. , , , . .
, . .
, , , , : . , . . . .
. 7.21, . ,
. 7.21.
. , i = 0, i 1 = i 2 (u 0)/ R1 = (0 u ) /R2. = u R2/R1
" , ( ). R1 R2 .
, R = R1.
i 1≠0. R1 R2,
,
. .
, - ( ) R3 (. 7.21, ). ,
i 1, i 2
, R2 R1, = R2/R1 1, R3 ≈ R1.
. 7.22.
(. 7.22), i 1, i 2 i 3, , :
,
i = 0, i 4 = i 1+ i 2+ i 3-
.
, 1 = R4/R1, m 2 = R4/R2 m 3 = R4/R3.
|
|
. 7.23.
. 7.23, . U 1= 0 ,
(7.12)
,
,
R x0 u , .
(. 7.23, ), R2 = 0 (7.12), , .
, . 7.24, .
. 7.24.
.
R1 = R3, R2 = R4,
, .
(), (, ).
. 7.25, , .
. 7.25. ()
()
u = u , i 1 = i C.
,
.
, , . 7.25, , .
, . 7.25, , = uR = i1R. i1 = ic = Rcdu /dt, C = u , = Rcdu /dt.
, , . 7.25, , . .