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工控玩家
澧縣電氣自動(dòng)化
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樓主  發(fā)表于: 2008-11-25 18:34
我有一個(gè)想法，現沒(méi)有試過(guò)，就是用晶體管輸出的PLC，發(fā)出一個(gè)高速脈沖驅動(dòng)喇叭發(fā)出聲音做報警用，發(fā)出不同的頻率可發(fā)出不同的警報聲。這樣可行嗎？
fjqz00
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1樓  發(fā)表于: 2008-11-26 17:32
有能識別高速脈沖信號的報警器嗎？

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