| 摘要 |
A magnetic power apparatus includes an outer shell made of magnetically conductive metal, the outer shell having a through hole on one side wall thereof, an iron core axially movably disposed inside the outer shell, a coil positioned in the outer shell around the iron core and controlled to mo ve the iron core axially in the outer shell, a first permanent magnet and a second permanent magnet symmetrically mounted inside the outer shell and axially aligned at two opposite sides of the iron core with same pole aimed against each other, and a driving circuit disposed outside the outer shell and connected with a power output line thereof to the coil to charge a capacitor, the driving circuit outputting to the coil a positive impulse voltage when electrically connected, or a negative impulse voltage when electrically disconnected, causing the iron core to shift the iron core, and causing the first permanen t magnet and the second permanent magnet to change magnetic path and to keep the iron core in shifted position.
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