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IEC 60431:1973 ed1.0

Заменен
Dimensions of square cores (RM-cores) made of magnetic oxides and associated parts — 6 стр.
Specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of square cores (RM-cores) made of magnetic oxides, the dimensional limits for wound coil formers to be used with these cores and the locations of their terminal pins on a 2,54 mm printed wiring grid in relation to the base outlines of the cores.
ICS
29.100.10 Magnetic components / Магнитные компоненты