The said power source is suitable for where mechanical energy is needed, esp where work is to be done in one half cycle and energy is to be compensated in the other half cycle and where the temp is high. In the said power source, rare-earth permanent-magnet material is used to produce stator and rotor, whose mutual attraction is utilized to complete doing work. After work is done, the rotor winding is switched on to produce a magnetic field counterbalancing the inherent magnetic field of rotor. Acted by the inertia force or other force, the rotor continues rotating for 180 degs. Then the rotor winding is switched off and one cycle is completed. |