Ngày tải lên :
27/08/2013, 16:50
...
321
81 4425
81 4425
2 38
2 381 2131
1
,
,
,.
R//R
;
)]R//R(R//[RR
E
I
=
+
=
++
=
5 183 788 144
2 381 213
≈=+
,//,)R//R(R//[R
W,.,P;,,
,
,
I
,,
,,
,
I;,I
R
9112569069 081 44
2 581 44
80 90
80 9 081 44
83 788 144
251
251
5129
100
2
8
121
≈==
+
=
=
+
==
+
=
1.31 ... quả:
59
81 83 180
80 8 080
6 180
6 180
20
70
0
2
432
4321
31
0
,,
,,,
,,
,.,
,
R
RRR
)RR//(RR
E
i
IKhi)c
=
++
+
+
=
++
++
=
→=
Khi E=0(Hình 1.54 a,b)
mA
,,iii
,,
,,,
R
RR
RR
RR
I
i
25
81 85 681 831
81 85 680
16 080 80
125
32313
4
21
21
43
0
32
−
=−=+=
−=
++
−
=
+
++
−
=
1.24. ...
Jun,
U
CW;V,UEUU
CCCC
53966
2
088 2
2
4
441365244
=====
.Jun,W
;V,,,UU;Jun,W;,
C
q
U
,qq)CvàCQua(q;,.,UCq
C
CCCC
289 80
4406 481 088 23 589 16 481
6 481 26463 088 2
5
36552
2
2
2
436 5224 44
=
======
=====
W,W;Jun,W;,,,U;V,
C
q
U
,,,qqqq;,,.CUq
CC
0 188 00537011203 280 4403 280
3 280 3216 481 3214403
636
3
3
3
5263555
======
=======+
1.23.
mA
,,,
I;V.,"E
V,.'E;K,
,.,
R;mA
,R
E
'I)a
25
80 80160
10056
10012 580
56160350160
1
80 20
350
20
70
3
12
1
0
=
++
===
=======
...