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作者 lien 在 PTT [ Electronics ] 看板的留言(推文), 共94則
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2F→:縮小體積04/17 23:57
4F推:線性的Mos比較像分壓電阻的感覺 所以上面會有壓降與電流的功04/13 00:00
5F→:率消耗04/13 00:01
6F→:切換式的Mos比較像開關 理論上不會有能量損失(但還是會有)04/13 00:01
1F推:演色性也要注意吧03/19 21:34
3F→:其實每種電路都會爆炸喔~03/08 16:38
2F推:只要觀念正確看的懂得都是好書03/03 19:37
1F→:沒驅動電路?02/12 23:57
2F→:TL494至少要加個totem pole之類的應該比較有辦法驅動MOS喔02/13 00:06
5F→:一個是做開關控制能量傳遞 一個可視為可變電阻調整輸出電壓02/12 13:34
6F→:其實google一下真的很多詳細的資料..02/12 13:34
1F→:迴授電流02/05 21:05
2F推:因為省電燈泡(or螢光燈)跟一般燈泡定義壽命的方式不同02/03 12:24
3F→:一般燈泡說壽命多久 不管如何開開關關 他能亮的時間平均大概02/03 12:26
4F→:就是他說的壽命時間02/03 12:27
5F→:而螢光燈... 如果一直亮著沒有開關 他的壽命似乎可視為無限02/03 12:28
6F→:大 一般螢光燈定義壽命的方式為幾小時開關一次下可使用多久02/03 12:31
7F→:頻繁開關就等於加速老化02/03 12:32
8F→:而且燈泡會不會壞也可能跟ballast的好壞有關02/03 12:34
11F推:樓上你是認真的嗎? @@01/20 00:10
19F推:buck(降壓型)在正半周弦波小於輸出端電壓的時候因為無法降壓01/20 13:24
20F→:PF效果會不好01/20 13:24