, , , . , . . .
. 14.4
(. 14.4, 14.6, ),
U = U m cos w t
U m , w .
(. 14.4, ) (14.18)
(14.19)
, R:
(14.20)
(14.21)
. (14.19) (14.20), , (. 14.4, ). UR m I , w. ( ) . ( ) .
, . 14.5, , L, .
(14.18)
UL = ULm cos w t. (14.22)
. 14.5
UL , ,
(14.23)
(14.23) (14.22),
(14.24)
(14.24), :
(14.25)
(14.25) , .
1 = [ UL m / (L w)]sin w t = 1 m cos (w t - p/2), (14.26)
I m =UL m(L w) (14.27)
. (14.26) (14.22), (w t - p/2), w t. , p/2, . 14.5, .
(14.27) , ,
= L w (14.28)
, . UL m : w L, I m.
, R = 0. . , , .
, (. 14.6 ), , , . R . :
|
|
U = UC mcos w t. (14.29)
. ,
(14.30)
. 14.6
(14.29)
(14.31)
(14.32)
. (14.31) (14.29), (w t - p/2), w t. , p/2, (. 14.6, ).
(14.32) , ,
L = L w (14.33)
, . : , I m. (w = 0) , . , = 0, C = 0, . . ¥.
, ( , ). . , .
(14.28) (14.33) , .