Noise filter for power supply applications, has bobbin formed by two semicylindrical elements fitting around core to receive windings and base with opening at upper end for receiving bottom of metal frame

摘要

The filter has a magnetic metal frame (20) with a rectangular element (200) and a central transverse rod portion (204) , a cylindrical bobbin (21a) formed by two semicylindrical elements which can fit around the rod. The bobbin has first and second winding spaces (216,217) on which the filter coil windings are formed, and a base with an opening at the upper end for receiving the bottom of the metal frame.