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Re: dspic30f6010偵測輸入電壓是否被關掉
#2
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問題描述不夠詳細,可用方法很多...

例如:
先轉方波,DSpic如在一定時間內無法偵測到此方波,即知不存在

adc進來由程式判斷有無符合條件之波形

整流,rc濾波,送給 schmitt input

以上在必要處需作適當的放大或分壓, 產生適合 pic 的電壓準位

...

發表於: 2009/11/13 7:37
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dspic30f6010偵測輸入電壓是否被關掉
#1
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PIC的輸入電壓是正弦波,我想請問說當正弦波被關掉的時候,有什麼方法可以立即偵測到輸入電壓已經被關掉了,謝謝各位的好心回答。

發表於: 2009/11/11 2:10
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