():
____________________
___________________________________
():
___________________________________
: ______________
4-21
: : .
: 1, - 1, 3-01, .
, .
.
, :
(1)
I ...;
Ɛ ..;
R ..;
r ....
..
UR :
(2)
. .., :
(3)
: , ... . .
:
(4)
:
(5)
, , ,
. r.
R , I UR. .
, . Ɛ2 .
R, | I, | UR, | PR, | Ɛ1, | I, | r1, | PRmax1, | |
Ɛ2, | r2, | PRmax2, | ||||||
() . ____ _________________________________ ( )
|
|
_________ _________________
1. UR I.
2. . UR Ɛ1. I I.
3. r1 (3) .
r1 =
4. PR (4) R. .
PR1 =
5. PRmax1 (5). .
PRmax1 =
6. PR R.
7. PRmax2 R=r2. .
...
.....
..........
.....
.....
..
.....
UR=f(I) ., ( ) .
:
.
. .
.. .
...
.....
PR=f (R) , ( ) .
:
..
...., , .