http://store.sundancesolar.com/lafoledflnob.html
================================================
These amazing LED Forever Flashlights use the Faraday Principle of
Electromagnetic Energy eliminating the need for replacement bulbs
or batteries. Just as in a car generator, when wire moves though a
magnetic field, energy is created. By shaking the flashlight for
15-30 seconds enough energy is created and stored in the capacitor
to shine the super bright LED for 5 minutes of continuous light.
==> 在 "小美" <pretty@pchome.com> 的文章中提到:
> 這裡有詳細的解釋喔
> http://www.the-gadgeteer.com/forever-led-flashlight-review.html
> 不過是英文的啦
> "BNM," <BNM1982.bbs@ptt.cc> 在郵件 news:4HM5AT$6fY@ptt.cc 中撰寫...
> 網路能找到的資料少之又少
> 最近有份報告要知道其相關的原理
> 可是我又不是學這方面的
> 有人對這方面有詳細的研究嗎
> 或是能提供相關的網站參考
> 感激不進~~~~~~
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* Origin: ★ 交通大學資訊科學系 BBS ★ <bbs.cis.nctu.edu.tw: 140.113.23.3>