: , .
: , , , .
, C, L R (. 1), , , . . .
E = E 0 cos W t. (1)
, , :
IR + U = E - L , (2)
U .
U = q/C, :
I = = C ; = C .
(2):
LC + CR + U = E 0 cos W t.
LC b = w02 = , :
+ 2b + w02 U = E 0w02 cos W t, (3)
b ; w0 ( R = 0).
:
U = U 0 cos (W t - y), (4)
:
U 0 = , (5)
tg y = . (6)
, U 0 y . . .
(5) , , . . .,
W = . (7)
U 0 = . (8)
(8) w02 > b2.
. . . . , , .
U 0 W . . 2 1, 2, 3, b1, b2, b3, b3 > b2 > b1.
(5) . 2, U 0 = E 0 , W = 0. , , , , b. , W = w0 b.
. Q , 2p W 0 W R , T:
|
|
Q = 2p .