U=f(I)
n=const I=const cos =const 3 :
.1 | I=1.. | U=1.. |
.2 | I=0 | U==1,25.. |
.3 | I=0,5I=0,5.. | U=(0,5)..=1,14.. |
U=f(Z) (.2.1.3.)
I=f(I) n=const; U=1..; cos =const
(. 2.1.4.) :
.1 | I=0 | I=1o.e. |
.2 | I=0,5o.e. | I=1,24o.e. |
.3 | I=1o.e. | I=Fo =1.62 |
4
() U. , , , I, n. , R R, 0 =I/I.
: =4,5 U=220 I=24.3 n=3000 / R=0,35 R=280 0=310 =1,45 | : I=U/R =220/280= 0,78 I=I-I=23,4 0,78=23,5 =U-I×R=220-23,5*0,35=211,8 =×I=211,8*23.5=5 |
, 200 , 750
(I=0)
U=×I(R+R)=1,45×23,5×(0,35+6)=219,9
n=f()
U=const I=const ∑R=const
.1 =0.n=n0 =3116/
.2 ==16; ni=n0-∆ni
Ri=(0; 2,5; 5; 7,5; 10) R
:
∆n1= | I(R+R1) n0 |
U |
R1=0
∆n1= | 23,5× (0,35)×3116 | =116/ |
n1=3116-116=3000/
R2=2,5
∆n2= | 23,5× (0,35+2,5*0,35)×3116 | =408/. |
n2=3116-408=2708 /
R3=5
∆n3= | 23.5× (0,35+5*0,35)× 3116 | =700 /. |
n3=3116-700= 2416 /
R4=7,5
∆n4= | 23,5× (0,35+7,5*0,35)×3116 | =990/. |
n4=3116-990= 2126/
R5=10
∆n5= | 23,5× (0,35+10*0,35)×3116 | =1281/ |
n5=3116-1281= 1835/
. 4.1.
. 4.2. .