Ring core throttle has core whose two portions are constructed of different materials, and are arranged adjacent to each other

摘要

The ring core throttle has a core (1) which is formed of magnetic material. Two coil windings (6,9) are wound around the core. Two portions (2,3,12,13) of the core are constructed of different materials, and are arranged adjacent to each other. An air gap is formed in one portion of the core.