EN 61248-7:1997 电子和通信设备用变压器和电感器.第7部分:采用能力批准程序的高频电感器和中频变压器分规范 IEC 61248-7-1997
Transformers and Inductors for Use in Electronic and Telecommunication Equipment Part 7: Sectional Specification for High-Frequency Inductors and Intermediate Frequency Transformers on the Basis of the Capability Approval Procedure