Permanent magnet-holding electromagnet combination for armature holding, with magnetic circuit containing permanent magnet, core, and armature to be held, with magnetic coil

摘要

Permanent-electromagnetic combination (1) for armature (2) holding includes permanent magnet(s) (4), core (5) and armature to be held. There is current supplied coil (7) with magnetic field opposite to that of magnetic circuit.Between core and armature is operational air gap. Core and armature holding face (12) are mutually relatively displaceable. Preferably, holding face is formed by yoke (6) of magnetic circuit.