有關腳踏車風力和腳力發電(LED)20點 - 自行車
By Edith
at 2012-05-08T00:00
at 2012-05-08T00:00
Table of Contents
最近參加個比賽,有關環保的,需要做出實品,於是小組討論後利用腳踏車發電讓LED小燈泡亮,以下是我們的構想打算做三個似發電機的東西分別置於前頭(風扇)腳踏車踏板的軸和後輪如果打算將60個小LED燈泡裝在車上的各個位子最少需要多少電力?畢竟LED燈太多所以打算做三個發電機,風扇可以用電腦再用的那
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自行車
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By Hazel
at 2012-05-09T18:29
at 2012-05-09T18:29
By Annie
at 2012-05-09T06:35
at 2012-05-09T06:35
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