h a l f b a k e r yWith moderate power, comes moderate responsibility.
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I've never used battery-powered buds, but the idea of using
temperature to turn them on sounds good. [+] |
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Here's a blog from a guy trying to actually make thermoelectric ear buds which require no external power source. [link] |
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Baked. If you look at Lt. Uhura's earpiece, you'll see it has a prominent finned portion. This is the external heatsink for the Seebeck-effect thermopile that powers it. |
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The unit activates automatically when inserted into an ear canal. |
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That's different from the concept currently under discussion. |
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[2fries], heat to electricity is the Seebeck or Thermocouple effect; the Peltier effect is the reverse - current to heat-pumping. |
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Oh, I haven't looked up Pelttier yet.
I've only gotten as far as the D's in the Everythingictionary, but this guy specifically mentions using Peltier plates as a power source for ear buds. |
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Peltier devices can be used "backwards" to generate electricalenergy. |
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