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作者 wahaha99 在 PTT [ Electronics ] 看板的留言(推文), 共95則
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1F→: 連標示都沒標示的一顆野生馬達,大概不會有人知道IP多少03/15 18:17
2F→: 你要解決這個問題,可以聯絡SGS請他們幫你測試...03/15 18:17
31F推: 哪間學校大二這樣搞 我該說台灣有救了還是? XD07/05 20:47
5F→: 不是...是python+mraa06/14 22:58
1F推: 0歐姆 1.當Jumper用 開發階段尚未決定要不要/要如何連通07/18 10:45
2F→: 2. costdown 最常見的是把bead省掉07/18 10:45
12F→: 不能說取代bead 一般是偷料.... bead比較貴07/18 19:16
1F推: 人耳頻率可以到23k 應該要定頻然後調dute cycle07/18 10:36
1F推: 感謝回覆06/26 18:10
18F→: 感謝各位回覆06/26 18:10
1F推: 阻抗越小越好 你要大電流當然是小阻抗...10/08 15:56
2F→: 輸入阻抗才是大一點比較好(不能無限大)10/08 15:57
3F→: 你會有大阻抗的觀念是不是跟電流源搞混了10/08 15:58
15F推: 你那個是"並聯"喔... 你要是以等效電流源來看,10/09 00:51
16F→: 阻抗無限大...但現實中的運作要考慮電壓的10/09 00:51
17F→: pttptt2008說的沒錯... 一般我們的功率放大器考慮的是10/09 00:53
18F→: 輸出 "這麼大的電壓" 並 "提供這麼多的電流"10/09 00:53
19F→: 輸出阻抗, 你是要串連一個電阻上去想就知道...10/09 00:54
20F→: 這電阻值越大, 能供電流就越小10/09 00:54
21F推: 除非你要做的是純電流放大--將電流乘上固定倍數，10/09 01:59
22F→: 而不管輸出電壓，這種電路很少見就是10/09 02:00
3F→:我的鋰電池還沒選,我可能會直接選已經內建保護的,03/07 10:17
4F→:但問題還是不知道有沒有內建過放保護,以及保護的電壓多少03/07 10:17
9F→:嗯嗯,感謝,我再研究看看03/07 10:36
18F→:OK啦... orz 唉07/22 11:47