. , . - (. 1) , , , , , , , , , , , , , , , , , . .
- (R, RL, R, L), , , , , () , , , - , , . .
- t .
. 1. -
- , , , .
, , , , .
- b1 b2, , , .
, . :
1) , , , , . .;
2) - -, - ;
3) - (), (), (), (), , ();
4) - R-, ; ; ; ;
5) ;
6) , , , , ;
7) R -, R : ) (), R - >> R; ) (), R - << R; ) , R - R, ;
8) R :
) , R << R;
) , R >> R;
) , R R.
.
1. , , U = f(U) f = = nst 400 1000 (. 2, ). , .
, (U = 0) U = U.
2. ( -) , , = U / U = j(f) U = nst.
, . 2, , : ) ; ) ; ) .
. 2. :
|
, , , () .
, Df = f - f , 30% . , .
3. , j , j = y(f).
(. 2, ) , j , j p/4 = 45.
, ( ) . , , , . . . .
:
1.
u = U / U = Um / Um ,
U Um .
, , , R - >> R, U , - .
, R - < R, . u = U / . , ,
u = U / U = u1 * u2 ... un.
2.
i = Im / Im = I / I ,
I - , I - .
3.
p = i * u = / ,
- , ; , .
4. , :
u() = 20lgu; i() = 20lgi; () = 10lg.
u , u(), . 1.
u u () |
1.12 1 |
1.41 3 |
2 6 |
3.16 10 |
5.62 15 |
10.0 20 |
17.8 25 |
31.6 30 |
56.2 35 |
70.8 37 |
100 40 | ||||
u u () |
178 45 |
200 46 |
251 |
316 50 |
562 55 |
1000 60 |
1780 65 |
2000 66 |
3160 70 |
3980 72 |
5620 75 | ||||
u u () |
6310 76 |
7940 78 |
8910 79 |
10000 80 |
100000 100 |
1000000 120 |
10000000 140 |
| |||||||
. 1. , (), u() . 2. , , U < U , ( - ), , .
, :
() = 1 () + 2 () + . . . + n () .
1 . , 140 .
5. , :
)
h = / × 100% ;
)
h = / ( + ) × 100%,
R = 0,5 * I2m * R - , ;
- , ;
- , .
6. , ( ),
= = / = / =, 3 .
, = = 1 * 2 ... n, n - . - , :
= / = ... ;
= / = ... .
1,05 ... 1,41,
f =
f =
t = * R;
t = R; R = R || Ri || Rc;
, , .
7.
( ) . - . , . , .
( 20 16 ) , . 4- % , 15- %.
8. , j = j1 + j2 + ... + jn.
9. , , , . , , .
, , U > 0 U = 0.
, , , .
. 3 : () ().
(, ) , . , , .
( , ), ( ), ( ).
( ) ( ) , .
. 3. ;
- ;
- -
, - , , (. 4).
- - 1, , , ( ) ( ) - - .
1 , 2 ... 3.
, .
, , .
. 4. - ;
-
( - ) 2 R ( Z).
R , n2*R = R
, 1.
R5 , R6, .
, .
( - ) ( ) , i = - bI R = R ( ) = - bU R = Ri, .
, . 4, (. 3, ) , . 4, (. 3, ), . , . 5, .
. 5. -
(f ) , = 1 / (w ) , .
(f ) , R3
= 1 / (w ) ,
, , . , .
, . 6 , , .
-, (. 6, ), , . ,
,
,
. 6. :
- ; - ; -
-, (. 6, ), C3,
w = 2pf
f ...t = 3 ×R3 =
f =
-, , , (. 6, ),
w = 2pf
f = ¸; t =;
3 = + 2 + 2 + 3(1 + 3)
, , , , Df = f f , = j(f) U = nst.
, - , , , .
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