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Σ Ik = 0,
Ik , .
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Σ k = Σ Uk,
k , , Uk .
, , , :
Σ P = Σ P ,
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Σ P , Σ P .
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2. (. 1) (. 1) .
.1.
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1 | 2 | 3 | 4 | 5 | |
2 , | 10 | 9 | 8 | 10 | 9 |
R 1 * | R 2 | R 3 | R 2 | R 3 | R 2 |
R 2 * | R 4-1 | R 4-1 | R 4-1 | R 4-2 | R 4-2 |
R 3 * | R 7 | R 7 | R 7 | R 9 | R 9 |
3. 2 . V, , U , U 1 1 2, U 23 2 3. 1, 2 3 I 1, I 2 I 3 . : U = E 2; U = 0,7 E 2; U = 0,5 E 2. .2. .
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U, | U 1, B | U 23, | I 1, | I 2, | I 3, | , | 1, | 2, | , | R , | R | |||||||||||
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4. P P 1, P 2 3 . R 1, R 2, R 3 R R . . 2.
5. I i = f (Ui) R 1, R 2, R 3 .
6. .
P = U . I 1;
P 1 = U 1 . I 1, P 2 = U 23 . I 2, P 3 = U 23 . I 3;
Σ P = P 1 + P 2 + P 3;
R = U / I 1 ;
R 1 = U 1 / I 1; R 2 = U 23 / I 2; R 3 = U 23 / I 3 ;
R = R 1 + R 2 ∙ R 3 /(R 2 + R 3) , ;
: P = Σ P .
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:
- ;
- ;
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- I 1 = f (U 1 ), I 2 = f (U 23 ),
I 3 = f (U 23 ) I 1 = f (U);
- .
1. ?
2. .
3. ?
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5. ?
6. , R 2?
7. , 2 ?
8. R 1 , R 3?
9. , R 1?
10. R 3, R 1?
2