:::
Browsing this Thread:
1 Anonymous Users
|
Re: 如何產生正弦波
|
||||
|---|---|---|---|---|
|
新會員
 
|
如果頻率要求不需要很精準用開迴路方式就可以達到!
首先你要先定中斷的頻率, 在此假設為10kHz, 則10,000/35=285.71 取286, 接著建一286點sin table. 每中斷一次就順序丟一次, 丟到DA輸出, 如此就可以得到35Hz的正弦波, 此種作法在ISR中還可以做其他事, 如果你的mcu運算夠快, 你可以使用現成的sin function試試! 再用示波器驗證!
發表於: 2007/1/18 11:17
|
|||
|
||||
|
如何產生正弦波
|
||||
|---|---|---|---|---|
|
初級會員
|
請問要如何使用單晶片來產生35Hz的正弦波輸出 ?
發表於: 2007/1/18 9:19
|
|||
|
||||
You can view topic.
你 不可以 發起新主題
You cannot reply to posts.
You cannot edit your posts.
You cannot delete your posts.
You cannot add new polls.
You cannot vote in polls.
You cannot attach files to posts.
You cannot post without approval.
You cannot use topic type.
You cannot use HTML syntax.
You cannot use signature.
You cannot create PDF files.
You cannot get print page.
