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<span>æ–‡ç« å‡ºå¤„ï¼?a href=""><a href="http://cfdz.nsw888.com">深圳市晨飞电å有é™å…¬å?/a></a></span><span>网责任编辑：<a href="http://cfdz.nsw888.com">NSW</a></span><span>作者：<a href="http://cfdz.nsw888.com">NSW</a></span><span>人气ï¼?span
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<p>　　<span style="font-size: 16px">准确的定义，就是工作频率高的电åå˜åŽ‹å™¨ï¼Œä¸€èˆ¬å·¥ä½œé¢‘率高äº?0kHz就是高频ã€?/span></p>
<p> </p>
<p><span style="font-size: 16px">　　高频电åå˜åŽ‹å™¨çš„定义是éžå¸¸æ˜Žç¡®çš„，åªä¸è¿‡è¢«å›½å†…局部专家å‘表的一些è§è§£è¯¯å¯¼äº†ï¼Œä¸‹é¢ä¸ºäº†è¿˜é«˜é¢‘电åå˜åŽ‹å™¨çš„原本é¢ç›®ï¼Œæœ‰å¿…è¦å¼„清å˜åŽ‹å™¨ã€ç”µåå˜åŽ‹å™¨ã€é«˜é¢‘电åå˜åŽ‹å™¨çš„概念，以便消除那些误解?</span></p>
<p> </p>
<p><span style="font-size: 16px">　　首先，弄清什么是å˜åŽ‹å™?以电ç£æ„Ÿåº”原ç†å·¥ä½œçš„å˜åŽ‹å™¨ï¼ŒæŒ‡åœ¨çº¿åœˆåŽŸè¾¹ç»•ç»„åŠ äº¤å˜ç”µåŽ‹ï¼Œå‘生交å˜ç£é€šï¼Œå‰¯è¾¹ç»•ç»„æ„Ÿç”Ÿè¾“å‡ºç”µåŽ‹ï¼Œä»Žè€Œèµ·åˆ°ä¼ è¾“èƒ½é‡ï¼Œå˜æ¢ç”µåŽ‹(或信å?电气ç»ç¼˜éš”离的作用ã€?/span></p>
<p> </p>
<p><span style="font-size: 16px">　　è¦å‘生电ç£æ„Ÿåº”ï¼ŒåŽŸè¾¹ç»•ç»„å¿…éœ€åŠ äº¤å˜ç”µåŽ‹ï¼Œä¸å¯èƒ½æœ‰ç›´æµç”µåŽ‹ä½œå·¥ä½œç”µæºçš„å˜åŽ‹å™¨ã€‚é‚£ç§æŠŠç›´æµç”µåŽ‹ä½œå·¥ä½œç”µæºçš„说法，把直æµå˜äº¤æµçš„逆å˜å™¨ï¼Œæˆ–者å˜é¢‘电æºåŒ…括在å˜åŽ‹å™¨çš„范围内的一ç§è¯¯è§£ã€?/span></p>
<p> </p>
<p><span style="font-size: 16px">　　åªè¦æœ‰ç”µç£æ„Ÿåº”å˜åœ¨ï¼Œå˜åŽ‹å™¨å°±å¯ä»¥å·¥ä½œï¼Œè€Œä¸ä¸€å®šè¦æœ‰ç£èŠ¯ã€‚例如，工作频率为MHz级的电åå˜åŽ‹å™¨ï¼Œå°±æ˜¯ç”±å°åˆ·ç”µè·¯æ¿åˆ¶ä½œçš„空心å˜åŽ‹å™¨ã€‚é‚£ç§æŠŠé«˜é¢‘电åå˜åŽ‹å™¨è¯´æˆæ˜¯ç”¨åœ¨å…·æœ‰å˜é¢‘电路ä¸çš„ç£æ€§å˜åŽ‹å™¨ä»?rdquo;说法，属于既把å˜é¢‘电路包括在å˜åŽ‹å™¨èŒƒå›´å†…，åˆè®¤ä¸ºå˜åŽ‹å™¨ä¸€å®šè¦æœ‰ç£èŠ¯çš„åŒé‡è¯¯è§£ã€?/span></p>
<p> </p>
<p><span style="font-size: 16px">　　å˜åŽ‹å™¨ä¸ç®¡å·¥ä½œé¢‘率高低，都是通过电ç£æ„Ÿåº”æ¥ä¼ 输能é‡çš„ä¼ è¾“èƒ½é‡çš„大å°ï¼Œä¸Žå˜åŽ‹å™¨æ‰€ç”¨çš„资料ã€ç»“æž„ã€å°ºå¯¸å’Œå·¥ä½œé¢‘çŽ‡æœ‰å…³ã€‚å¦‚æžœä¼ è¾“çš„èƒ½é‡ä¸ºå®šå€¼ï¼Œå·¥ä½œé¢‘çŽ‡é«˜ï¼Œä¸€å®šæ—¶é—´å†…ä¼ è¾“èƒ½é‡çš„次数多，æ¯ä¸€æ¬¡ä¼ 输的能é‡å¯ä»¥å°‘，则å˜åŽ‹å™¨ç”¨çš„资料少，结构尺寸å°ã€‚é‚£ç§è®¤ä¸ºå˜åŽ‹å™¨ä¼ 输能é‡æœ‰é™ï¼Œè¦ç”¨é«˜é¢‘æ¥å¢žåŠ ä¼ è¾“èƒ½é‡çš„说法，一ç§æœ¬æœ«å€’置的误解。