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<p><span style="font-size: 14px;"><a href="http://www.chenfeipower.com">高频å˜åŽ‹å™?/a>是相对于音频和工频å˜åŽ‹å™¨è€Œè¨€çš„。我们将工作频率在音频以上的å˜åŽ‹å™¨ç»Ÿç§°ä¸ºé«˜é¢‘å˜åŽ‹å™¨ã€‚一般，我们将高频å˜åŽ‹å™¨åˆ†ä¸ºä¸¤ç§ç±»åž‹ï¼Œä¸€ç§ç§°ä½œä¸ºå•é¢‘或窄频级的高频å˜åŽ‹å™¨ï¼Œå…¶å·¥ä½œé¢‘率为å•ä¸€é¢‘率或是一个较窄的频段，如å˜æ¢å™¨å˜åŽ‹å™¨ã€æŒ¯è¡å™¨å˜åŽ‹å™¨ç‰ï¼›å¦ä¸€ç§ç§°ä½œä¸ºå®½å¸¦å˜åŽ‹å™¨ï¼Œå®ƒæ˜¯æŒ‡å·¥ä½œåœ¨ä¸€ä¸ªæ¯”较宽或很宽的频率范围内的å˜åŽ‹å™¨ï¼Œå¦‚阻抗å˜æ¢å™¨å˜åŽ‹å™¨ã€é€šè®¯å˜åŽ‹å™¨ç‰ã€‚高频å˜åŽ‹å™¨çš„主è¦ç”¨é€”是用于两个放大器之间ã€è´Ÿè½½ä¸Žé¦ˆçº¿æˆ–馈线与负载间的阻抗匹é…；与电æºå˜åŽ‹å™¨ç›¸æ¯”，高频å˜åŽ‹å™¨è®¾è®¡è¦å¤æ‚一些；所用的æ料和ç£èŠ¯å“ç§ä¹Ÿæ¯”电æºå˜åŽ‹å™¨æ¥å¾—多。在设计高频å˜åŽ‹å™¨æ—¶ï¼Œä»¥ä¸‹é—®é¢˜å¿…é¡»åŠ ä»¥æ³¨æ„ã€?/span></p>
<p> </p>
<p style="text-align: center;"><span style="font-size: 14px;"> </span><img width="247" height="247" title="EE10高频å˜åŽ‹å™¨ç«‹å¼? alt="EE10高频å˜åŽ‹å™¨ç«‹å¼? src="http://www.chenfeipower.com/UploadFiles/Product/20120630161318_19225.jpg" /></p>
<p> </p>
<p><span style="font-size: 14px;">当起绕开始和结æŸå‡ºå…¥çº¿åœ¨BOBBINåŒä¸€ä¾§æ—¶ã€‚原则上以一线一凹槽方å¼å‡ºçº¿ã€‚出入线於使用BOBBIN之凹槽出线时。若åŒä¸€PIN有多组å¯ä½¿ç”¨åŒä¸€å‡¹æ§½æˆ–相邻的凹槽出线，唯在焊锡åŠè£…套管时è¦æ³¨æ„防æ¢çŸè·¯ã€‚除工程图é¢ä¸Šæœ‰ç‰¹åˆ«è§„定绕法时。绕线时需å‡åŒ€æ•´é½ç»•æ»¡BOBBIN绕线区为原则。则以图é¢ä¸ºå‡†ã€‚å…¶å‡ºå…¥çº¿æ‰€åŠ ä¹‹é“氟龙套管须与BOBBIN凹槽å£é½å¹?或至少达2/3é«?并自BOBBIN凹槽出线以防æ¢å› å¥—ç®¡è¿‡é•¿é€ æˆæ‹‰åŠ›å°†çº¿æ‰¯æ–。但若为LPIN水平方å‘ç¼ çº¿ã€?/span></p>
<p><span style="font-size: 14px;"> </span></p>
<p><span style="font-size: 14px;">高频å˜åŽ‹å™¨ä¸é¡»åŠ 醋酸布作为档墙胶带时。故è¦æ±‚2TS以上之醋酸布é‡å ä¸å¯è¶…越5mm包一圈之醋酸布åªé¡»åŒ…0.9T留缺å£ä»¥åˆ©æ–¼å‡¡ç«‹æ°´è‰¯å¥½çš„渗入底层.醋酸布宽度择用与高频å˜åŽ‹å™¨å®‰è§„è¦æ±‚有关，VED绕法ACT宽度3.2mmåŒ…ä¸¤è¾¹ä¸”é¡»åŠ TUBE.绕法：PINç«?mm/4.8mm/4.4mm/4mm;TOPç«?mm/2.4mm/2.2mm/2mmæ—¶ä¸é¡»TUBE.绕线时铜线ä¸å¯ä¸Šæ¡£å¢™ï¼Œè‹¥æœ‰å¥—管，套管必需伸入档墙3mm以上ã€?/span></p>
<p><span style="font-size: 14px;"> </span></p>
