1. I U I.
2. (t 0 C = f (I), . . 11.2 .11.1) I. 11.2.
3. :
) < t > = < R > =;
) (t i - < t >); (t i -< t >) R i; (t i - < t >) t i ( ) (. . 11.2).
11.1
I, mA | ||||||||||
t, oC | 25,0 | 26,5 | 29,0 | 31,0 | 33,0 | 35,5 | 37,5 | 40,0 | 42,0 | 44,5 |
I, mA | ||||||||||
t, oC | 47,0 | 49,5 | 52,0 | 55,0 | 58,0 | 61,0 | 64,0 | 67,5 | 71,5 | 75,0 |
I, mA | ||||||||||
t, oC | 79,0 | 84,0 | 90,0 | 97,0 | ||||||
I, mA | ||||||||||
t, oC | ||||||||||
I, mA | ||||||||||
t, oC | ||||||||||
I, mA | ||||||||||
t, oC | ||||||||||
I, mA | ||||||||||
t, oC |
11.2
I, mA | U, B | R, | t i | t i - < t > | (t i -< t >) R i | (t i - < t >) t i | |
. | |||||||
4. , , ,
.
5. R0 α, . R 0 = A; ( B = R 0α).
6. R = f (t). , R = f (t).
1. I U I.
2. (t 0 C = f (I)) I. . 1 2 . 11.2.
11.2
I, mA | |||
U, B | |||
R | |||
t, 0 C |
3. R k, t k R n, t n ( ), α R 0 ( t = 00 C). R 0 α .
|
|
4. R = f (t). R 0 α (, , , , φ t, α ).
5. , .. 3 4. ( ) .
1. ? , ?
2. ?
3. ? ?
4. ?
5. ( )?
6. ?
7. ?
8. R 0 α? .
1. .. : . - 7 ., . - .: , 2001.- 542 .
2. .. : . 2- ., . . .: , 1999. 718 .
3. .. . .: ,1988. . 1- 3.
4. . . .. .. . .: , 1988.
1
t a ,n | |||||||
/ | D | a n | 0,90 | 0,95 | 0,98 | ||
- : 0,1 0,05 0,01 . | 150, 350, 500 200, 400, 500 200, 250, 300 1 , 2 , 3 0-155 0-250 0-50 200 30 1000 | 0,5 0,5 1 6, 8, 12 0,1 0,05 4 3 . . 1 . . 1 . ., = 1,2,5 , 0,2, 0,5 | ¥ | 6,31 2,92 2,35 2,13 2,02 1,94 1,89 1,86 1,83 1,65 | 12,7 4,30 3,18 2,76 2,57 2.45 2,36 2,31 2,26 1,96 | 31,82 6,96 4,54 3,75 3,36 3,14 3,00 2,90 2,82 2,34 |
2