????R1?R2(R1>R2)???????,??R1??? (? - PowerPoint PPT Presentation

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????R1?R2(R1>R2)???????,??R1??? (?

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Title: Author: hjz Last modified by: User Created Date: 11/14/2005 12:49:09 PM Document presentation format: – PowerPoint PPT presentation

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Title: ????R1?R2(R1>R2)???????,??R1??? (?


1
???? ????
??? ???????
????????? ??
2
????
  • ???????????
  • ???????????
  • ????????
  • ????????????????????
  • ????????????????????
  • ????R1?R2(R1gtR2)???????,??R1???
    (?????????)??R2????

3
????
1.??????????,?????????????,??????????????????????
2.??
UIR
3.????
4
???
  • ????????????????

5
1.??????(?????????)
1).??
A
2).????
3).????
????????? P,????????????,??????????????,??????,???
????,???????.
4).?????
6
??
  • ???????????,????????,??????????? ?

7
2.??????(??????????)
1.??
2.????
3.????
??R0 ?Rx?????,????????R0 ?Rx?????,??????,??????Rx
.
4.?????
8
????
  • ??????

9
??????(?????????)
P?a?,???U?,U?????? P?b?,???Ux,
Ux/U?Rx/(RxRab) RxRabUx/(U?-Ux)
S?2?,???U?,U?????? S?1?,???Ux,
Ux/U?Rx/(Rxr) Rx rUx/(U?-Ux)
S?2?,????P,????UX S?1?,?????r,???????UX ???r???R
X????????????
10
??
  • ???????????,????????,??????????? ?

11
????
  • ??????

12
3.??????(??????????)
Ax
1).??
Ao
2).????
3).????
??Rx ?R0?????,??????????R0 ?Rx???,??????,??????Rx
.
4).?????
13
??????(?????????)
P?a?,???????Ia,U?IaRx P?b?,???????Ib,U?Ib(Rxr)
IaRx Ib(Rxr) Rx rIb/(Ia-Ib)
S???,???????I1,U? I1r S???,???????I2,U?I2(Rxr)
I1r I2(Rxr) Rx r(I1-I2)/ I2
S?1?,???I1, U?I1r S?2?,???I2, U?I2Rx I1r
I2Rx, Rx rI1/I2
S?2?,??????P,????Ix S?1?,?????r,???????Ix
???r???Rx????????????
14
????
  • ??????????

?????????
????????
15
????
  • ??1?????1?????1????1????????R0?????????????????Rx?
    ?????
  • (1)????????
  • (2)????????????????????(??)?(3)??????Rx???????

16
Fangfayi ???
  • (1)??????
  • (2)??
  • ?????S,???????I1
  • ?????S,???????Rx??(??A),????S,???????I2
  • ????Rx R0

17
Fangfaer ???
  • (1)?????12-4-11??.
  • (2)??
  • ?????S,???????I1
  • ?????S,??????????(??A),????S,???????I2
  • ????RxR0.

18
Fangfasan ???
  • (1)???????.
  • (2)??
  • ?????S,???????I1
  • ?????S,???????I2
  • ????RxR0.

19
Fangfasi ???
  • (1)???????
  • (2)??
  • ?????S,???????I1
  • ?????S,???????I2
  • ????RxR0.

20
????
??????????
21
????, ???????????! ????????, ????????,
????????? ??
22
  • ??
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