Is there any simple, low-energy way to make a permanent magnet able to turn 'on and off' (similar to an electromagnet)? - Quora
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Permanent Magnet Switch M8 No Proximity Switch Normally Open With Magnet Distance 10mm Hall Sensor Npn - Switches - AliExpress
Is there any simple, low-energy way to make a permanent magnet able to turn 'on and off' (similar to an electromagnet)? - Quora
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Sensors | Free Full-Text | Improvement of Model Predictive Current Control Sensing Strategy for a Developed Small Flux-Switching Permanent Magnet Motor
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