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<p>　　<strong>高频å˜åŽ‹å™?/strong>的交æµæŸè€—是由高频电æµçš„趋肤效应以åŠç£èŠ¯çš„æŸè€—引起的。高频电æµé€šè¿‡å¯¼çº¿æ—¶æ€»æ˜¯è¶‹å‘于从表é¢æµè¿‡ï¼Œè¿™ä¼šä½¿å¯¼çº¿çš„有效æµé€šé¢ç§¯å‡å°ï¼Œå¹¶ä½¿å¯¼çº¿çš„交æµç‰æ•ˆé˜»æŠ—远高于铜电阻ã€?/p>
<p>　　高频电æµå¯¹å¯¼ä½“çš„ç©¿é€èƒ½åŠ›ä¸Žå¼€å…³é¢‘çŽ‡çš„å¹³æ–¹æ ¹æˆå比，为å‡å°äº¤æµé“œé˜»æŠ—，导线åŠå¾„ä¸å¾—超过高频电æµå¯è¾¾æ·±åº¦çš?å€ã€‚å¯ä¾›é€‰ç”¨çš„导线线径与开关频率的关系曲线如图1所示。举例说明，当f=100kHz时，导线直径ç†è®ºä¸Šå¯å?phi;0.4mm。但为了å‡å°è¶‹è‚¤æ•ˆåº”，实际å¯ç”¨æ›´ç»†çš„导线多股并绕，而ä¸ç”¨ä¸€æ ¹ç²—导线绕制ã€?br />
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