(16)
: , ; , , , ; , ; , , .
.
: : , .
, , . , . , t . : i = i(t), u = u(t), e = e(t). , 1, Um, (. 4.1,6).
, . .
(. 4.1,), . . . ω = α/t .
α = 0 ( 0=0'),
, , ,=-d/dt = 0. α = 90 , , , , = .
NS , :
= sin α == sin ωt. (4.1)
R, , : i = e/R = (Em/R) sin ωt = Im sin ωt.
T (. 4.1,6), () , .
:
f =1/.
(). , , . 50 , 60 . , , 3005000 . .
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, (. 4.1), . . f = n, , -1.
, . . f = 2n, f = , . -1,
f = /60. (4.2)
α = 2π, ω = α/t = 2π/, . .
ω= 2 f. (4.3)
ω . 2π .
, , . , . . I , U , . , , , , , .
, , , (1).
Ɵ= I2Rt, . . I 2 (. 4.3),
i2(t). , ( , i I) I 2 = , . .
I = 1 / = 0,7 Im. (4.4)
, .
I , .
I c = 2 I m/π = 0,637 I m.
(4.1) , t= 0 00' (. . 4.1), e(0) = Em sin 0 = 0. , , (0) = sin (0 ) = sin , () .
, :
= sin α = sin (ωt+ ),
α = (ωt+ ), , .
. .
(. 4.4, ). φ, 1 ( α1 =90) , 2. 1(t) 2(t) α1 α2.
, , , . φ = α1 - α2 = (ωt+ ) (ωt+ ) = , . . . (. 4.4,6) .
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. (. 4.5) α , . e = Em sin α .
a S |
α , ω.
. , , (4.4), , .
(. 4.6), . ( ) , (2).
, .
, , . , . 4.6 1. , , (. 4.7,), (. 4.7, ) 180. 90, (. 4.7, ) .
. .
\ 2 90, m1 = 4 , 2 = 3 ?
(. 4.8, ), Em = Em1 + Em2 = 7 , (. 4.8, ), = 1 Em2 = 1 .
c 90 (. 4.8, ), = = 5 .
: 1) ( ); 2) ; 3) ;
4) ( ).