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      開(kāi)關(guān)電源中RC緩沖電路的設(shè)計(jì)應(yīng)用

      2013-07-08
      立即下載

      在帶變壓器的開(kāi)關(guān)電源拓?fù)渲校_(kāi)關(guān)管關(guān)斷時(shí),電壓和電流的重疊引起的損耗是開(kāi)關(guān)電源損耗的主要部分,同時(shí),由于電路中存在雜散電感和雜散電容,在功率開(kāi)關(guān)管關(guān)斷時(shí),電路中也會(huì)出現(xiàn)過(guò)電壓并且產(chǎn)生振蕩。如果尖峰電壓過(guò)高,就會(huì)損壞開(kāi)關(guān)管。
       

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