文档介绍:12!"#$%&'()%*+,-./ -1- 12!"#$%&'()%*+,-./012 "#&'(1234 "#&'0123"435436789:Q;4<=>43?***@AB:&'CDEF 3"GH3IEJ':<=F35K36L,MGH3NJ'KONJ':PQCR3ST UEFVWXY73IZ[:\]F^,_`aAB3IK,!def5g 0h2ijXYRBklmno:`aAB3Ipqrs36)t435u43"******@v: "#wxFn7yz{|}TU~"#&':ycTUC "#56078 "#GH!"uq#3I3!:a$#J%F23SpuqK3I&':yc() ABCz0*)%*+F"#+,_-R./0:31U &K!2./:]X3!I &g3C R4!5qoF)%:3"F789+:;+,CR<!=>oF31K3!:3 ;2?******@"#Z^nGH_ ||||(cossin) j U ZRjXZeZj I j jj ==+==+ & & DEB[EFZ_?B"#CU &_?B31CI &_?B3!CR_?B"#:~DrE3" ,'vCX_?B"#:FDrE3#vCZ_?B"#:G ;r#w;vF|Z|= RX + C φ_?B"#:8>rE31U &(3! I &gH:8IJvFφ=arctan(X/R)C ***@ "#+,******@7"#AB9&@ R`aAB&'EF3"435n7362LMNOPQ:3ORSTj0+,:F R01:(U./EFVWX,-YZpqf:3OR2[,\]:F^__` dYZABe)f'C~g0F"#pqh\inj3"4j35#j36$%kFl2 YZ"#m,:noC&':pq5qrs^Jituv&"#$%:rsCwsFxy: 3!z"#pqGk{)%C\]:|}K~}z"#G_\]:;C\]:()XY oF"#syF!"]0pqG:"#%#8$C^_F&'%&:si'm]0 pq&'():J*C ?+Y2"#Z:,BFE 2222 11 RX YjGjB ZRjXRXRX ?===+=+ +++ [EFGKB,M_?+:3?,'K3+,'C?+:-./Z[_ || j YGjBYe j =+= [EF|Y|Kφ,M_?+:0}K?+>C 12!"#$%&'()%*+,-./ -2- "#:;<=>$%0?***@AB R1Z$+5qoF3Ipq^234emT5:j3"#j3#C62FWX:7F 89~g:3Ipq:PRW;Q354;Q36K<=Fl<DB;01:VA-:3!4 314XY7%&|}4}=>?***@lsC$******@XYABCFDE,bAB:FGH sI[,WJCYCF35u^JK6#Fl36)tL^JK,-36) t435uK3"uVXYls:=>C 1436)t 36)t:NV$%_36LF6\^OP4QRST<=3"r LK,b35C fCR 01=>oFr LKC f:FGAUCH36)tVz4!3WXYZ[\CFL^]_3"C sVzXY\B:<!3WCFL^]_T536LK<=3"r L:^_******@XY`ab BCFc^HD]_LKr L:^_F6^C f:)/******@d:r ******@XY BCFC f:)/efF^]_36K35:X_C7_^gR10XYhifF36)t ^******@d3I23GHC23:lm}nBFo.:XYhinpF3 I:Z[Ln?******@rs10XYhif:pq$%CFRtulm}Vv:wxoF^ /a{:***@******@)t:******@d3IC ***@ 36)t:******@d3I ******@^y36)t:***@d"#_ 2 2 222222 1 () 1 (1) () (1) ()(1)()(1) L f L dx fLf Lf f L fLffLf dxdx rjLjC rjL Z jCrLC rjLC LLC r j CrLCwCrLC RjL ww w ww w w w w www w + + == +?+??≈+ +?+?=+ [EFR dx_***@d3"FL dx_***@d36C z 0L=1/ f LC _D{T|}>XYFX~r L<< L<<1/(C f )FL0[^a_ 222 00 [1()]1() L dxdxdx LL rL ZRjLj ww ww ww =+≈+ ??^ g F @ f < f 0L = 0L /(2π)=1/(2π f LC )CFL dx_;FY[36)tK6#******@f>f 0L CFL dx_;FYCK5#******@f≈f 0LCFL dx=0FYC_0j3"L/(r LC f)F7zC f7r !