Buy the big motors we most often come into contact with The permanent magnet DC motor is also composed of stator magnetic pole, rotor, electric brush, housing, etc. Stator magnetic pole USES permanent magnet (permanent magnetic steel), including ferrite, al-Ni-co, NdFe-B and other materials.According to its structure form can be divided into cylinder type and tile type and so on.Most of the electricity used in VCR are cylindrical magnets, while most of the motors used in electric tools and automotive electrical appliances are block magnets.
The rotor is generally made of silicon steel and has fewer slots than the rotor of electromagnetic DC motor.Most of the small power motors used in the VCR are 3 slots, and the higher grade are 5 or 7 slots.Enameled wire is wound between two slots in the core of the rotor (three slots have three windings), and the joints are welded to the metal plate of the commutator respectively.The electric brush is a conductive part connecting the power supply and the rotor winding.The brush of permanent magnet motor USES single metal sheet or metal graphite brush and electrochemical graphite brush.
The permanent magnet dc motor used in the VCR adopts electronic speed stabilizing circuit or centrifugal speed stabilizing device.
