Re: [WP8 ] 用你家的電磁爐替lumia920充電
看板WindowsPhone作者Destiny7886 (vul-3)時間11年前 (2012/11/13 22:48)推噓14(14推 0噓 17→)留言31則, 13人參與討論串2/2 (看更多)
: 這位老兄一定是瘋了~
: 下次臨時沒充電器或許還有替代方法…
: NokiaTW：哈哈，你看看你！
其實這位老兄並沒有瘋，他只是"大膽"的應用物理學~
電磁爐原理如下
http://ppt.cc/u83r
一般使用上，電磁爐只是透過電磁感應使"金屬鍋底"產生電流
P=I^ *R
所以在高電流通過並不小的鍋底電阻時，產生大量熱能加熱食物
而無線充電只是將產生的電流轉向充入電池
由於內附的線圈電阻遠小於鍋底，並且這些電流有地方宣洩
所以並不會產生大量的熱
....以上用遠古時代的高中物理騙騙文章數XD
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※ 發信站: 批踢踢實業坊(ptt.cc)
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