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作者 pdaer 在 PTT [ Electronics ] 看板的留言(推文), 共445則
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15F推:從RC玩起吧 熟了再去玩四軸飛機05/20 22:22
14F推:Vt=1V Q2 不流電流 那讓Q1過一個Vt電流就搶過來了= =05/23 21:25
15F→:你取2 我實在看不懂你要怎麼跟Q2搶電流....05/23 21:26
28F推:偏壓有做好 電流飄個20%都算正常 除非你要做很低電流或低壓05/23 21:43
4F推:搜尋balun04/21 11:07
4F推:一開始切到重載從Cout抽大電流會有一個壓升是來自ESR10/15 23:18
5F→:不知道你是做current mode還是? voltage mode電感迴路會比較10/15 23:19
6F→:慢是正常的...10/15 23:19
14F→:用CC mode transient抽載看看10/16 20:33
1F→:抑制突波器? 類似TVS的東西10/15 23:20
3F推:不確定..猜的 你的圖我開不了10/16 15:23
16F推:IR drop哪會掉這麼大= = probe拿著亂插亂量才會掉這多10/15 23:26
1F→:估不準的 所以才要用電流去偏壓而不是節點電壓06/04 16:55
4F推:偏壓電路先設計,vds抓個0.1~0.2V,設計出來的size蠻ok的06/04 19:21
5F→:頂多有一兩顆差一點而已 整體調好之後mirror過去放大器就好06/04 19:21
6F推:頂多敏感的節點用.ic指令先把手算電壓指定一下 讓收斂快一點06/04 19:24
8F推:看製程 .35 .18都還好 只是要精到每一顆要吃多少vds不太可能06/04 20:02
13F→:Id=unCox(W/L)*Vov平方 Vds就是Vov 一般取0.1~0.2 看你想讓06/05 00:28
14F→:MOSFET操作在深度飽和還是弱反轉一點06/05 00:28
15F→:這跟Rout以關 看應用來訂06/05 00:29
16F→:你舉個電路來當例子可能板上會多一點討論 光是大方向這樣討06/05 00:30
17F→:論不完的 光OP就好幾種了06/05 00:30
36F推:可能誤會我意思了吧 希望衍生有更具體的討論06/06 13:13
8F→:不然你說說看接個小電阻偏壓一直耗電的理由是啥?04/29 22:54
1F推:對於未知特性的電路 的確回歸到基本方法是正確的11/20 21:45
2F推:不過考試的話..........還是有些撇步啦 多學一點總是好11/20 21:53