UDC 621.314~2.045+621.318.42:621.38                         LITD 5

( Supeneding IS : 3289. 1965 and IS : 4002 - 1967 )

Reaffirmed 2020

1. Scope

1.1 This standard (Part III) lays down the tests and requirements of audio frequency transformers with two or more windings and chokes with or without dc polarization, used in- electronic equipment including transistor circuits.

1.2 This standard does not cover pulse and blocking oscillator transformers and transformers used in dc to dc conversion equipments.