GB/T 9254.1-2021　　On June 1, 2022, the TC10 expert group of the National Certification and Accreditation Administration released the "Technical Resolution on the Implementation Method of Certification for the Version Upgrade of GB/T 9254.1-2021 Standard"GB/T17743-2021On May ...

　　The new EU Machinery Directive 2006/42/EC came into effect on December 29, 2009, and the old Machinery Directive 98/37/EC was abolished. Any machinery that meets the definition of the Machinery Directive must fulfill all the requirements of the directive in order to be abl...

On April 27, 2022, the China Quality Certification Center released the revised version of the "CQC11-464112-2015 Safety Certification Rules for Secondary Batteries and Battery Packs for Portable/Fixed Electronic Devices". The main changes are as follows: 1. Added the lithium batt...

　　Throughout the entire semiconductor manufacturing process, particle contamination; electrostatic discharge damage, and the associated equipment downtime are the three major problems caused by static electricity. Therefore, static control must be implemented. The Internatio...

EMC has many testing projects. Among them, the ESD simulation test has a significant peculiarity. That is, apart from the fixed test bench, all other test procedures are completed by manual operation. Therefore, it can be said that in the ESD simulation test, human error operatio...

When it comes to the rectification of EMC, we often refer to the three elements of EMC, namely the source of interference, the path of interference, and the interfered component.　　The interference source can often be identified through near-field probes and the elimination met...

　　I. What is static electricity?　　Static electricity refers to the electric charges that are relatively stationary or changing slowly for the observer. Static electricity is an electrical energy that exists on the surface of objects; it is the result of the imbalance of po...

　　The presence of live neutral wires poses the following hazards:　　(1) When the neutral line is disconnected, due to the asymmetry of the load, the neutral point will drift. The voltage of the light-load phase will rise. If it exceeds the rated voltage of the electrical equ...