| 摘要 |
A magnetic induction heater uses a stationary target which is electrically conductive. A plurality of stationary magnets with fixed poles are positioned near the target to induce at least a first and a second magnetic field in the target, where the first and second magnetic fields are different. A shuttering device alternately blocks or allows the magnetic fields from the magnets to reach the target. The shuttering device is activated to alternately allow and block the first and second magnetic fields from the target, such that the target is exposed to varying magnetic fields to produce heat.
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