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A remote control that needs no batteries

Smk_remote-thumb.jpgThis strange-looking little contraption is a prototype television remote by Japan's SMK. What makes it unique? Well, how about the fact that it doesn't require batteries? Instead, it uses an electromagnetic coil inside to power itself forever and ever, never requiring external power. Right now, it only has a power button and channel and volume controls, but they hope to add more functions in the future.

It's certainly neat, but how much juice to remotes suck up? I feel like replacing remote batteries is a relatively rare occurrence and the batteries used up by these things aren't that big a deal. But I guess every little bit counts, and if every TV sold came with a battery-free remote it would clear a sizable load of batteries out of landfills. So good on you, SMK.

Far East Gizmos, via Boing Boing Gadgets

         
Comments

Electromagnetic coil? Is this thing violating the laws of physics. Please explain how it gets power.

Bill Drew, look up electromagnetic induction power. Its how those shake for power forever flashlights are powered. A magnet is moved through a wire coil that is connected to a power amplification circuit which then in turn shunts the power to a battery or high capacitance capacitor. This one looks like it has a hand lever on it so that when depressed it would generate electricity and thus be stored either in a high capacitance capacitor or micro battery of some sort.

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