...
cip
U va dong di¢n i
la:
tg<p=
U
L
-Uc
JX
L
-Xc)I
=X
L
-Xc
U
R
RI R
XL-XC
<p
= arctg= ,-: : " ;-
R
Ta
c6 k€t
lu~
sau :
- Quan
h~
giila
tri
s6
hi¢u
dl,lDg
cua ...
U = zI
hai).c
Trang
do
U
1=
-
z
gQi
la t6ng
tra
cua nhanh R,
L,
C n6i ti€p.
X =
XL
-
Xc
=
coL
-
~C
gQi
la di¢n
kMng
( 3-1 3)
( 3-1 4)
-
DOng
di~n...
... thuang :
-
Ngolli
trm.
budi trua he
trm
nang 100000
Ix
-
NgoAi
trOi.
trOi
cO
mAy.
mira
dOng
2000
~
3000lx
- Dem trang
rAm
0.25
Ix
- Phong
lAm
vi~c
300 + 500
Ix
-NbAo
150 ...
( 7-1 1)
( 7-1 2)
( 7-1 3)
120
Ta
tha'y
rAng
khi
U = 20DV.
quang
[hOng giam rift
nhi~u
so
veti
khi
lAm
vi~c
vo
di¢n lip
d~nh
miic 220V.
b)
Ap
d\U1g...