Coil bobbin for mains isolated electrical transformers - has thickened sections on flanges and provided with slots for foil inserts

摘要

A coil former for use in mains isolated switching transformers has a cylindrical body with flanges and receives a number of separate windings. Each coil winding is isolated by the formation of insulating foils that are located in slots (8). The slots are formed in the internal surfaces of the flanges and have a profile such that the foils can be inserted automatically. ADVANTAGE - Simplified process for coil isolation.