IMPROVED MAGNETOPERMANENT PLATE

摘要

An improved magnetopermanent plate, constituted by metallic body with high magnetic permeability, in the active plane of which there are provided hollow seats for accommodating corresponding coils composed of turns of electrically conducting wire covered with a sheath made of a material based on fluorocarbon resins; the turns are further mutually bound by means of a vitreous medium and are enclosed in a likewise vitreous protective element; the coils can be accommodated in the hollow seats, between which magnetopermanent means with a low polarization temperature coefficient are accommodated; means are provided for retaining the coils in the corresponding hollow seats.