.
. , - . , . , () (). - . . , ; .
, . . 2.1.
, R 1 R 2 (R 1 R 2 ), f f .
, U x= = E (R 2 / (R 1 + R 2)) U x≈ ( , U x≈ ), , U x≈ , p n - , , U x≈ ( U x= + U x≈ >0), . p n - (I ). I << I I ≈ I . , (I ) (R ) D UR = I R . , f = D UR = I R , , . . U x.
I U S = D I /D U , . [/]. - . ,
U x = f f = I R = S U R = S R (U x= + U x≈) =
= S R U x= S R U x≈.
U =, U x≈ = S R U x≈.
, , . , 180).
|
|
KU = | U x≈/ U x≈| = S R .
C p1 p2 , . R . , R , , .
: .
. 3.1, - . 3.2.
. , , . . 3.3.
. 3.3
(R 3, R 4), ( 5, 6) ( 2, 3); . 7 8 . R 5 4 - . R 6 .
:
1. +15 15 .
2. :.
) , R = R 3, 2 = 5, = 2; 7 8, R 5 4 . R 6 ;
) , U x 5 . (f) 110 . U max , ;
) R = R 4.
3. - :
) , R = R 3, 2 = 5, = 2; 7 8, R 5 4 . R 6 ;
) - 20 200 . (f ) , K (f ) ≈ 0,7 [max K (f)];
) R = R 4.
4. :
) , R = R 3, 2 = 6, = 2; 7 8, R 5 4 . R 6 ;
) - 20 200 . (f ) , K (f ) ≈ 0,7 [max K (f)].
5. :
) , R = R 3, 2 = 5, = 3; 7 8, R 5 4 ;
|
|
) - 20 200 . (f ) , K (f ) ≈ 0,7 [max K (f)];
) 2, 3.
6. - :
) , R = R 3, 2 = 5, = 3; = = 7, R 5 4 . R 6 ;
) - 20 200 . f , K (f ) ≈ 0,7 [max K (f)];
) = 8.
7. :
) , R = R 3, 2 = 5, = 2; 7 8 . R 5 4. R 6 ;
) - 20 200 . (f ) , K (f ) ≈ 0,7 [max K (f)].
8. :
) , R = R 3, 2 = 5, = 2; 7 8, R 5 4 . R 6 ;
) , U x 5 . 110 . U max , ;
) R 6;
) 20 200 .
:
1. - .
2. .
3. . . 28 ( , , U max f ). , . 3, , (. . 3,; 4,; 5,; 6,; 7,; 8,).
4. .
4