A tiny diving board can extract power from the magnetic fields around mains cables, according to Penn State university. The device is a magneto-electric-coupled magneto-mechano-electric (ME MME) energy converter that can produce mW power in a 300μT field and operate below 100μT. “Output power from ≤50μT magnetic fields is sufficient to operate a digital clock ...

This story continues at Milliwatts of electricity from mains magnetic field

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