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ntlxfei18
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樓主  發(fā)表于: 2018-03-24 21:48
請教大家，用pwm來(lái)控制固態(tài)實(shí)現加熱或控制電機轉速。實(shí)際就是控制固態(tài)的通斷。那和直接開(kāi)關(guān)來(lái)控制固態(tài)的通斷有什么區別呢。   我知道pwm是通過(guò)占空比來(lái)實(shí)現控制的，但是想不透徹。還請大家指點(diǎn)迷津。謝謝。。。
jum1982
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1樓  發(fā)表于: 2018-03-27 18:54
固態(tài)繼電器無(wú)機械觸點(diǎn)，不會(huì )產(chǎn)生電弧電火花，通斷頻率高，缺點(diǎn)是超過(guò)額定容量容易被擊穿。

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