並聯與串聯 - 機車
By Lucy
at 2018-10-30T13:30
at 2018-10-30T13:30
Table of Contents
不好意思文組小弟又來請教關於led,
想DIY每邊各三顆12V 3W 的led方向燈
目前已從主線分出一條線,問題來了
我要從這條支線再接上3條線,每條
獨立給每顆燈泡的正極(負極類推上述)
還是先將這三顆燈的正極接在一起後
找隨便一顆接回主線就好?
Google到兩種說法,一種是說電壓會
降,必須增加至12V*3(燈泡數)=36V;
另一種說電流會降而已,這種就比較
沒影響,想說每顆大約才0.25A,三顆
不到1A離電瓶負荷還很遠,而我的車
是交流化油老車,小燈尾燈儀錶都吃
發電機,剎車燈第二段約2A。想請教
大大們感謝。
--
想DIY每邊各三顆12V 3W 的led方向燈
目前已從主線分出一條線,問題來了
我要從這條支線再接上3條線,每條
獨立給每顆燈泡的正極(負極類推上述)
還是先將這三顆燈的正極接在一起後
找隨便一顆接回主線就好?
Google到兩種說法,一種是說電壓會
降,必須增加至12V*3(燈泡數)=36V;
另一種說電流會降而已,這種就比較
沒影響,想說每顆大約才0.25A,三顆
不到1A離電瓶負荷還很遠,而我的車
是交流化油老車,小燈尾燈儀錶都吃
發電機,剎車燈第二段約2A。想請教
大大們感謝。
--
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機車
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