＜p＞Ever wondered if a small dynamo can power up an LED light bulb which have replaced compact florescent light (CFL) bulbs? To prove if it is possible is the reason this e-book came about. I have been selling hacked dynamos and booster circuit for years now and I figure it will be cool if I can show at least proof of concept. And besides it is another good renewable energy project using common materials easily obtained around. So here goes...＜/p＞画面が切り替わりますので、しばらくお待ち下さい。 ※ご購入は、楽天kobo商品ページからお願いします。※切り替わらない場合は、こちら をクリックして下さい。 ※このページからは注文できません。