Yahoo奇摩知識+將於 2021 年 5 月 4 日 (美國東部時間) 終止服務。自 2021 年 4 月 20 日 (美國東部時間) 起，Yahoo奇摩知識+服務將會轉為唯讀模式。其他Yahoo奇摩產品與服務或您的Yahoo奇摩帳號都不會受影響。如需關於Yahoo奇摩知識+ 停止服務以及下載您個人資料的資訊，請參閱說明網頁。
有關簡易馬達DIY，麻煩翻譯成中文.
To make rotating LED, what output voltage should the battery produces?
Why is it necessary to limit the current in red LED? What current should be reached to rotate white and color LEDs?
There are nearly a dozen fancy creative shapes which give more motives and encourage hands-on experiments.
1 個解答
- ?Lv 68 年前最佳解答
To make rotating LED, what output voltage should the battery produces?
為了要讓發光二極體旋轉, 電池需要產生多少電壓?
Why is it necessary to limit the current in red LED?
What current should be reached to rotate white and color LEDs?
抑/限制紅色發光二極體的電流有什麼重要性?
應該要到達多少電流才能讓白色與有色的發光二極體旋轉?
There are nearly a dozen fancy creative shapes which give more motives and encourage hands-on experiments.
有近幾十個能給予動機與鼓勵手動實驗的花式創造型形狀.
參考資料： 自己翻的唷 :)
