魚缸水泵自動開?？刂齐娐?

2016-11-18 09:40
關(guān)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(shí)基電路組成。其外圍電路具有相似的結(jié)構(gòu)，通過交連電容C5、C3形成閉環(huán)。該裝置運(yùn)行有兩個(gè)狀態(tài)：即工作狀態(tài)和間歇狀態(tài)。為了保證達(dá)到每次開啟電源時(shí)裝置處于工作狀態(tài)(即水泵運(yùn)行狀態(tài))，在IC1的4腳有R3和C2組成的復(fù)位電路。此電路最小間歇半小時(shí)，最大間歇3h。按圖中R10給出的數(shù)值，水泵工作時(shí)間為25min～30min?？筛鶕?jù)需要改變其阻值的大小，自行確定工作時(shí)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(guān)。其他元器件選用如圖所示。 </div> </div><!--//end of 內(nèi)容詳細(xì)--> </div> <!--//end of mid-banner 2--> <div id="in3kvrc" class="box borderless"> <div id="twc889h" class="bullhorn-text"> <a href="http://www.theprogrammingfactory.com/tt/iYRzIn" target="_blank" rel="nofollow">點(diǎn)擊查看ChinaAET RISC-V專題</a> <a href="http://www.theprogrammingfactory.com/tt/q6zY7j" target="_blank" rel="nofollow">歡迎查看AET-ChatGPT專題</a> <a href="http://www.theprogrammingfactory.com/tt/3aYNbq" target="_blank" rel="nofollow">點(diǎn)擊了解國有企業(yè)數(shù)字化轉(zhuǎn)型專題</a> <a 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