Switched mode power supply electromagnetic compatibility technology
Electromagnetic compatibility is an emerging interdisciplinary and comprehensive applied discipline. As a fringe technology, it is based on the basic theory of electrical and radio technology and involves many new technical fields, such as microwave technology, microelectronics technology, computer technology, communication and network technology and new materials. EMC technology has a wide range of applications, and almost all modern industrial fields, such as electric power, communication, transport, aerospace, military industry, computers and medical care, must solve the EMC problem. The hot content of its research mainly includes: the characteristics of electromagnetic interference sources and their transmission characteristics, the harmful effects of electromagnetic interference, electromagnetic interference suppression technology, the use and management of electromagnetic spectrum, electromagnetic compatibility standards and norms, electromagnetic compatibility measurement and test technology, electromagnetic leakage and electrostatic discharge.
The English name of electromagnetic compatibility is Electromagnetic Compatibility, abbreviated as EMC. The so-called electromagnetic compatibility refers to the co-existence of equipment (sub-systems, systems) that can perform their respective functions together in a common electromagnetic environment. Here contains two layers of meaning, that is, it works in the electromagnetic radiation should be limited to a certain level, in addition to its own anti-jamming ability. This is the development of equipment must solve the compatibility problem. Electromagnetic compatibility technology involves a wide range of frequencies up to 0 GHz "400GHz, the research object in addition to traditional equipment, but also involves the chip level, up to a variety of ships, space shuttles, intercontinental missiles, and even the entire earth's electromagnetic environment.
The three elements of electromagnetic compatibility are the source of interference (nuisance source), the coupling path and the sensitive body. Cut off any one of the above can solve the electromagnetic compatibility problem, electromagnetic compatibility solution commonly used methods are mainly shielding, grounding and filtering.
