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scw威偉
互幫互助，共建美好社會(huì )。給他人方便就等于方便了自己。
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樓主  發(fā)表于: 2012-11-18 11:34
兩個(gè)接觸器（各兩對常開(kāi)和常閉），一個(gè)時(shí)間繼電器（各兩對延時(shí)常開(kāi)和常閉），兩個(gè)按鈕（常開(kāi)常閉互鎖），一個(gè)電鈴，控制要求：按下SB1電鈴響3S后KM1吸合，松開(kāi)SB1，KM1放開(kāi)；按下SB2電鈴響3S后KM2吸合，松開(kāi)SB2，KM2放開(kāi)；KM1和KM2不能同時(shí)吸合，畫(huà)出最簡(jiǎn)單安全的控制電路圖。。。。這是我們剛進(jìn)電工班的入班必會(huì )題，也就是面試題目，大家不妨入手試試看，也可以上傳電路圖給大家學(xué)習學(xué)習，，，，哈哈.......
困難像彈簧，你強它就弱，你弱它就強！
heyue
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1樓  發(fā)表于: 2012-11-19 09:08
呵呵，沒(méi)進(jìn)過(guò)電工班

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