, : I 0 U 0 ; R; f 0.
. :
= 24 ;
I 0 = 15 ;
U 0 = 12 ;
R = 600 ;
f 0= 400 .
.
, , , , . .
, .
5.5.1. 1.3, :
, = 180 ,
.
25 :
300 | 13 ÷ 25 | 40 | 200 |
|
|
I 0 ≈ 0.9 ;
)
I 0 = I 0 + I 0 = 15 + 0.9 =
) R 0.2 .
R =
)
R =
U 0 ≈ 0.25 ;
) R 2:
R 2 =
) R 1:
R 1 =
5.5.3. :
) R:
R =
)
)
Si =
3 ÷ 5.
|
|
, Si, , , . Si I R.
Si = 2.18 < 3. I , .5.5.2..
5.5.2. ) I = 5 I 0 = 5 ∙ 0.9 = 4.5 ;
) R 2:
R 2 =
) R 1:
R 1 =
5.5.3. ) R:
R =
)
Si =
Si , R 1 R 2.
|
) (.9,) , .
r = tg
) R 1, R 2, r. R 1 R 2 R, R :
R = R // r =
)
R ~ = R // R =
)
KI =
)
KU = KI
, 1800 , .. ;
)
= │KI KU│= 6.6 ∙ 44.5 = 296;
) ,
R = r // R.
, r >> R,
R ≈ R = 480 .
5.5.5. :
) 1, , << R.
= 0.1 R.
1=
) 2, = 0.1 R:
2 =
) 3, = 0.1 R:
C 3=
5.5.6. .
, :
U = E I (R + R).
(.9,) :
) , (I = 0):
U = = 24 .
, ;
) , (U =0):
|
|
I .. =
.. , I ;
) , . ,
U 0 = 12 ; I 0 = 15 (. .9,).
5.5.7.
U ~ = I ~ R ~.
,
,
I = 0:
U = U 0 + ∆ U ~ = 12 + 4 = 16 B.
. .8.
8
I 0 , | U 0 , | |||||
1 | - | - | - | |||
4 | - | - | ||||
8 | 9 | - | ||||
13 | 14 | |||||
19 | 20 | |||||
25 | 26 | 27 |
, 8 , = 12 . = 24 . f0 = 400 . .9.
9
R, | |
6.