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趙仁清
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樓主  發(fā)表于: 2010-03-08 19:23
我廠(chǎng)的24V直流電機用直流接觸器控制。但由于動(dòng)作頻繁經(jīng)常燒觸點(diǎn)，想用可控硅控制，但不知如何控制，望高手指點(diǎn)啊
天使之心
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1樓  發(fā)表于: 2010-03-08 22:13
正轉時(shí)VT1、VT4導通，反轉時(shí)VT2、VT3導通。

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