本文对非饱和模式下的二次直流电源进行了研究，并设计了一种输出无纹波的隔离式直流电源。
The paper researches the quadric direct-current source in non-saturation mode, and designs an isolation direct-current source which has non-ripples wave output.
高集成度以及边界模式操作的运用可为传统上难以解决的隔离式供电问题提供了简洁的应用解决方案。
The high level of integration and the use of boundary mode operation results in a simple, clean application solution to the traditional challenge of isolated power delivery.
来自田纳西州的“栋笃笑” [3] “戴夫老兄”加德纳，曾对1954年联邦法院终止种族隔离式教育的判令插科打诨道：“亲爱的，让他们去上学吧。
“Brother Dave” Gardner, a stand-up comic from Tennessee, greeted the 1954 Supreme Court order to end segregated schools with the quip: “Let 'em go to school, beloved.
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