bottom of electronic devices, used to support and connect various electronic components and subsystems. Unlike conventional PCBs, backplane PCBs have higher layers and complexity to accommodate a large number of connectors, slots, and other connection devices. They … Read more
In modern chips, billions of transistors are interconnected by metal lines to form complex circuits. As the manufacturing process enters the nanoscale, a seemingly “invisible” problem gradually comes to light:Capacitive coupling between metal lines. This coupling not only slows down signal transmission speeds but can also lead to data transmission errors. The key to solving … Read more
With the rapid development of electronic technology, DC power modules play an increasingly important role in various electronic devices. Optocouplers, as an important electronic component, are widely used in DC power modules for signal isolation and transmission. This article will explore the working principle, characteristics, and specific applications of optocouplers in DC power modules. 01 … Read more
Pengding Holdings has disclosed a flexible circuit board and its manufacturing method. The core innovation of this circuit board lies in the adoption of a unique dielectric structure, which uses air filled in a closed cavity as the primary medium surrounding the signal transmission lines. Compared to traditional dielectric materials, air has a lower dielectric … Read more
Choosing PLC Cables: Enhancing Signal Transmission Cable Technology and Interference Resistance! Introduction **Hello everyone!** Today we are going to discuss a seemingly ordinary but extremely important topic—the selection of PLC signal transmission cables.Don’t underestimate this cable, it is the “lifeline” for the stable operation of PLC systems! **Did you know?** In industrial sites, over 30% … Read more
Abstract in Chinese: During the testing process of fault injection at the system level of an aircraft using the 1553B bus, common engineering issues are often encountered, such as difficulties in ensuring the real-time transmission of signals during the 1553B injection process, challenges in obtaining or frequently changing bus interface protocols, and onboard software that … Read more