... of Multipolar(4/6 or more polar) Permanent Magnet Multipolar permanent magnet is one component of accelerator. Per ... of instable current, voltage.The quadruple permanent magnet ensures the stability of polarization. Photos: An ... magnets Speakers, Earphones, Microphones, Loudspeakers, Mobile Phone, Automobile, Motor, Engines, Printer, Toys, instrument and detecter, Sensors, Generator, ...