<p><span style="font-size: 14px;">设计高频å˜åŽ‹å™¨å¿…须了解该å˜åŽ‹å™¨çš„所在的工作电路，高频å˜åŽ‹å™¨å·¥ä½œåœ¨æ”¾å¤§ç”µè·¯ä¸ï¼Œæ˜¯æ”¾å¤§å™¨çš„组æˆéƒ¨åˆ†ã€‚在分æžä¸Žè®¾è®¡é«˜é¢‘å˜åŽ‹å™¨æ—¶ï¼Œå¿…须与放大电路相结åˆï¼Œç¡®å®šæœ‰å…³å‚数。例如，å˜åŽ‹å™¨çš„次级å‚数（电压ã€ç”µæµï¼‰ï¼Œåœ¨ç”µæºå˜åŽ‹å™¨ä¸ï¼Œæ˜¯ç›´æŽ¥è§„定次级电压和电æµçš„。而在高频å˜åŽ‹å™¨ä¸ï¼Œåˆ™æ˜¯æŒ‰é˜»æŠ—匹é…原ç†ï¼Œå¹¶æ ¹æ®è´Ÿè½½é˜»æŠ—先确定åŒæ•°æ¯”，å†è®¡ç®—电压和电æµï¼šæˆ–æ ¹æ®è¾“出功率和负载阻抗æ¥è®¡ç®—次级电压和电æµã€?规划å˜åŽ‹å™¨æ—¶ï¼Œåº”当预先晓得电路拓扑ã€ä½œä¸šé¢‘率ã€è¾“入和输出电压ã€è¾“出功率或输出电æµä»¥åŠçŽ¯å¢ƒæ¡ä»¶ã€‚一起还应当晓得所规划的å˜åŽ‹å™¨ç”应多大æŸè€—。总是以满æ„最å状况规划å˜åŽ‹å™¨ï¼Œç¡®ä¿è§„划的å˜åŽ‹å™¨åœ¨è§„则的任何状况下都能满æ„作业ã€?开关电æºä¸åŠŸçŽ‡å˜åŽ‹å™¨çš„首è¦æ„å›¾æ˜¯ä¼ è¾“åŠŸçŽ‡ã€‚å°†ä¸€ä¸ªç”µæºçš„能é‡çž¬æ—¶åœ°ä¼ 输到负载ã€?/span></p>
<p><span style="font-size: 14px;"> </span></p>
<p><span style="font-size: 14px;">在规划开关电æºå¼€å§‹æ—¶ï¼Œä¾æ®è¾“出功率，输出电压和输 出电压调ç†è§„模ã€è¾“入电压ã€çŽ¯å¢ƒæ¡ä»¶ç‰è¦ç´ ，规划者å‡ç»åŽ†æˆ–å‚ç…§åŒç±»æ ·æœºï¼Œç»™å‡ºä¸€ä¸ªèƒ½å¤Ÿåˆ°è¾¾çš„功率，由æ¤å¾—到总æŸè€—值。å†å°†æ€»æŸè€—分é…到å„æŸè€—部件，得到 å˜åŽ‹å™¨çš„ç”应æŸè€—ã€?å˜åŽ‹å™¨æŸè€—使得线圈和ç£èŠ¯æ¸©åº¦è¿›æ¥ï¼Œçº¿åœˆä¸é—´æŽ¥è¿‘ç£èŠ¯è¡¨é¢æ¸©åº¦æœ€é«˜ï¼Œæ¤æœ€å¤?ldquo;çƒé—¨” 约æŸäº†å˜åŽ‹å™¨çš„温å‡ã€‚ä¾æ®å¼ï¼?-15），æ¸?å?Delta;T（℃）ç‰äºŽå˜åŽ‹å™¨çƒé˜»Rth（℃/ W）乘以功率æŸè€—P（W）：</span></p>
<p><span style="font-size: 14px;"> </span></p>
<p><span style="font-size: 14px;">在通常工业产å“ä¸ï¼Œæ°‘用环境温度最高为40℃。高频å˜åŽ‹å™¨å†…部最高温度å—ç£èŠ¯å’Œç»ç¼˜æ料约æŸï¼Œå‡å¦‚选用é“氧体与A或E级ç»ç¼˜ï¼Œå˜åŽ‹å™¨æ¸©å‡é€šå¸¸å®šä¸º40ï½?0℃温å‡ã€‚其内部çƒé—¨æ¸©åº¦ä¸?00℃。å‡å¦‚温å‡è¿‡é«˜ï¼Œåº”当é€?用较大尺度的ç£èŠ¯ã€‚å‡å¦‚需求较å°çš„体积，应当选用åˆé‡‘ç£èŠ¯å’Œé«˜ç»ç¼˜ç‰çº§çš„ç»ç¼˜æ料，较高温å‡ï¼Œä½†ä½¿åŠŸçŽ‡ä¸‹é™ã€‚å˜åŽ‹å™¨æŸè€—分为ç£èŠ¯æŸè€—和线圈æŸè€—，很难 准确估计。ç£èŠ¯æŸè€—包å«ç£æ»žæŸè€—和涡æµæŸè€—。线圈æŸè€—包å«ç›´æµæŸè€—和高频æŸè€—。导致å˜åŽ‹å™¨æ¸©å‡é¦–è¦æ˜¯ç¨³æ€æŸè€—，而ä¸æ˜¯çž¬æ€æŸè€—ã€?/span></p>
<p><span style="font-size: 14px;">以上就是å°ç¼–为大家总结的设计高频å˜åŽ‹å™¨æ—¶è¦æ³¨æ„什么事项的分æžï¼Œä»¥ä¾›å¤§å®¶å‚è€?如果还想了解开高频å˜åŽ‹å™¨çš„ä»·æ ¼ï¼Œå·¥è‰ºç‰å…¶ä»–问题，那就点å‡?a href="http://www.chenfeipower.com/news/"><span style="color: red;">高频å˜åŽ‹å™¨èµ„è®?/span></a>å§ï¼</span></p>
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