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leslie1994
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樓主  發(fā)表于: 2016-07-17 05:25
買(mǎi)了個(gè)24V，8A（商家是這么說(shuō)的）的推拉式電磁鐵。    

1.我量了一下電阻，竟然是0.8歐姆。    這樣的話(huà)功率豈不是很大？

2.我用600W的開(kāi)關(guān)電源供電，很奇怪。
   用細的導線(xiàn)連接，電磁鐵正常工作，不過(guò)5秒不到導線(xiàn)就融了。
   用粗的導線(xiàn)連接，電磁鐵在開(kāi)電的瞬間推出 然后瞬間縮回，同時(shí)開(kāi)關(guān)電源的指示燈滅了。
   然后關(guān)掉開(kāi)關(guān)，開(kāi)關(guān)電源指示燈閃了一下，電磁鐵又是瞬間推出 然后瞬間縮回。
  
  這是怎么回事？   想不明白，求大神指教。
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fkuedn
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1樓  發(fā)表于: 2016-07-24 20:07
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