用脉宽调制(PWMæ–¹å¼æ”¹å˜å˜åŽ‹å™¨ä¼ 输能é‡å’Œç”µåŽ‹å¤§å°ï¼Œåªæ˜¯ä¸€ç§å¤–åŠ æŽ§åˆ¶æ–¹æ³•ï¼Œä¸å•é«˜é¢‘å˜åŽ‹å™¨å¯ä»¥ç”¨ï¼Œä½Žé¢‘å˜åŽ‹å™¨ä¹Ÿå¯ä»¥ç”¨ã€‚é‚£ç§è®¤ä¸ºæœ‰PWM控制åŽï¼Œé«˜é¢‘å˜åŽ‹å™¨å’Œä½Žé¢‘å˜åŽ‹å™¨ä¼ 输能é‡æ–¹å¼æœ‰å·®å¼‚，高频å˜åŽ‹å™¨å’Œä½Žé¢‘å˜åŽ‹å™¨æ”¹å˜ç”µåŽ‹çš„æ–¹å¼æœ‰å·®å¼‚的说法，也是一ç§è¯¯è§£ã€?/span></p>
<p> </p>
<p><span style="font-size: 16px">　　其次，弄清什么是电åå˜åŽ‹å™?电åå˜åŽ‹å™¨æ˜¯ç”µå电路和电å设备ä¸ä½¿ç”¨çš„å˜åŽ‹å™¨ã€‚如果把范围扩大一些，包括所有电å电路和电å设备ä¸ä½¿ç”¨çš„å˜åŽ‹å™¨ã€ç”µæ„Ÿå™¨ã€äº’感器ç‰ç”µç£å…ƒä»¶ã€‚电å并ä¸åªé™äºŽåŠŸçŽ‡ç”µå(国内更通用的术è¯æ˜¯ç”µåŠ›ç”µå)还包括工业电åã€ä¿¡æ¯ç”µåã€æ— 线电å和微电å，电åå˜åŽ‹å™¨è™½ç„¶åŒºåˆ«äºŽç”µåŠ›å˜åŽ‹å™¨ï¼Œä½†æ˜¯å¹¶ä¸åŒºåˆ«äºŽå°„频信å·å˜åŽ‹å™¨ï¼Œä¹Ÿä¸åªé™äºŽ“开关功率å˜æ¢å™¨ç”µè·¯ä¸çš„功率å˜åŽ‹å™?rdquo;功率å˜åŽ‹å™¨åªæ˜¯ç”µåå˜åŽ‹å™¨ä¸çš„一ç§ã€‚如果把电åå˜åŽ‹å™¨åªçœ‹æˆåŠŸçŽ‡å˜åŽ‹å™¨ï¼Œéš¾å…会画地为牢。所以，把电ååªé™äºŽåŠŸçŽ‡ç”µå，把电åå˜åŽ‹å™¨åªé™äºŽåŠŸçŽ‡å˜åŽ‹å™¨çš„说法是一ç§è¯¯è§£ã€?/span></p>
<p> </p>
<p><span style="font-size: 16px">　　å†æ¬¡ï¼Œå¼„清什么是高频电åå˜åŽ‹å™?现在对电åå˜åŽ‹å™¨å·¥ä½œé¢‘率的高ã€ä¸ã€ä½Žåˆ’分有一个通行的说法，å³å·¥ä½œé¢‘çŽ?0Hzæˆ?0Hzå«å·¥é¢‘，或者在以下的å«ä½Žé¢‘;60Hzè‡?0kHzå«ä¸é¢‘，400Hzä¸é¢‘，而ä¸æ˜¯å·¥é¢?20kHz以上å«é«˜é¢‘。为什么é€?0kHz为界é™?å› ä¸ºï¼?0kHz声频上é™ï¼Œè¶…越它就å¬ä¸è§å¯é—»å™ªå£°ã€‚所以，工作频率超越20kHzä»?0kHz起到MHz级ã€GHz级是高频。那ç§æŠŠ“åº”ç”¨é¢‘çŽ‡èŒƒå›´ä»Žå‡ åkHzå‡ å…†kHz电åå˜åŽ‹å™¨çš„æ法，有两个误解：一个是20kHzä¸åŒäºŽå‡ åkHzä¸€ä¸ªæ˜¯å‡ GHzä¸æ˜¯å‡ å…†kHz注：请按规范的è¯å¤´ï¼Œä¸èƒ½è‡ªå·±ä¹±é€?</span></p>
<p> </p>
<p><span style="font-size: 16px">　　高频ä¸è¿˜å¯ä»¥åˆ’分æˆè¾ƒé«˜é¢‘(20kHz50kHzä¸é«˜é¢?50kHz200kHz高频(200kHz1MHz超高é¢?1MHz以上)但都属于高频，并ä¸å› 为适用的功率ä¸åŒï¼Œè€Œå¯¹é«˜é¢‘有ä¸åŒçš„ç†è§£ã€‚é‚£ç§å¯¹ä¸åŒåŠŸçŽ‡ä¸‹ï¼Œé«˜é¢‘有ä¸åŒèŒƒå›´çš„说法，一ç§è¯¯è§£ã€?/span></p>
<p> </p>
<p><span style="font-size: 16px">　　以上就是深圳</span><strong><a href="http://www.chenfeipower.com/Products/gongzidianganDR3W.html"><span style="font-size: 16px">高频å˜åŽ‹å™?/span></a></strong><span style="font-size: 16px">çš„å®šä¹‰ï¼Œå¸Œæœ›ä¼šå¯¹ä½ æœ‰æ‰€å¸®åŠ©ã€?/span></p>
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