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點擊下載中電智科超御N系列PLC產品指南 Wi-Fi-7第七代無線網絡技術專題 SDV軟件定義汽車技術專題點擊了解訂《電子技術應用》雜志送開發(fā)板活動

魚缸水泵自動開?？刂齐娐?

2016-11-18 09:40

關鍵詞：控制電路電路水泵

魚缸水泵自動開?？刂齐娐? src="http://files.chinaaet.com/dianlutu/69/6469-1.jpg" style="cursor:hand" border=0>

如圖所示為魚缸水泵自動開?？刂齐娐?。它采用兩只555時基電路組成,。其外圍電路具有相似的結構,，通過交連電容C5,、C3形成閉環(huán),。該裝置運行有兩個狀態(tài)：即工作狀態(tài)和間歇狀態(tài)。為了保證達到每次開啟電源時裝置處于工作狀態(tài)(即水泵運行狀態(tài)),，在IC1的4腳有R3和C2組成的復位電路,。此電路最小間歇半小時，最大間歇3h,。按圖中R10給出的數值,，水泵工作時間為25min～30min,。可根據需要改變其阻值的大小,，自行確定工作時間,。

元器件選擇：C3、C5須選用無極性電容,。K1用單刀6位波段開關,。其他元器件選用如圖所示。

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