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[問題] 主動平衡保護電路

[ Electronics ]17 留言, 推噓總分: +6

作者: tpo3 - 發表於 2018/06/11 23:26(6年前)

14^F推yudofu: 1.電阻是看偏壓計算的，大小要看你等效電路要提供的電流06/12 07:12

15^F→yudofu: ，有偏壓有電流就可以計算了 2.關鍵字 Vref 3.你的分流是06/12 07:16

16^F→yudofu: 把高輸入電壓多餘部分直接丟棄，大電流時單純就是浪費而已06/12 07:19

[問題] 為什麼1MHz的振盪器停產了??

[ Electronics ]13 留言, 推噓總分: +4

作者: qeagle - 發表於 2018/06/06 21:25(6年前)

4^F推yudofu: 換個包裝不就好了？06/07 23:01

7^F推yudofu: 現在晶片愈切愈細，消費型產品就算是低頻或者sleep clock06/08 14:37

8^F→yudofu: 也是用高頻除出來的，甚至有的聯網裝置因為採用ntp對時06/08 14:38

9^F→yudofu: ，已經不要求RTC的精準度，連鐵打的32.768k都被淘汰，06/08 14:39

10^F→yudofu: 使用低頻震盪的領域會愈來愈小06/08 14:42

[問題] ADC -> DAC

[ Electronics ]20 留言, 推噓總分: +9

作者: DamnKobe - 發表於 2018/05/25 05:35(6年前)

4^F推yudofu: 用buffer作fan out，拉到一個特製的量測環境(有shielding05/25 10:32

5^F→yudofu: 已經特別針對雜訊處理的DAC板)，再讓他們去量05/25 10:33

[請益] led燈管設計問題

[ Electronics ]32 留言, 推噓總分: +3

作者: lynnlynn224 - 發表於 2018/05/02 22:27(6年前)

30^F推yudofu: rd走了沒人問你還敢呆？05/04 00:47

[問題] 蕭特機二極體

[ Electronics ]16 留言, 推噓總分: +6

作者: iwantzzz - 發表於 2018/04/23 22:08(6年前)

7^F推yudofu: 你可以找出幾種二極體，把參數比較一下就知道了04/24 08:43

[問題] 測量手機即時電流

[ Electronics ]21 留言, 推噓總分: +7

作者: CaliforCat - 發表於 2018/04/11 21:21(6年前)

15^F推yudofu: 手機的電池都會送去學習，只是你自己用電表量有精度沒動態04/16 10:16

16^F→yudofu: ，用電流探棒有動態沒精度，用logger兩個都沒有，我們都是04/16 10:16

17^F→yudofu: 用專用的高動態高取樣，可長時間紀錄的儀器。如果你是紀錄04/16 10:16

18^F→yudofu: 非深度睡眠的耗電，用app其實就可以了，你自己要先定義這04/16 10:16

19^F→yudofu: 些東西才能選擇適當的設備。04/16 10:16

[問題] 什麼IC晶片可以5V升9V 並且低電流

[ Electronics ]19 留言, 推噓總分: +9

作者: jjmachen - 發表於 2018/04/08 01:12(6年前)

11^F推yudofu: 拍賣買模組就好了，幹嘛自己從IC開始搞，神經病04/08 22:35

[建議] 遠端更新fpga code in the field

[ Electronics ]11 留言, 推噓總分: +4

作者: MrChiang - 發表於 2018/03/23 15:51(6年前)

6^F推yudofu: 再一個mcu連網，再用那個mcu燒，同時mcu有出貨fw跟new fw03/23 20:28

7^F→yudofu: ，跟前版fw，可以自由更新03/23 20:28

Fw: [理工] Diode

[ Electronics ]5 留言, 推噓總分: +2

作者: suspect1 - 發表於 2018/02/24 17:20(6年前)

4^F推yudofu: 你知道二極體導通的條件嗎？= =02/24 22:51

[問題]量測功耗的電阻瓦數一問

[ Electronics ]13 留言, 推噓總分: +2

作者: a22326284 - 發表於 2018/01/08 22:57(6年前)

12^F推yudofu: 溫度誤差要看係數==>看承認書燒毀==>瞬間承受功率==>看乘01/11 08:40

13^F→yudofu: 認書，不然自己想辦法散熱01/11 08:40

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