1. Ih, , , :
1. .1.
2. Rh+R , .
1
R1=R2=R3, | ||||||
Rh+R, |
1.1. :
) : ( 1).
) 4 ( Rh+R) Ih. .2, .1.
2
.
, | , | , | ||||||||
r1 | r2 | r3 | r | Ih1 | Ih2 | Ih3 | IN | |||
(r0=4 ) | ||||||||||
(r0=4 ) |
1.2. , Ih 3, . 100 , .
.2, .2.
2. Ih, , , :
2.1. :
a) 1 ( );
b) ;
c) () 4 ( Rh+R) Ih.
.2, .3.
2.2.. , Ih 3, . 100 , .
|
|
.2, .4.
3. , .. R1= R2 = R3, 1=2=3.
3.1. Ih (r) .
.3, .
3
1=2=3, |
Rh .
R1= R2 = R3 .4, Ih (r). .4 1=2=3 .
4
R1=R2=R3, | 1=2=3, | |||||
Ih, |
3.2. Ih () R.
R1=R2=R3 .5.
5
R1=R2=R3, |
= 1=2=3 .6, Ih ().
6
1=2=3, | R1=R2=R3, | |||||
Ih, |
4. , . . R1=R2=R3=R, 1=2=3=.
4.1. Ih (R) ( 1).
4 .
R1=R2=R3 .3 1=2=3, Ih, . .7.
7
R1=R2=R3, | 1=2=3, | |||||
Ih, |
4.2. Ih () .
R1=R2=R3 (.5).
1=2=3 .8, Ih ().
8
1=2=3, | R1=R2=R3, | |||||
Ih, |
|
|
:
1. .
2. , .
3. .1-4 .
4. Ih (R) Ih () .3, 4 .
5. ( , ) , .
6. ( ).
1. ( ) , ?
2. ?
3. ?
4. , ? Ѯ ¥?
5. , ?
6. U = 220 , Rh = 1000 . Ih :
) 1 = 2 = 3 = 0 r = r1 = r2 = r3 = 3 , 15 , 30 , 60 .
) r = r1 = r2 = r3 =¥ 1 = 2 = 3 = = 0,03 , 0,2 , 1,0 , 1,5 .
7. U=220 . Ih ro = 4 , r = r1 = r2 = r3 = 30 ,. 1= 2 = 3 =0,2 Rh = 1000 .
8. , . Ih U=220 , r = r1 = r2 = r3 = 20 , 1= 2 = 3 = 0,1 , r = 300 , 100 , 30 , 10 .
. . .