( 5.1,) . 5.1,. :
j = (1 0,03N), ; 0,17N, .ݖ1;
j = (9 + 0,2N), ; RH = 0,2N, .ݖ2;
= (70 2N), ; 0,25N, .ݖ3;
fMAX = 0,03N, ; tMAX = (60N), C; t = 20 ,
N .
5.1 () ()
:
1) ;
2) R;
3) R j;
4) uBX u;
5) I, KU, KP.
5.2
N=30. :
j = 1,0 0,0330 = 0,1 ; R = 0,1730 = 5,1 ;
j = 9 + 0,230 = 3 ; fMAX = 0,0330 = 0,9 ;
= 70 230 = 10 ; tMAX = 60 30 = 30 C.
1. :
) , , I MAX
I MAX £ [ I MAX ]; (5.1)
) , , U MAX
U MAX £ [ U MAX ]; (5.2)
) , fMAX
fMAX £ [ fMAX ]; (5.3)
) , tMAX
tMAX £ [ tMAX ], (5.4)
[ I MAX ], [ U MAX ], [ fMAX ], [ tMAX ] , .
, , .. - . 5.2, :
5.2 ()
()
5.2, ,
I MAX = / = 10 / 5,1 = 1,96
, , .. - . 5.2, . :
U MAX = = 10 .
. . 5.1 , .
5.1 p-n-p
- | [ I MAX ], | [ U MAX ], | [ fMAX ], | [ tMAX ], C | h21 MIN | I, t=20 | |
20 | |||||||
20 | 1.5 | ||||||
21 | 1.5 | ||||||
21 | |||||||
21 | |||||||
21 | 0.7 | ||||||
25 | 0.2 | ||||||
25 | 0.2 | ||||||
25 | 0.5 | ||||||
26 | 0.2 | ||||||
26 | 0.2 | ||||||
26 | 0.5 | ||||||
40 | |||||||
41 | |||||||
114 | 0.1 | ||||||
115 | 0.1 | ||||||
116 | 0.5 | ||||||
42 | |||||||
42 | |||||||
42 |
|
|
41.
2. R I, . ,
I = IK MAX / h21 MIN. (5.5)
I = 1,96 / 15 = 0,131
h21 MIN 41 ( 5.1).
I , .. , (5.2):
I = (1,5... 2) I. (5.6)
I = 0,2 .
R , . , j, I . 5.3.
5.3
5.3 2 :
j = U + I R, (5.7)
U , 0.5... 1 .
(5.7) R
R = (j U ) / I = (3 1) / 0,2 = 10 .
3. R , j. (.5.1): (+) , R, , , , , () I . , R, , , , - . R , .
5.4 .
5.4
|
|
5.3 2 :
j = I′ R + U , (5.9)
U , , , .
, :
U = j I′ R > 0. (5.10)
,
R < j / I′ (5.11)
. :
(5.12)
I (t=20 C) t =20 C ( 5.1);
2 3 .
(5.12) (5.11):
I′ = 152(30-20)/10 = 30 = 0,03 ;
R < 0,1 / 0,03 = 3,33 .
, (5.7) R = 10 , (5.11) R < 3.33 . 2.2 R = 3.3 .
I R. (5.3):
I = (j U ) / R. (5.13)
I = (3 1) / 3,3 = 0,61 .
4. u u , . , - , . uBX u ( 5.5).
. 1 u 0,1 . , , - . , RH , , uBX, ( 5.5).
. 1 , . 1 ′ . . 1 ′ , u ( 5.5).
. 1 ′ . - , . , ( 5.5).
. 2 ′ I I . , I MAX. u = EK.
. 3 ′. ( 5.5).
5. (5.1) (5.13), 5.5:
KI = IK MAX / I = 1,96 / 0,61 = 3,23; (5.14)
KU = EK / jH = 10 / 3 = 3,33; (5.15)
KP = KI KU = 3,233,33 = 10,77. (5.16)
5.5