45.
1.
R U J .
, .
, . U .
, . .
. 1 V, A Rx.
.1
, .1, ( 1) , Ux UA:
U =U + U , (1)
J , J x:
J = Jx.
.
(4.1) ,
U x = U U .
U A
U A = J A R A = J R A.
U x = U J R ,
1
(, ):
.
:
R x = R - R A.
( ).
,
Δ R = R R = R ,
.. R , 1, R x .
Rx R , ,
, R , , R x , R A .
, . 1, ( 2) J x :
J = Jx + JV, (2)
:
U = Ux.
.
(4.2) ,
Jx = J JV
.
;
|
|
J , , , 2:
.
, .. ,
,
.
.
( ).
R , , Rx
.
Rx R ,
.
, R , R x , Rx.
. 2.
1 , . 2 3. 4
5, .
6, . 7. 0,5 . . , .
, 8.
mA J 100 250 . R A = 0,15 .
V 0,1 1,2 . R v= 2500 .
.2.
1 (V mA) 8 , .
2 , . 1,, ,
. 1,. R x .