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高频å˜åŽ‹å™¨çš„设计和结è®?/h3>
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<p>　　<strong>高频å˜åŽ‹å™?/strong>的设计首先是ç£èŠ¯çš„选择,开关电æºå˜åŽ‹å™¨ç£èŠ¯å¤šæ˜¯åœ¨ä½Žç£åœºä¸‹ä½¿ç”¨çš„软ç£æ料，它有较高ç£å¯¼çŽ‡ï¼Œä½Žçš„矫顽力，高的电阻率。ç£å¯¼çŽ‡é«˜ï¼Œåœ¨ä¸€å®šçº¿åœˆåŒæ•°æ—¶ï¼Œé€šè¿‡ä¸å¤§çš„æ¿€ç£ç”µæµå°±èƒ½æ‰¿å—è¾ƒé«˜çš„å¤–åŠ ç”µåŽ‹ï¼Œå› æ¤ï¼Œåœ¨è¾“出一定功率è¦æ±‚下，å¯å‡è½»ç£èŠ¯ä½“积。ç£èŠ¯çŸ«é¡½åŠ›ä½Žï¼Œç£æ»žé¢ç§¯å°ï¼Œåˆ™é“耗也少。高的电阻率，则涡æµå°ï¼Œé“耗å°ã€‚é“氧体æ料是å¤åˆæ°§åŒ–物烧结体，电阻率很高，适åˆé«˜é¢‘下使用，但Bs值比较å°ï¼Œå¸¸ä½¿ç”¨åœ¨å¼€å…³ç”µæºä¸ã€?/p>
<p>　　高频å˜åŽ‹å™¨çš„设计通常采用两ç§æ–¹æ³•ï¼šç¬¬ä¸€ç§æ˜¯å…ˆæ±‚出ç£èŠ¯çª—å£é¢ç§¯ä¸Žç£èŠ¯æœ‰æ•ˆæˆªé¢ç§¯çš„乘积第二ç§æ˜¯å…ˆæ±‚å‡ºå‡ ä½•å‚数，查表找出ç£èŠ¯ç¼–å·ï¼Œå†è¿›è¡Œè®¾è®¡ã€‚æ ¹æ®è®¾è®¡çš„过程å¯å¾—出结è®?</p>
<p>　　1.设计ä¸ï¼Œåœ¨æœ€å¤§è¾“出功率时，ç£èŠ¯ä¸çš„ç£æ„Ÿåº”强度ä¸åº”达到饱和，以å…在大信å·æ—¶äº§ç”Ÿå¤±çœŸã€?/p>
<p>　　2.在瞬å˜è¿‡ç¨‹ä¸ï¼Œé«˜é¢‘链æ¼æ„Ÿå’Œåˆ†å¸ƒç”µå®¹ä¼šå¼•èµ·æµªæ¶Œç”µæµå’Œå°–峰电压åŠè„‰å†²é¡¶éƒ¨æŒ¯è¡ï¼Œä½¿æŸè€—å¢žåŠ ï¼Œä¸¥é‡æ—¶ä¼šé€ æˆå¼€å…³ç®¡æŸå。åŒæ—¶ï¼Œè¾“出绕组åŒæ•°å¤šï¼Œå±‚数多时，应考虑分布电容的影å“，é™ä½Žåˆ†å¸ƒç”µå®¹æœ‰åˆ©äºŽæŠ‘制高频信å·å¯¹è´Ÿè½½çš„干扰。对åŒä¸€å˜åŽ‹å™¨åŒæ—¶å‡å°‘分布电容和æ¼æ„Ÿæ˜¯å›°éš¾çš„ï¼Œåº”æ ¹æ®ä¸åŒçš„工作è¦æ±‚，ä¿è¯åˆé€‚的电容和电感ã€?/p>
<p>　　3.工作频率越高，趋肤效应影å“è¶Šå¤§ï¼Œå› æ¤ï¼Œåœ¨è®¾è®¡æ—¶åº”注æ„趋肤效应引起的有效é¢ç§¯çš„å‡å°‘ã€?/p>
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