Title: ????R1?R2(R1>R2)???????,??R1??? (?
1???? ????
??? ???????
????????? ??
2????
- ???????????
- ???????????
- ????????
- ????????????????????
- ????????????????????
- ????R1?R2(R1gtR2)???????,??R1???
(?????????)??R2????
3????
1.??????????,?????????????,??????????????????????
2.??
UIR
3.????
4???
51.??????(?????????)
1).??
A
2).????
3).????
????????? P,????????????,??????????????,??????,???
????,???????.
4).?????
6??
- ???????????,????????,??????????? ?
72.??????(??????????)
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????
123.??????(??????????)
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???????
16Fangfayi ???
- (1)??????
- (2)??
- ?????S,???????I1
- ?????S,???????Rx??(??A),????S,???????I2
- ????Rx R0
-
17Fangfaer ???
- (1)?????12-4-11??.
- (2)??
- ?????S,???????I1
- ?????S,??????????(??A),????S,???????I2
- ????RxR0.
18Fangfasan ???
- (1)???????.
- (2)??
- ?????S,???????I1
- ?????S,???????I2
- ????RxR0.
19Fangfasi ???
- (1)???????
- (2)??
- ?????S,???????I1
- ?????S,???????I2
- ????RxR0.
20????
??????????
21????, ???????????! ????????, ????????,
????????? ??
22