Monday, February 27, 2012

History of the ANSI standard

Standardization in the United States started in 1919, if the US National Bureau of Standards appear recommended analysis procedures and accepted ambit of cells.6 American standards were revised several times during the afterward decades, as new sizes of beef were alien and new allure developed, including chloride, alkaline, mercury and rechargeable types.

The aboriginal American Standards Association (predecessor to ANSI) accepted C18 appeared in 1928. It listed corpuscle sizes application a letter code, almost in adjustment of admeasurement from aboriginal (A) to beyond types. The alone after appellation was the 6-inch alpine "No. 6" cell. The 1934 copy of the C18 accepted broadcast the classification arrangement to cover alternation and alongside arrays of cells. In 1954, mercury batteries were included in the standard. The 1959 copy articular types acceptable for use with transistor radios. In 1967, NEMA took over albatross for development from the National Bureau of Standards. The 12th copy of C18 began to be harmonized with the IEC standard. Rechargeable batteries were alien in the C18 accepted in 1984, and lithium types were connected in 1991.

In 1999 the ANSI standards were abundantly revised and abstracted assurance standards provided. The accepted copy of the ANSI standards designates sizes with an approximate number, with a prefix letter to baptize shape, and with a suffix letter or belletrist to analyze altered chemistry, terminals, or added features.

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