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作者 disap 在 PTT [ Electronics ] 看板的留言(推文), 共9則

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[問題] bjt反應慢要如何解決

[ Electronics ]31 留言, 推噓總分: +12

作者: ccbruce - 發表於 2019/03/28 01:56(6年前)

30^F推disap: 雖然IO能耐5V 但超過VDD後內部會啟動另一組保護電路爬升時03/30 14:18

31^F→disap: 間會變慢如果要跑高速訊號建議洗板前先實驗看看03/30 14:18

[問題] 不太懂示波器，試著修理還是怪怪的

[ Electronics ]11 留言, 推噓總分: +8

作者: besteam0 - 發表於 2018/06/14 20:33(7年前)

3^F推disap: 按下 VERTICAL MENU 按鍵，裡面的衰減倍率可以調整06/16 00:39

5^F推disap: 試試看把"探棒"1X改成其他數值06/16 20:49

7^F推disap: 關於波型歪掉的部分看探棒上有沒有能用一字起轉的旋鈕06/16 20:52

[問題] 藍芽連線

[ Electronics ]4 留言, 推噓總分: 0

作者: eamansf96xs - 發表於 2018/06/13 19:52(7年前)

3^F→disap: 4.1你要找BLE連線的APP，那是低功號的藍芽，和傳統藍芽不同06/16 00:41

[問題] DC訊號0-15V訊號的檢測

[ Electronics ]22 留言, 推噓總分: +5

作者: AirLee - 發表於 2018/06/14 12:48(7年前)

12^F推disap: 訊號進來先接一級buffer，再用電阻分壓，如果對訊號接近0V06/14 23:45

13^F推disap: 的地方需要量到很準確，就要用負電源IC供應buffer的GND06/14 23:47

14^F→disap: 因為電阻會有誤差，最後還要在軟體上實現校正程序06/14 23:49

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