[問題] 請問有辦法減緩LED在開關的時候壓降嗎?
小弟的電路裡有八個開關控制一串LED
VDD
|
LED
|
Vx
|
D
G X8
S
|
___
(不會用ptt畫圖 Q_Q)
八個MOS開關切換的瞬間會造成Vx點電壓下降
有辦法減緩或消除這點的電壓下降
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09/29 23:06, , 1F
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有試過1pf~50pf
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回各位大大,這8顆開關的size是2^n,用前端的訊號給不同組合的開關來產生不同的亮度
然後再開關切換的瞬間的電壓變化影響到調光的線性度
※ 編輯: brianshe (140.125.35.68), 09/30/2014 13:08:45
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