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PCDVD¼Æ¦ì¬ì§Þ°Q½×°Ï
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- - µØºÓ¨º¥x¥Õ¦âªºµ§¹q©~µM¹qºÏªi¹L°ª¡H¡I
(https://www.pcdvd.com.tw/showthread.php?t=340911)
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EMI( electro magnetic field interference ) --- ¹qºÏªi³y¦¨ªº¤zÂZ
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Originally posted by pj1bits
EMI( electro magnetic field interference ) --- ¹qºÏªi³y¦¨ªº¤zÂZ EMF( electro magnetic field ) --- ¹qºÏªi ¹q©MºÏ¬O¤¬¥Íªº, ªí¥Ü¦³Åܰʪº¹q³õ, ´N²£¥ÍºÏ³õ, ¦³ÅܰʪººÏ³õ, ´N²£¥Í¹q³õ. ©Ò¥H¹qºÏ³õ´N²£¥Í. n¬O¦b¾A·íªºÀô¹Ò¤¤, ´N·|²£¥Í¦@®¶, ¹qºÏ³õ´N·|¿ç®g( radiation )¥X¥h. ( ©M¶ZÂ÷¤T¦¸¤è¦¨¤Ï¤ñ) ®a¥Î¥æ¬y¹q¥H~60Hz ÅܰÊ, ©Ò¥H·|¦³ºÏ³õ²£¥Í. ¥ô¦ó¹q¾¹»s«~³q¹q«á, ¤£¶È¦b¥æ¬y¹q¶i¤J³¡¤À·|¦³¹qºÏ³õ²£¥Í, ¤º³¡¤¸¥ó¤]¦³¦U¦Û¤£¦Pªº¦@®¶ÀW²v, µo®g¥X¤£¦Pªº¹qºÏªi. °ò©ó¯à¶q¤£·À©w«ß, ¹q¾¹©Ò¯àµo®g¹qºÏªi¤£¤j©ó¿é¶iªº¥\²v. ¥H·LªiÄl¨ÓÁ¿, ¬°ªº¬O¥H¹qºÏªi¦@®¶¹ª«ªº¤ô¤À¤l, §â¹qºÏªiªº¯à¶qÂର¼ö¯à¥hµN¹ª«. ¥HµL½u¹q¸Ü¨ÓÁ¿, ´N¬O§â¸ê®Æ"©ñ"¦b¹qºÏªi¤W, ¹qºÏªi¶Çªº¶V»·, ¦¬µo¶ZÂ÷¶V»·, ©Ò»Ý¥\²v¶V¤j.( ¥\²v°I´î©M¶ZÂ÷¤T¦¸¤è¦¨¤Ï¤ñ). ¥H¤@¯ë¹q¾¹¨ÓÁ¿, ¬°ªº¬O°õ¦æ/pºâµ¥¥\¯à, ¤£¬O¬°¤FµN¹ª«, or ¶Ç¸ê®Æ. ¶V¦hªº¹qºÏªiµo®g, ªí¥Ü¯à¶q´²¥¢¦bªÅ®ð¤¤¶V¦h. ¹qºÏªiµo®g¤]¥i¯à¤Þ°_¦b¹qºÏ³õ¤¤ªº¬Y¨Ç¤¸¥ó¦@®¶( ¦p¦P¹ª«ªº¤ô¤À¤l¦b·LªiÄlªº¹qºÏ³õ¤¤¦@®¶), ¥i¬O³o¨Ç¤¸¥ó¨Ã¤£¨£ªº¬O³]p¬°¦@®¶¤¸¥óªº, ©Ò¥H»~°Ê§@¥i¯àµo¥Í. ÄY«®É, ¥i¾ÉP·l®`. ©Ò¥H EMI ªº¨¾½d( ¦Û±Ï) ©M±±¨î( ±Ï¤H) ¬O»Ýnªº. Ãö©óEMI ¹ï¤HÅ骺¦M®`, ¨ÃµL¤@Ó©w½×. ½Ö¤]¤£ª¾¹D, EMwave ¹ï¤Hªº²ÓM¥Íªøµo¨|¦³µL¼vÅT. ©Ò¥H«HªÌ«í«H, ¥H§Ú¦Ó¨¥, ·Q¨º»ò¦h? -- Á×¶} emi °ªªº. ºÞ¥L¬O§_·|§ï. §Aªº¸ê®Æ¦³»~ field=³õ, ¤£¬Oªi ª½¬y¹q¤]¯à²£¥Í¹q³õ©MºÏ³õ ±µ¤U¥hªº½×z, °Ñ¦Ò»ùÈ?? ·d¤£À´ªº´NÁ×¶}, ˤ£¥¢¬°ª¾ÃѤ£¨¬®ÉªºÀ³Åܤ§¹D ---------------------------------- ®Ú¾Ú¤â¤Wªº" field and wave electromagnetics" 2nd edition by D.K.Cheng, page 1, " a time-varying electric field is accompanied by a magnetic field, and vice versa....... Under certain conditions, time-dependent electromagnetic fields produce waves that radiate from the source. " ¬Ý°_¨Ó, Åܰʪº¹q³õ·|²£¥ÍºÏ³õ. ¤£ª¾ª½¬y¹q¦pc¦ó²£¥ÍÅܰʪº¹q³õ? ½Ð±Ð§Ú. ¹qºÏ³õ·|²£¥Í¹qºÏªi¤]¥i½T©w. ¤£ª¾¨âªÌ±zªº©w¸q¬°¦ó? |
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