电磁兼容基础讲座6.pdf

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37、?A?A?A?A?PCB?%&?%&?%&?%&?u?u?u?u(?(?(?(?=?/5?6-?u.?=?/5?6-?u.?=?/5?6-?u.?=?/5?6-?u.?=?=?=?=?7%&7%&7%&7%&?FG?FG?FG?FG?7777?4?4?4?4b?b?b?b?A?A?A?A?/?/?/?/?B?B?B?B?D?D?D?D?w?w?w?w?-?89?Nr-?89?Nr-?89?Nr-?89?NrSSSS211LgVVLR=+gVnVVRLR+-VL+-?(C)?gVnV?U?U?U?U?x?x?x?x?6-1?6-1?6-1?6-1?1?1?1?1?WX?a7?WX?a7?WX?a

38、7?WX?a7?A?A?A?A?*?*?*?*?d?7uh?7uh?7uh?7uh?7u?b7u?b7u?b7u?b?E%&?E%&?E%&?E%&?Is?7?7?7?7?G?G?G?G?AB-+-VgVs?IsIsIgIg?7uh?b7uh?b7uh?b7uh?b?E?E?E?EA?B=?=?=?=?.?U0?U0?U0?U0?k?E#$?k?E#$?k?E#$?k?E#$?Ig?0?0?0?0?7uh?7uh?7uh?7uh?SSSSV2RgVgVsRsRc1Rc2RL1RL2V0V1+-+-+IgIsIsIg7u7u7u7u?A?A?A?A?,?,?,?,?Vg+-RgRc2RL2RsR

39、c1RL1V1+-V2-+-?A?E89?#$?A?E89?#$?A?E89?#$?A?E89?#$?12121122LLgLcsLcRRVVVVRRRRR=+7uh?57uh?57uh?57uh?5?RsBBBB?RL1=RL2,Rc1=Rc2?DDDD?/?/?/?/?/?/?/?/?aD?aD?aD?aD?!?%&?h?%&?h?%&?h?%&?h?#?#$?#$?#$?#$?7?7?7?7?jkjkjkjk?%?/?/?/?/?(?(?(?(?&?(?)*)*)*)*?!.?!.?!.?!.?/?/?/?/?+?A?A?A?A?,?40mil?40mil)?10mil?0.440.72

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41、67?89:;?./0123/014567?89:;?./0123/014567?89:;?./0123/014567?89:;?A?A?A?A B B B BC.0 C.0 C.0 C.0IEC61000-4D E D E D E D E B B B BF 30 F 30 F 30 F 30GGG GGG GGG GGGD E D E D E D E H H H HIEC61000-4I I I I#J#K L M#N O P Q#J#K L M#N O P Q#J#K L M#N O P Q#J#K L M#N O P Q R R R RS TU V WS TU V WS TU V WS

42、TU V WX:;Y X:;Y X:;Y X:;Y B B B B5Z?W X?C 5Z?W X?C 5Z?W X?C 5Z?W X?C _ _ _ _1.#a 67Z b X c#a 67Z b X c#a 67Z b X c#a 67Z b X cd e f X cYd e f X cYd e f X cYd e f X cY B B B BZ g h i?j k l mZ g h i?j k l mZ g h i?j k l mZ g h i?j k l m B B B B5n W L 5n W L 5n W L 5n W LM o p?q r s j Q l tM o p?q r s

43、j Q l tM o p?q r s j Q l tM o p?q r s j Q l t H H H H2.u#v#X cu#v#X cu#v#X cu#v#X cw S w S w S w S1x s yz x s yz x s yz x s yz B B B B x|l yz x|l yz x|l yz x|l yz H H H H3.?X c?X c?X c?X ce f X c?j k?e f X c?j k?e f X c?j k?e f X c?j k?B B B B5L M?A q?5L M?A q?5L M?A q?5L M?A q?B B B Bh?h?h?h?d X c?

