unit v.pptx
- 1. EC8072 ELECTROMAGNETIC INTERFERENCE AND COMPATIBILITY UNIT-V PREPARED BY R.PONNI ,AP/ECE
- 2. Civilian standards - CISPR, FCC, IEC, EN • NEED FOR EMC STANDARDS • The EMC standards are required for trouble free co- existence and to ensure satisfactory operation. • They are also required to provide compatibility between electrical, electronic, computer, control and other systems. • Standards are required as manufacturer-user interaction and user’s knowledge on EMI are limited. • They are also required for establishing harmonized standards to reduce international trade barriers and to improve product reliability and life of the product.
- 3. Civilian standards - CISPR, FCC, IEC, EN • EMC STANDARDS: These are of two types Military Standards : Military EMC standards are made in order to ensure system-to-system compatibility in the real time military environment. Military standards are more stringent than civilian standards. Most of the military standards are broadly based on MIL-STD 461 and 462. Civilian Standards: The civilian EMC standards are applicable for equipments used for commercial, industrial and domestic applications. The emission standards are specified to protect the broadcast services from interference..
- 4. Civilian standards - CISPR, FCC, IEC, EN • ADVANTAGES OF EMC STANDARDS • The advantages are: • Compatibility, reliability and maintainability are increased. • Design safety margin is provided. • The equipment operates in EMI scenario satisfactorily. • Product life and profits are increased.
- 6. • Other Military Standards The most important of the military standards in EMI/EMC area are the MIL-STD-461 and MIL-STD-462. As stated elsewhere, many key developments in the EMI/EMC area during the past 50 years carne about as a result of the thrust given by the military for this subject area. This interest of the military also resulted in the development of many other military standards in which EMI/EMC is an important element. These include