The International Electrotechnical Commission (IEC) is the earliest international electrical standardization organization in the world that founded in 1906. It is responsible for international standardization in the field of electrical engineering and electronic engineering. The authoritative of IEC standards are recognized universally.
CISPR is a subordinate body of IEC, but it’s more independent than TC. It is a special organization set up to study, protect broadcast reception, communication and other interference to other electrical equipment. CISPR is one of the important international organizations in EMC standards.
IEEE( Institute of Electrical and Electronics Engineers) is an American association of electronic technology and information science engineers and it’s the largest non-profit professional technology society in the world. IEEE is committed to the development and research of electrical, electronic, computer engineering and science-related fields. It has developed more than 900 industry standards in the fields of aerospace, information technology, electricity and consumer electronics.