44、d X c?d X c?d X c?B B B B?A?d n X L M?U?A?d n X L M?U?A?d n X L M?U?A?d n X L M?U?#?#?#?#?C?C?C?C?H?H?H?H?!#?$?%&?!#?$?%&?!#?$?%&?!#?$?%&?!#?$?%&?!#?$?%&?!#?$?%&?!#?$?%&?!#?$!#?$!#?$!#?$%350kHz%100MHz%600MHz&()*+&()*+&()*+&()*+1,/-5.,.,.,.,/-1,/-/0 1/0 1/0 1/0 1300J300mJ100mJ2 3 2 3 2 3 2 3?4 5 6?4

45、5 6?4 5 6?4 5 6?7 5 6?7 5 6?7 5 6?7 5 68 7 5 6 8 7 5 6 8 7 5 6 8 7 5 69 9 9 9:;?:;?:;?:;?4 6KV4KV15KV#A?B#A?B#A?B#A?BC D E?F G H IC D E?F G H IC D E?F G H IC D E?F G H IJ J J JK K K KL M (1L M (1L M (1L M (1I J I J I J I J?N$N$N$N$?O?O?O?O?P Q KR P Q KR P Q KR P Q KRC D S T C D S T C D S T C D S T?U

46、 V W X&?U V W X&?U V W X&?U V W X&Y Y Y YO?O?O?O?#Z#Z#Z#Z?()*)?+()*)?+()*)?+()*)?+()*)?+()*)?+()*)?+()*)?+1.?#J 2#K L M 5?#J 2#K L M 5?#J 2#K L M 5?#J 2#K L M 5?u#v#2?u#v#?u#v#2?u#v#?u#v#2?u#v#?u#v#2?u#v#?X c X c X c X c “2X c “2X c “2X c “2X c H H H H2.?u#v#?fi?u#v#?fi?u#v#?fi?u#v#?fit fl?t fl?t fl

47、?t fl?t#t#t#t#?o?o?o?o?”?B B B B?D L M?u#v#?D L M?u#v#?D L M?u#v#?D L M?u#v#H H H H&?d?z Y&?d?z Y&?d?z Y&?d?z Y B B B B?B B B B?#?#?#?#B B B Bd?L M?v#d?L M?v#d?L M?v#d?L M?v#?C?C?C?C?B?B?B?B?L M L M L M L M?151048X5034XX1022X351?(kv)?o?o?o?o?5 6 5 6 5 6 5 67 8 9:;5 67 8 9:;5 67 8 9:;5 67 8 9:;5 6?7

48、8 9:;5 67 8 9:;5 67 8 9:;5 67 8 9:;5 6?3.A B C?D E A B C?D E A B C?D E A B C?D EF GH I F GH I F GH I F GH I?4.J K L?M NJ K L?M NJ K L?M NJ K L?M N?;O P P Q?F GR F GS I;O P P Q?F GR F GS I;O P P Q?F GR F GS I;O P P Q?F GR F GS I T T T T?U V W X F?U V W X F?U V W X F?U V W X FY Z GY Z GY Z GY Z G?V W

49、H X F F G F GH SV W H X F F G F GH SV W H X F F G F GH SV W H X F F G F GH S T T T T?U?-_ F?U?-_ F?U?-_ F?U?-_ FG G G GT T T T A?F G?a?S I F G?b c d 5 6 A?F G?a?S I F G?b c d 5 6 A?F G?a?S I F G?b c d 5 6 A?F G?a?S I F G?b c d 5 6 T T T Te f _ g h i j k l 3m n o !p qe f _ g h i j k l 3m n o !p qe f

50、_ g h i j k l 3m n o !p qe f _ g h i j k l 3m n o !p q?r?s t u F?v w c d x y s z c d xr?s t u F?v w c d x y s z c d xr?s t u F?v w c d x y s z c d xr?s t u F?v w c d x y s z c d xy f y f y f y f T T T T|j l?p q|j l?p q|j l?p q|j l?p q?4.4.J K L?M N?J K L?M N?J K L?M N?J K L?M N?J K L?M N?J K L?M N?J