() . , . , . 100 1000 . 0.385 / 100 . , . . 2.26 100 S. , 200 800 .
, C
. 2.26. ()
. , , , . , . 0.5 .
, . - , , , , .
. 2.27.
, . . . 2.27 100 , 400 . AD77XX. , 2.5 , 6.25 . , , . 6.25 , , . , ( 1 128), [ 10 ].
- . , , . . 2.28 () [NegativeTemperatureCoefficient NTC] . , [ 11 ].
, C
. 2.28. 10
|
|
. 2.29. 10
, . , (. 2.29), , .
, .
(. 2.30, . 2.31).
R = RT RT RT 2⋅(1+ 3) − 2 RT RT 1⋅ 3,
RT RT 1+ 3− 2 RT 2
RT 1 1, ;
RT 3 3, ;
RT 2 2, , 2 = ( 1 + 3)/2.
, 10 RT 1 = 32650 0 ; RT 2 = 6532 35 RT 3 = 1752 70 . R =5.17 .
. 2.30. 5.17
. 2.31.
, , . 2.3 +2.0 . (. 2.31). , 10 /, 12- .