20091005Lect16EE429_529

20091005Lect16EE429_529 - . lA 11~iI-i~LI- ..-;'\ ,-,;;...

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Unformatted text preview: . lA 11~iI-i~LI- ..-;'\ ,-,;; ~'1J'; /\ . /';"0 I"'~ ~.. . .. _._.tJ .... _. - L L - .. ~ _ ~ _ ._ L L (!. /_ ll.j' . .1..: . l.....~Jd ~\Ol! ' .- f~ - ~ .......... ~ .---.. _ _ ~ _ i_ ; EE LIZq/5 l 9 f!1u!,~lC\"I 10 J bl U8 Lf>(~~Ae ,~ (a) I.- -H-- < , , / "- / "- / \ I \ r---H---.., I I _ ...1 ...-_ fY 'V '" 'Y ' I \ I \ / " / < ;-H--/ I ry -y -y -" \ I I I L jf .J (b) RGURE 6.39 (a) A simple way of winding a common-mode choke. (b) Parasitic capacitance. i i- - I L ~N~iZ~n~fe~r~ri~te~ ~------~-- 100 MnZn ferrite 100 kHz I I 1 Conducted I . 30 MHz f I I Radiated ~ I . 2000 ~---------- FIGURE 6.40 Frequency response of the relative permeabilities of MnZn and NiZn - ferrites.----~-k--I ) 6f I!;;t '6 ' ,lu I "7t J ""1 ' i . - ~ - - _ . . L ' I ! ' I , . ! !- - r - - i . --I- I , ~- 1 J. gauge wire on (a) MnZn and (b) NiZn cores.- - j Iii I I I I'~--T-r---r-1--1--r--t--r----i-- i---1--1 I j! l'-i--r-+-L---+--~ ~: ;---,.--.:,-.--y--t----L,: I,--t----,!--+ ----.---- ~. -- - - 1 - L --'--J i 1 t I " " ' 'I I I I ,i i ,-,- - -- ------!-I - ,---+ ---.L _ I 1 ..- - - - L .:- --1--i-_-,--.: 1 L..! J ! ; ! I : I ! J ,! i I J 'ii ' i : , ,""- I ',' " )' I - i 1- 1- -, I .: I . 1 ,_. L ,-: 1, ; r ! i' I I : ,I I +3EZA TOROID 5 TURNS tZB GA WIRE ..-t--- 700 Gaa 50a ...-._- <laa U1 l: :r: Jaa W U l.- ___ .. Z , a: zaa W a. l: H i- --- [/7 ' < , ~ r-, r-, / \ ~ ~ II I r-, \ ~ 1/ . /- :-- \ 1\ Mr 2r ...-"j l- 'd 1\ o r( b 5 1 ur,i ~~ L 18 \I~ l/" "'e 1 a z laa la a la I 1 I- . 1--I ._j 1 , la t i j I i U1 1 r: , , I j ! j I. I LJ 1 U . _j z i cr: ,- j o I ! LJ t- - i Q I L '-i ' j ; . . ~ ; , I _ J I la I I I t FREQUENCY (MHZ) (a) +<13 TOROID 5 TURNS taa GA WIRE (\Ii 2 17 ITc r'f lC rJ I) ~ S-T; ~ t> E ; \K V;,e- lJrnlS- V t> I'.. r-, 3 / ' t-, V-, , /-, /-, / '\ 1/-, V V \ t> \ V-, V / / / / i a 1 FREQUENCY (b) (MHZ) FIGURE 6.41 Measured impedance of inductors formed by winding five turns of # 28 ! I- - - - - , - - - , - - r - - - - - _ ._ _ ~ ...1 -_ ...... I---t-----+-- .2-------"-_.- , ! I , I i-".-+--_ _,---- ~.-.- '-- .--~ .... 0_: _--1...-__ .-~---~--.- ~-- r- - ~ - - -- ~ - -i .J --~- i i I L ....
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This note was uploaded on 02/22/2011 for the course EE 529 taught by Professor Dr.j.j.whalen during the Fall '10 term at SUNY Buffalo.

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20091005Lect16EE429_529 - . lA 11~iI-i~LI- ..-;'\ ,-,;;...

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